Question about Disney DTD1363-CAR 13" TV/DVD

20 Answers

DTD1363-CAR The tv is turned on, stays on for about 5 seconds and then turns off. The unit worked for months,but now shuts off intermittently. I'm a retired electronic repairman and should be able to fix this for my Grandson. I found a schematic online,but was hoping that someone else had the problem figured out. John, excitedinjun@dejazzd.com

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  • 39 pontiac Jan 10, 2008

    No bad solder joint found thus far. It seems that the tv set stays on for a longer period of time with the cabinet removed. Could it be a heat sensitive component?

  • 39 pontiac Jan 10, 2008

    Has anyone else out there had this problem on this set or a similar chassis. I appreciate the first gentlemans response and looking for more options. Thank you, John

  • 39 pontiac Jan 10, 2008

    Thank you yonatanh. I will call the 800# on the tv,but I doubt that they will provide any info other than what I had heard before and that was send it to an address(that I no longer have) and for $85 they'll send me another.

  • 39 pontiac Jan 10, 2008

    Still looking for a solution if anyone else can help. John excitedinjun@dejazzd.com

  • 39 pontiac Jan 11, 2008

    Thanks for your input, Darklord. As I had previously stated,I am a retired electronics technician with about 45 yrs. experience,but without a schematic it's really tough to troubleshoot.I would love to get a schematic,but haven't found any yet.Any Ideas? John excitedinjun@dejazzd.com

  • 39 pontiac Jan 11, 2008

    Can anyone lead me to a schematic and block diagram of my circuit? John excitedinjun@dejazzd.com

  • 39 pontiac Jan 11, 2008

    Thanks Nitrotrike,I'm gonna check it out. John excitedinjun@dejazzd.com

  • 39 pontiac Jan 11, 2008

    Still trying to get info. to fix my problem. John excitedinjun@dejazzd.com

  • 39 pontiac Jan 11, 2008

    Thanks Maklean for your analysis. I'm trying to use the schematic that Nitrotrike found for me and i'll check out those components. I measured 88vdc at what seemed to be a power supply point and that didn't change when the tv shut off. John excitedinjun@dejazzd.com

  • 39 pontiac Jan 11, 2008

    Any other ideas are sure welcomed as I check what's already been suggested. John excitedinjun@dejazzd.com

  • 39 pontiac Jan 11, 2008

    Thanks Ron & Rascal for your input. Last nite it ran for about an hour, out of cabinet. I thought I might be getting somewhere. Tried adding heat from a heat gun(gently of course) and it remained on. Pushed around on the board & now i'm back to the only staying on for about 5 seconds. Guess i'm going to remove the board & check the solder joints,etc & go from there with the other suggestions. when I finally do locate the problem,I'll post what i found for sure. Note the optimism! My Grandson is 4 yrs. old & says I can fix anything. Don't want to let him down! John excitedinjun@dejazzd.com

  • 39 pontiac Jan 11, 2008

    Still lookin'. All replies will help. Thanks, John excitedinjun@dejazzd.com

  • 39 pontiac Jan 12, 2008

    Just finished checking land side of board for a bad solder joint and found none. After tv is off for a couple of hours it'll stay on for 5 or 10 minutes. Sometimes longer,but eventually goes off & then after turning on again it don't stay on long enough to get a picture or sound. when it shuts off everything goes. Does sound like the power control circuit,don't it?

  • 39 pontiac Jan 12, 2008

    What???? And give in to a tuff problem? No,I'll find the problem eventually and then maybe other sets like this will get repaired and not added to the landfill. These companies make & sell us JUNK,& then don't stand behind it,& expect that we'll buy another.WRONG!!!! John excitedinjun@dejazzd.com

  • 39 pontiac Jan 12, 2008

    Still looking! John excitedinjun@dejazzd.com

  • 39 pontiac Jan 13, 2008

    Just bought freeze spray today. Going to see if that'll find the bad component(s). Thanks for all the input thus far. John excitedinjun@dejazzd.com

  • 39 pontiac Jan 13, 2008

    Still trying. John excitedinjun@dejazzd.com

  • 39 pontiac Jan 13, 2008

    Still trying. John excitedinjun@dejazzd.com

  • 39 pontiac Jan 14, 2008

    Taking it out of cabinet was the first thing i did,of course.When I left it sit for a day or more & then turned it on, it ran for 17 minutes before going off again. Hitting various components with freeze spray didn't bring it back on. Then trying to turn it on again,it wouldn't come on at all. It sure would be nice to get a set of Sams info. on this to be able to check voltage points,etc. John excitedinjun@dejazzd.com

  • 39 pontiac Jan 14, 2008

    Still persuing a problem that seems to have eluded even you experts.

  • 39 pontiac Jan 14, 2008

    Thank you,Cammykins,for your response. You're right, that now it doesn't seem to be a heat related failure,since i did the Freeze spray thing. Did you see my post that it stayed on for 17 mins after being off for a day yesterday? After that, when pushing the on button,it tries for a second or so & then just goes off. Cord,fuse,& all the obvious are ok.It seems that when plugged in it's in a standby mode,& energizes to operate with the on button. Without having a known schematic,it's hard to find voltage measurement points,and physically challenging to get to areas with all cables plugged in.(can only move pc board a little). John excitedinjun@dejazzd.com

  • 39 pontiac Jan 14, 2008

    The Saga goes on. Still hunting the problem.

  • 39 pontiac Jan 15, 2008

    Techman,do you have a schematic for my unit or any usefull info. on finding which filter capacitor that I should change? I believe you are referring to the larger 470uf can. Thanks John excitedinjun@dejazzd.com

  • 39 pontiac Jan 15, 2008

    The strange part is that after it sits for a long time it'll run for 15 mins. or more,& then won't work at all.(just shuts down right after pushing the on button). I'm using a schematic that I'm not sure is the one I need,but it's better than none. Nitrotrike gave me a link to the schematic at www.eserviceinfo.com/download/16272/kitty%20toys_kt2313.html That's what i'm trying to use. John excitedinjun@dejazzd.com

  • 39 pontiac Jan 15, 2008

    Still working on it.

  • 39 pontiac Jan 18, 2008

    Well,after a lot of searching, I located a service manual. Called Fox International,they gave me phone#of Memorex. From a link provided by Memorex, I was able to download the manual. What would really help would be a troubleshooting flowchart,but the manual doesn't have one. John excitedinjun@dejazzd.com

  • 39 pontiac Jan 18, 2008

    Now I have a service manual,That's a start,but i don't know the operation sequence. Like what should happen, voltage wise, from the push of the "on" button

  • 39 pontiac Jan 18, 2008

    Now going to see what & if all standby voltages are there and then try and trace what happens with the "on" sequence. Something obviously doesn't see the proper signal to continue the start up and if that's missing,it goes into a shutdown mode. Any hints appreciated,as always. John excitedinjun@dejazzd.com

  • 39 pontiac Jan 18, 2008

    See my last post.

  • 39 pontiac Jan 19, 2008

    Thanks for your response Siju. I'll try that.

  • 39 pontiac Jan 19, 2008

    Still looking for problem.

  • 39 pontiac Jan 21, 2008

    Thanx DJNICK....Keep spinnin those platters.

  • 39 pontiac Jan 21, 2008

    Any other ideas?

  • 39 pontiac Jan 22, 2008

    Hello Soulvisitor, I contacted an outfit called Fox International 1-800-321-6993(listed on back of operating manual)& they referred me to Memorex electronics(Ana Kitchen)whom supplied me with a link to download the CARS COMBO SERVICE MANUAL(pdf)from Imation Electronics Products. Imations phone # is 954-660-7034. Now i at least know that I have the right service manual. Finding the problem still isn't going to be easy and if it's one of those complex ic's,might as well trash the set, because it takes a very specialized desoldering machine to remove them.

  • 39 pontiac Jan 22, 2008

    The saga continues.

  • 39 pontiac Feb 18, 2008

    To hasten the repair, what i finally did was buy another working tv from ebay and swap the circuit board,so that my Grandson can enjoy his tv again. I'll attempt repair later.

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20 Answers

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  • 3,422 Answers

HI,

Many experts have given you the best solution to fix your problem and none worked my suggestion is to please contact the main support number and tell them the same problem and get it fixed.
Main support number: 800-228-0988


Goodluck..

Posted on Feb 18, 2008

  • Priya darshan Feb 18, 2008

    As you wish pontiac i have given you my best solution and you can give me any ratings which you feel i deserve..



    Hope your problem gets solved soon..



    Goodluck once again..

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  • 790 Answers

Hi
I Think the problem is the power Oscillation Circuit. maybe you have abnormal parts like change value Resistors and or capacitors at the oscillation section beside of the Jungle IC... for the value of resistors is for about 20k to 50k or the 1meg near the flyback go to Jungle IC.. for the capacitors, all small capacitors related in oscillation circuit. for me if im the technician for your TV I test that in the ohmmeter in one by one in oscillation section for the small parts. i think thats is small parts Change Value!!!

Posted on Jan 22, 2008

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Quite a read,

Now is I wonder ... Hello Kitty, Sponge bob, Speedy (car?) and his mates are all from the same family then the OEM is Emerson Radio Corp

Do you think that this is the same machine notice Emerson Radio Corp listed as manufacturer

I thought I might include some further points of possible interest I waded in

This wont help the repair but it is a example of many others with same the "issue

please also note from this toshiba 13" tv.dvd combo post....extract.... We purchased the television less than nine months ago and now it will not power on. When I push the power button, the light comes on faintly and then powers itself off. I did a little online research and found a large number of consumers having the exact same problem (see amazon reviews). One man bought ten units and all ten had this problem. Another individual was informed by his repair shop that they had 17 sets they were fixing with the same problem. Called Toshiba and they deny any knowledge of this problem. The problem seems to stem from the power circuit which shuts itself off if one of the components is pulling too much power (is this a fire hazard?) The replacement warranty only lasts for three months and the repair will be in excess of $100. Some who have spent the money on a repair report a recurrence of the power problem after a few months. If you don't mind paying $175 for something that will need replaced in a year or if you are a television repairman, this is the TV for you. ....

........Applicable possible, a bit of wide shot wondering if Toshiba was also using same engine, just sounded like the fault to me

http://www.epinions.com/pr-Toshiba_MD13P1_Combo/display_~reviews

Here the Bratz?

and Emerson sponge Bob

Emerson EWC13D4 13 Inch Silver Tv/DVD Co?

new speedy's

other shutdown speedys and a 80 buck speedy

well thats my 2cent, I wish you well, it has become quite a story

Cheers
S.

Posted on Jan 21, 2008

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  • Soulvisitor
    Soulvisitor Jan 21, 2008

    And toshiba fix on fixya "leave tape in but not playing"



    link to post



    Toshiba 13" combo same faults


  • Soulvisitor
    Soulvisitor Jan 21, 2008

    last post retraction must be getting speedy out, I swapped the dvd for a VCR excuse ;)

  • Soulvisitor
    Soulvisitor Jan 21, 2008

    John I'm emailing you the toshiba 13" combo service manual so you can compare with your manual to see if same engine (or chassis in tv tec land)



    Cheers





    Toshiba same fault

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Hello all. A bemusing problem. A couple of years ago I had a similar mystery. I banged my head on the wall for a month until a friend asked me to check the switching transformers. He turned out to be right.

I don't mean the main chopper transformer either. I mean the small HF transformer that is often used to drive the line-output transistor and horizontal circuits, especially in older sets. These can vibrate imperceptibly at high-frequencies and can get quite warm (core losses at about 70% efficiency). Added to that, the windings are built up using very fine wire and are brought out to the thicker tin leads. All these are the ingredients for a succulent mystery.

A test: with the power switch ON (wheter in fault condition or not), check for pulses at the pins of this transformer on the solder side of the board. Use an AC multimeter with respect to secondary-side ground. If it displays an RMS greater than 0.5V in the fault condition then the transformer is faulty. Remove the transformer and use an ohmeter to check it's resistance. Chances are there is an intermittent open circuit somewhere within this transformer. The solution is to replace it or if possible to strip it and rebuild it.

Posted on Jan 21, 2008

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Best bet buy a used one with anther issue off ebay 10 bucks use part u need from new used one on yours these tvs are so hard to get parts or come by they only made so many then now new one with dora lol way it is with disney stuff hard to get parts on all ther stuff

Posted on Jan 19, 2008

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  • 70 Answers

  1. i think the problem is related to the thermistor placed series to the line input supply, it not functioning properly, not become low resistance
  2. measure voltage accross it, it may very low otherwise replace it
  3. check dry solder and resolder it
  4. clean pcb by using cleaning liquid or use thinner solution

Posted on Jan 18, 2008

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Let other electronic repairman maybe they have some point of view regarding your problems may this help you. Its hard to troubleshoot when its not visible we keep on guessing. Maybe sometimes guessing more powerful in which you can see the future. Thank you Daddy have a nice day.

Posted on Jan 18, 2008

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  • 395 Answers

Wow you have found the dog of the century. I think that the problem may be micro related, try resolding all the pins on the micro pack (64 pins) they may look good but there may be microscopic solder fractures (I've seen this on JVC DVDs). be careful not to bridge the leads they are small. I've found that if you use rosin paste along the leads will help the solder not to bridge when resoldering. also check components in relation to heat sinks there may be shorting. you can also issolate if the DVD is at fault by removing it and starting the set. I don't beleive this set has fault checking between the set and the DVD like that of VCRs did. you said that the set ran longer outside of the cabinet check for flexed board nearest the button assembly. last thing I'd check is G2 might be too high or low. it may have a touchy tolerance. this is the best I can offer for now.

Posted on Jan 16, 2008

  • Robert Johnson Jan 22, 2008

    Hi John, thought I'd weigh in again. I looked at the hello kitty schematic if it is like yours I have a few checks you may look at.

    1 check voltage across C903 for 110 volts if low adjust VR901 until 110 Volts is achieved.

    2 check C201 off of pin 10 of IC201 1uf 50v cap for leak this is the protect (low). if I had a dime for every on of these caps that go bad I'd be rich.

    3 check ZD901 for 5.1v at cathode

    4 lastly solder on the pack. like I said before. electronics today do not use leaded solder. it is lead free which is comprized of silver, copper, and tin alloy. it requires 800F for melting and a more acidic rosin for adhesion. during mass manufactoring there are more microscopic solder failures. most especaily the SMT componets. so I would not rule this out.if you send me the schematic you have for this set I'll look it over or at least the link to treborj37@hotmail.com

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The problem with this unit is the power relay voltage source from the standby power supply. The filter capacitor goes bad all the time in these units. I have replace several and have fixed this problem.

Posted on Jan 14, 2008

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  • Larry  Dillon
    Larry Dillon Jan 15, 2008

    I am trying to find that, but I cannot seem to find it. It has been a while since I have used it. The larger cap is NOT usually the problem. I have my notes and I have also found a bad regulator circuit in these type of set causing intermittant shutdown.

  • Larry  Dillon
    Larry Dillon Jan 19, 2008

    What link did you use to get the service manual? I would like to see the schematic of this puppy.

  • Larry  Dillon
    Larry Dillon Jan 21, 2008

    I would like to see the manual man then maybe we can help you?

  • Larry  Dillon
    Larry Dillon Feb 19, 2008

    Very smart thing to do. If all else fails, you at least made someone important in your life a happy camper.

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  • 149 Answers

Well, I happen to work for an electronic company and also a manufacturer where they worked on digital display products. This unit doesnt need the cooling as the digital displays do which makes me convinced that its not the "over-heating"

I know various people on here have given you plenty of options and ideas on "what it might be" or trying to push the buck to good old B&M chain Best Buy..which they arent any better then you looking into it since you have the experience and its going to save you the money to resolve it vs. bringing it to someone else.

I happened to search around as much as possible on this model number. The most interesting thing I've stumbled across is that there isn't much that pulls up with a Google search or even the image search. Hence, it is an older model which is 1-2 yrs now.

However, the same OEM manufacturer also produced the "little Disney princess" set, Sponge Bob Square pants set, Disney "Big ears" set, and all of those other fancy design combo units.

ALL of those models have surfaced with the same issue or the DVD player just stopped working. Have you tried hooking anything else up to this unit beside just the DVD player? Do you still receive the same response? My guess is that it has something to do w/the power vs. the sources if thats the case. I might suggest to investigate further into the power cord since those can go awry in plenty of sets these days or have you even thought to replace the fuse?

I'm also finding it utterly difficult to find a schematic draw up of this unit since I'm sure Disney didnt quit grasp this unit to be in such demand for that information. There MUST be an OEM whom produced the original set for Disney and Chassis. If that is the case, then if we just sought out the OEM of the set itself we might get a bit further. One of my favorite spots is avsforum which I'm not sure the likely hood of someone knowing this answer would be high but I will check for you.

Stay tuned...I also look for your response and I will be checking back with you on this. I have two little boys both 2yrs and 4yrs and can understand your frustration since our 11" set which isnt any fancy combo decor'd tv set..but its going out on us right now which it has been saving me and sparing my sanity..lol.

Posted on Jan 14, 2008

  • Cambryn Reichert
    Cambryn Reichert Mar 31, 2008

    I just wanted to follow up with you on this to see if you were able to make any further progress? I just had something similar happen to a 11" sony CRt I had in the kids bedroom for their viewing pleasure..and our sanity from time to time lol.



    Any luck yet?

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Just try taking it out of the cabinet. if it still doesnt work, take it to best buy and see if they can repair it. It may cost less too just buy a new one though... :)

Posted on Jan 13, 2008

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Another trick used by techs is to spot heat areas and watch for changes. If you do not have a heat gun with a funnel nozzle, try a hair blow dryer but narrowing problem to one component will be more difficult. Alternatively, using a cold spray (store-bought can) may also pinpoint the source.

Posted on Jan 12, 2008

  • Marty marty Jan 14, 2008

    OK,
    Since you " found a schematic online,but was hoping that someone else had..." then forward the same online site to me and I will diagnose it further.

  • Marty marty Jan 14, 2008

    Hi,
    In your initial post, you stated "I found a schematic online...", but last post said "Without having a known schematic...." so do you have a schematic but now lost it?

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I think its the time for you to get a new one...:)

Posted on Jan 12, 2008

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  • 324 Answers

Good day, John!
Being both a retired electronic tech and a grandfather, I certainly agree that it is important for granpa's to come through for their grandkids! ;o)
So, let's take a look at what we have to work with and see what we can do with it. I haven't researched it so will assume (for the time being, at least) that the schematic that Nitrotrike provided is the correct one for your unit.
One of the things that you mentioned was that the unit goes off after a short time. Question-When it goes off, does everything go off? (Video, sound, everything)
Have you ever tried to have this hooked up to a vcr when this happens. Just to see if anything is coming out of the output jacks? There probably won't be, but won't hurt to check. That kind of information might help to narrow this down a bit.
It was mentioned that it seems to be heat related. That is sure a possibility. Have you tried to use something pressurized like spray air, or spray circuit cleaner to cool down various components in an effort to pinpoint the failing component? Just spray the chosen component till you start to see some frost, let it set for 15 seconds or so, and see if it starts working again. I'd start with the ICs and any transistors.
It was also mentioned that you could be dealing with a failed solder joint. That, too, may cause something like this problem you are having. A good light, magnifying glass (yes, I have to use those now) and a little time may allow you to spot that. If I find any that are at all in question, I retouch them with solder just to be sure.

Ron

Posted on Jan 11, 2008

  • Ron Roske Jan 12, 2008

    Good evening, John
    From the additional information that you've provided, I'd say that you do have a thermal problem. Whether this is due to a defective component or a bad solder joint/cracked land pattern is yet to be determined. And, I'd agree that it does sound like something in the power area. If all else fails, I'd suggest following all of the land patterns in the power area with a soldering iron and touching each component connection in the power area with the iron. That may, or may not, resolve the problem. Even if it doesn't, you would have eliminated that possibility from the equation.
    Throughout my career, I have used these methods to resolve several issues that were not visible during eyeball inspections.
    Ron-

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I dont know how far i am right. just throwing my insights.

you said it is running wiht cabinet opened right. so may be the air filter is bad. filled with dust? this is allowing the heated air to remain inside.

else try attaching a fan inside it. so that you can push the hot air outside by force.

just try it if it helps.

and one more. since this is a heat issue for sure, see if any comp is getting heated abnormally, by touching the component by your hand when the set is in operation. since you are an experienced person these words may sound kiddish.
am just saying my opinion over the issue.

sorry if am going out of the track very much.

Posted on Jan 11, 2008

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It seems RL901 (SDT-S-112LMR) to be involved in the problem.
This is a "Microcontroller Analog IC ADC Semiconductor Discrete Transistor Optoelectronics Switch Relay".
I would check first its condition and also Q 2SC1815 C-931, TH901, R-933, c-410 (470 uf 25V) ,D407 ,R411,because they are straight connected at its input-output.
Manufacturer list for RL901 found at http://dev.emcelettronica.com/datasheet?gclid=CNn39pKl7ZACFR9paAod5EgH0g

Posted on Jan 11, 2008

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  • Kleanthis Mavropoulos
    Kleanthis Mavropoulos Jan 11, 2008

    With reference the given scematic, since there are not voltage test points, i think a very carefull repeated inspection for cold solders or any cracks is needed.

    As you said if TV turns off in about 5 secs so there is not enough time to do measurements at the input output of T901.

    The components around it must be checked individually.

    Alternatively disconnect resoldering pins 1 to 7 (output of T901) and see if the circuit operates and expectable voltages are applied at pins 8 -10, 11-12, 13-14 (input of T901).

    I think this can help you figure out on which section (before or after T901) of the circuit caused the problem.

  • Kleanthis Mavropoulos
    Kleanthis Mavropoulos Jan 17, 2008

    alternative solution , think it needs to be worked from the begining by a different person.
    I propose when you have been tired to try it post it to my address (or select someone preffered) in order to make an effort. if it works your own expenses. if it does not work my own (or x? selected) expenses of it's return.
    think..

  • Kleanthis Mavropoulos
    Kleanthis Mavropoulos Jan 17, 2008
  • Kleanthis Mavropoulos
    Kleanthis Mavropoulos Jan 21, 2008

    I agree with Megatronix but i believe that because of the difficulty to find spare parts, it is better to find another or more not working same model chassis to remove-replace suspicious parts and compare results.

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This looks like it "may" be a similar chassis.

http://www.spectraintl.com/xsp/KT2313.html


I'll keep poking around for a schematic for you.

Posted on Jan 11, 2008

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Its a problem with the power controll circuit. You can get the ic changed but it just gord after a while... If want you can take it to a local technician and have them check the power controll circuit, then have change the rctifer diodes to larger ones and a bigger capicator which will inturn prevent this problem from happening again , as yothana said its a common problem, with this model, and it stems from the power comntroll circuit.. the rest is up to you.. you can eighter buy a new one or get it repaired or modified

Posted on Jan 10, 2008

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  • Rishi Roshan Ali Jan 11, 2008

    Its going to be preety hard to find a schemetic, if at all , i tried but came up short.. Maybe there isnt one online or no one bothered yet to put one up, I'd suggest you go the old fashicon way and run through contuinity... YEP ITS A LONG PROCESS but i will work..


  • Rishi Roshan Ali Jan 14, 2008

    I looked at some other fourms on the net.. as well as a few calls,, It recommened that you change the entire main board since they assue the problem is one if the IC's (i aint sure which but i am assuming its the main controll ic) any way Why dont you look at the Ic Circuits, you can google the ic number to get the ic diagrams and pin formats.. even the voltage and output sequence. this could help you since then device is based on logical circuits it will be easy to pinpoint the exact problem as interaction between the IC's and components requie precise voltages..

    GOOGLE THE IC NUMBER FOR SPECIFICS ON THE IC's DIAGRAMS , VOLTAGE COUNTS, PULSE COUNTS AND PIN FORMATS

  • Rishi Roshan Ali Jan 14, 2008

    Why dont you give my suggestions about the ic's a shot ?

  • Rishi Roshan Ali Jan 18, 2008

    Basically what i do, since i nevre know the voltage unless the parts are labeled like 120-10v20amp then i know what t look for,, but basically all you need is to do contuinity checks ane make sure what is supposed to get power is getting it... Ih it has a transformer it should be labeled like 12 so look for in and around 12..

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It seems like this is a common issue with this model. I don't know what's wrong with it but thought I'd ask you if you called Disney about it. Since it's a common issue, they might know what's wrong and be able to give you more information.

Please rate this post as thanks for trying (or any other rating you deem appropriate) so your question pops back up on the main page for other experts to see (once I answer your question, it's removed from the main page until you rate it).

Posted on Jan 10, 2008

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Hi i had this problem but with different make of telly and as the telly comes on for short while then switches off i found out that the problem was with a bad solder it took me ages to locate but when i found it and it was in the area where the power lead goes into the board and resoldered i have no problems uptill this day (touch wood) let me know how you get on ok

Posted on Jan 08, 2008

  • paul proctor Jan 15, 2008

    hi i dont think the problem is with the power relay voltage source as the problem wouldnt be intermitant.
    Also as you have ruled out part overheating then it looks like it could be a bad solder as if nothing is overheating and this has been fully checked then i would relook at all solder points as this was the same problem i had i resoldered all points around where the power lead goes into the set and around the power voltage relay after doing this ive had no problems.
    youve ruled out most problems it could be so give this a second look.
    I know your probably pulling your hair out now as you have gone through nearly everything it can be hope you get their in the end

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