Question about JVC AV-48WP30 48" Rear Projection Television

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Getting more help

Hi tim,

Thanks for getting back to me
I'm not real familiar with a soldering iron, is there a chance i could damage the tv for good if i attempt this? If not i'm willing to give it a go.

Thanks,

hoag34@htomail.com

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You can easily cause major damage, if you are not expereienced with electronics or soldering at all i dont think i would try it. It is pretty simple but things can go wrong. A good repairman will run you $300-$500 which isnt really that bad when you compare it to $2000-$3000 for a good new set!
Let me know what you want to do!

Tim

Posted on Sep 24, 2008

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Turns off after two seconds when turned on any suggestions please?


Hi

It could be a problem of cold solder joints, or solder joints on the main board which have cracked over time due to thermal expansion and contraction of the circuit board. Repair is to find and reflow the cracked joints. You may want to consider hiring the services of a reputable repair professional to deal with getting your set back into normal operating condition.

However TV's attempt to protect themselves from damage by shutting down. Your unit has three main ways to protect from damage.

SHORT PROTECT

The TV monitors various DC voltage supplies. If one of the supplies is missing. The TV shuts off.

X-RAY PROTECT

The TV monitors excessive high voltage and beam current. When the TV detects that one of these is too high the TV shuts off.

OVER CURRENT PROTECTION

This will activate if excessive current drain on the 130 volt supply line. If the TV detects this supply line is too high the TV shuts off.

Most units made in 1999 have a diagnostic mode to help determine the cause.

Thanks for contacting fixya.com

Please do get back to us for further query.


Jan 17, 2012 | Mitsubishi Televison & Video

1 Answer

I have a GE D52GW12 rear projection tv. It seems to just loose power and turn off at random times. I already tried different outlets to get it working again.I can get it back working if I wiggle the power...


The tv a/c power cord have internal damages short on the head of the a/c plug itself.This work job is pretty simple if u can do a basic soldering jobs and have tools like a soldering iron and a roll of solders.Look around in ur house for a table portable lamp u don't used anymore unsolders and take that portable lamp a/c power cord.It have very simular design and make of a power a/c cord.Take the tv aparts simplely just unsolder the old tv power a/c cord and replace it with a portable table lamp a/c power cord.Those stars srews on the tv are called Allan wrench screws,must a have a set of Allan wrench screws drivers to use take out this screws out of the tv.Some ealier DLP tvs set made by GE are using these Allan wrench screws,tries to make it much more difficult to take the tv aparts as GE they're trying not to allow tvs owner to take the tv aparts.Or have any friend to help u can do it,have a soldering iron,a rolls of solders,have basic soldering skills.A Allen wrench screws drivers set u can buy it anywhere in a hardware store.

Sep 03, 2011 | GE D52GW12 52" Rear Projection HDTV-Ready...

1 Answer

I have an rca 60 inch big screen..it just happen to show double vision looks 3d with out the glasses..lol ....sound is all good just the picture..model number..mm61110 chassis number..mmc102g..i love...


Yes it can be fix, first try to adjust the convergence setting in the setting menu then go to convergence section, adjust the red and blue convergence. You should be able to move the red and the blue convergence up, down and left, right but if you cannot move this far enough the convergence IC is defective and should be replaced. This convergence IC is attached to a large aluminum plate, this is the heat sink and the convergence IC has a marking of STK-#### followed by a number, in order to replace this IC you should have a soldering iron, desoldering pump, soldering lead be careful when pulling out the IC you may accidentally tampered or damage the PCB and caused much damage to the unit. Note before opening the back cover of your tv be sure to unplug it first. But if you are not familiar with electronic parts you can contact a service technician to do it for you and save you from stress good day and best regards.

Aug 30, 2011 | RCA D52W23 52" HDTV CRT TV

1 Answer

Panasonic projection tv pt-53wx52c no picture red light flashing 3 times have sound


Hi,
3 times red light flashing is an error code that indicates problem in convergence output section, please check and replace convergence output chips and pico fuse nearby. Chips replacement in circuit board requires soldering work and local tv repair shop will help you if you are not familiar with soldering.
Hope this will help.
Thanks.

Mar 28, 2011 | Panasonic PT-53WX53 53" Rear Projection...

2 Answers

WHEN I TRY TO TURN MY TV ON,THE POWER LIGHT COMES ON BUT NO PICTURE & A LOUD BUZZING SOUND.


for first unplug the main power cord of the tv for couple of minutes and then reconnect it.also before reconnecting the power cord of the tv again remove all the external device wires connected at its back such as dvd player/vcr etc etc.just connect only tv wire and check out.if still the same problem then its quite possible that the capacitors and ic on the circuit board are getting short in between so the circuit is not getting completed and cutting in between so the tv power led comes but no picture comes up..in this case the circuit board needs to be checked with a multimeter.the faulty and burned out component part should be detected and then should be replaced with the help of soldering iron.to make it proper.to avoid further damage i suggest you that do not on the tv again and again as it will short some more tiny components and the reparing cost will increase as per that.at present its the normal circuit short problem in the tv get it repaired before using the tv again.
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also you can get new replaCEment power supply board.this clears the problem completely.
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you can get the required board and components at ----- www.partstore.com -------- or from ------ www.radioshack.com ----
---------
if you are not familiar with doing this you can get it done by local tv repair technician familiar with this model tv.
-----------
This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya.

Nov 20, 2009 | RCA Televison & Video

1 Answer

1989 Sony Trinitron 13" TV: when I press the power button, it buzzes (till I turn it off), and does not turn on until repeated tries minutes to hours apart. Yet if I do not use my TV for days (the...


Hi,

Based on your description a highly probable cold solder joint with the most likely location in the power supply board. Corrective measure would involve re-application of heat using a soldering iron. This would also require familiarity with electronic components and circuitry and of course safe working procedures when working with TV units.

Your best bet maybe to seek the services of a qualified professional, however, if you are considering a DIY (do-it-yourself), pls post back specific model number such KV13XX.

Hope this be of initial help/idea. Pls post back as requested, how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Aug 17, 2008 | Televison & Video

1 Answer

When pushing the power button the tv turns right back off


Hi barbara70,

Based on your post/description, it would appear that your TV is developing a fault in the vertical section. Chances are that it is just a capacitor normally located pretty near the Vertical IC. Physically, it would be bigger than the other capacitors within the same area. It is relatively a simple and low cost repair job.

Should you venture a DIY, pls be reminded of safety precautions when working with electrical devices. Of course this would also require a bit of familiarity with electronic components and circuitry, possible use of a DVM and definitely a soldering iron. Access to a service manual or at least a schematic diagram with voltage measurements would make the diagnosis a lot easier but not a necessity. Should you be uncomfortable going this route, perhaps your best bet would then be to seek the services of a qualified TV professional or at least somebody familiar with soldering works.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Mar 25, 2008 | Televison & Video

3 Answers

NO PICTURE, NO SOUND, TV TURNS ON THEN TURNS OFF


STOP THE PRESS!! I FIXED MY TV for a whopping $26.

I took a wild shot and purchased two STK392-110 convergence amplifiers from http://www.electronix.com/. They ship fast, placed my order on Tuesday evening after coming here and placing my comment. To my suprise the parts were in my mailbox on Friday. The parts were actually $12 but I also picked up a iron and a solder sucker.

So rarewish4us, If you're in the South Florida area I'd be more than happy to take that "JUNK" off your hands. LOL
If I were you, I'd give it a shot before you junk it.


Good luck,
Howie

Jan 29, 2008 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Red & BLue Overlay And Wavy Picture


. they are located on a huge heat sink inside your set. Just look for the largest aluminum heat sink inside your set. You will notice them they are large black ICs with about 16 pins on them. Just unsolder the old ones and solder in the replacements. just be sure to put some heat sink compound on the back of the new ICs where they contact the heat sink. You can get a de-soldering iron at radio shack with a rubber bulb to make the de-soldering alot easier and you will also need a low wattage soldering Iron to solder in the new ones. Just mark any wires you remove to get the convergence module out. That way you will know where the wires plug in when your finished. It will need a convergence adjustment when your finihed. Be careful not to bridge any of the pins with excess solder. Inspect the pins with a magnifying glass when your finished to make sure the solder from any adjacent pins arent touching each other. If you need to know where to buy replacement ICs let me know.

Jan 22, 2008 | Akai PTH5498 54" Rear Projection...

7 Answers

Panasonic PT-47wx53, No power, 3 Blinks


Panasonic PT53WX42F with same problem. 3 blinks after power on for a few seconds, no picture or sound. Solution: replaced two convergence ICs (STK392-XXX) located on the large green printed circuit board. ICs are very large and screwed into two large heat sinks and soldered to board. Cost is approximately $6 each. Easy to replace if careful. May be able to access solder joints on bottom of board by removing screen on bottom of cabinet or simply remove 4 screws that anchor plastic holder to cabinet and tilt up. I did not disconnect any inter-board connections. Remove heat sink screws. Desolder using suction bulb or solder sucker. Works great. Finish off with solderwick braid if necessary to clear holes. 40 watt iron is enough do not apply too much heat to damage board lands. Remove IC. Clean heat sink by scraping away white heat sync compound. Apply generous amount of heat sync compound to new IC and coat evenly. Align and insert new IC holes, resolder with thin resin core solder being careful not bridge lands. Refasten to heat sink. Clean board and inspect for good joints and no bridging. Refasten plastic board holder. Carefully clean projection lenses while back is off tv. Power up and it should be fixed. Parts are obtainable on-line. Solder tools and board cleaner are available at Radio Shack or on-line also. I spent $20 on parts and supplies. This is not hard just a bit tedious. You can do it.

Jul 31, 2007 | Panasonic PT-47WX53 47" Rear Projection...

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