Question about Televison & Video

1 Answer

Picked up a magnavox model 55p8288 from the trash. This thing is in great shape. I have not worked for a while and would like to try and repair it but do not know where to start. I checked the fuses that I found inside and all test good. When you turn the set on you hear a click and then the power button flashes red 6 times. Can you help me as our set we have now is going out ? Rich

Posted by on

  • 32 more comments 
  • The Archery Clinic Nov 10, 2010

    Great, I will be awaiting your reply, Thanks, Rich

  • The Archery Clinic Nov 10, 2010

    This is a projection tv model 55p8288, date code 391q291h, chassis code pvt 910. Just to clarify my post is vague. Thanks, Rich

  • The Archery Clinic Nov 10, 2010

    awsome thanks

  • The Archery Clinic Nov 10, 2010

    sorry the phone rang, I did take a close look at all capacitors and I can not see any burnt, bulged, or cracked capacitors. I will download the manual now.
    Rich

  • The Archery Clinic Nov 10, 2010

    I am taking a quick look at the manual, rich

  • The Archery Clinic Nov 10, 2010

    Ok I took a brief tour thru the manual and yes it is a bit technical. I have some limited knowledge of electronics...high school level. I also need to say I have no remote control for this tv. Rich

  • The Archery Clinic Nov 10, 2010

    Ok I am new to this site and just read your comment about testing component by component. What does IIC stand for ? Microprocessor ? Rich

  • The Archery Clinic Nov 10, 2010

    I can tell what most of the components are.

  • The Archery Clinic Nov 10, 2010

    I am knowledgable with the VOM and a good solder man. I am sorry if I have taken too long to answer as I did not see your comment you posted. I can not stay here for 2-3 hours as I will be sleeping. Can we continue tomorrow after 12:00 noon central U.S. Time ? Or when is good for you ?
    Rich

  • The Archery Clinic Nov 10, 2010

    Ok that sounds great and thank you for all your help ..I am impressed.
    Rich ...I remember calling them IC chips in the old days. See you then.

  • The Archery Clinic Nov 10, 2010

    Hello I found three resistors in the primary power supply that have infinate resistance as in an open circuit. On the power supply diagram they are numbered 3000,3001,3002. They are color coded yellow-voilet-green-yellow. There is no tolerance color according to the chart I looked at. Tolerance as in gold-silver-red so I am having a lil trouble trying to tell what the resistance should be for those resistors. I am thinking that these three resistors may be the problem and I should replace them before going further. Your thoughts ?
    Rich

  • The Archery Clinic Nov 10, 2010

    I removed the board from the unit to repair it ,that was simple. Can you look at the and tell me if these resistors are protecting the transformer or ???????? There is a doide really close to the blown resistors number 2004 on the diagram. I have never used image shack but let me give it a look and see if I can.
    Rich

  • The Archery Clinic Nov 10, 2010

    Ah ha surge protector ok. The VOM I have has 2 settings X1k and X10 ohm on both settings I get a reading like an open circuit( the needle does not move. I also checked the meter and zeroed it. I did not look you must have foun d a parts list in the manual ? I took the pics and downloaded them to my pc. Should I still send them to imageshack.us ?

  • The Archery Clinic Nov 10, 2010

    I see what you mean. I have a radio shack close to home is there a ohm meter you reccomend from them ? I will go and get it. I am still waiting on the imageshack e-mail so I can complete signing up for it to send you the pics.
    Rich

  • The Archery Clinic Nov 10, 2010

    Ok I will get over to radio shack and see what I can get and then I will post back here when I return. Should I try to contact you again today when I return ?

  • The Archery Clinic Nov 10, 2010

    Ok Great , se you then.
    Rich

  • The Archery Clinic Nov 10, 2010

    Ok I went and purchased a 40mega-ohm meter from the shack and the three resistors test real close to 4.7megaohms. So maybe they are ok. Where should I go now ?

  • The Archery Clinic Nov 10, 2010

    Ok here are the resistor readings I checked on the power supply board. 3000=4.63m, 3001=4.61m, 3002=4.59m, 3003=.497k, 3009=1 ohm, 3010=1 ohm, 3012=1.040m, 3300=21.68k, 5103=.0.2 ohm and that should be all resistors on that board.
    Rich

  • The Archery Clinic Nov 11, 2010

    Ok I am a lil confused and very rusty with my skills. So to do this test I would need to reapply the power to the a/c cord and read across each resistor one at a time ? Should I select a/c or d/c mode ?

  • The Archery Clinic Nov 11, 2010

    Ok I just wanted to clarify that so I do not blow the new meter up. Ok I tried that and the meter stayed on zero for both resistors with the power cord plugged in. I still have the power supply board on the bench out of the unit with the cord plugged into the a/c outlet. I took the measurement from the two prongs on the resistor that are soldered into the board.
    Rich

  • The Archery Clinic Nov 11, 2010

    I am not hearing a click ? Maybe because the power supply is out of the chassis ?

  • The Archery Clinic Nov 11, 2010

    Ok I reinstalled the board and ran the test ,before the click, on each resistor .036 to .039 on both resistors. After the click the unit shuts down due to the problem of course. I could not test it out of the chassis.
    Rich

  • The Archery Clinic Nov 11, 2010

    the meter is 10A max ? I have not taken any other readings as I am not sure where to check output voltage ?

  • The Archery Clinic Nov 11, 2010

    Ok the click sounds like it is coming from the center of the chassis maybe the high voltage board withe the large transformer and the flyback on it but I can not pin point the sound exactly. The flyback appears to have a solenoid coil on it but not sure.
    Rich

  • The Archery Clinic Nov 11, 2010

    Ok there is a relay on that board I think it is numbered 1305 could be 305 but It looks like 1305 and it is where the click comes from. I put a stick to my ear touching the relay,like mechanics do and heard it loud and clear.

  • The Archery Clinic Nov 11, 2010

    Ok it looks like I305 not 1305. I found that location on LSB panel section 3 of 3 at location d-2 on the drawing. I am not sure what I am looking at . In the tv on the board I see the relay right there but on the drawing it is showing transistors there? I think.

  • The Archery Clinic Nov 11, 2010

    Ok it looks like I305 not 1305. I found that location on LSB panel section 3 of 3 at location d-2 on the drawing. I am not sure what I am looking at . In the tv on the board I see the relay right there but on the drawing it is showing transistors there? I think. Rich

  • The Archery Clinic Nov 11, 2010

    well have not heard from you in a while so I guess you are done for the day. I will try to talk with you tomorrow around noon central again. Thanks, Rich.

  • The Archery Clinic Nov 12, 2010

    Hello, The HOT is reading zero in any combination (shorted)so I am guessing the flyback went into over voltage and took the HOT with it. Question where can I still find these parts ? How old is this tv ? Do you think it will be worth the repair ?
    Thanks, Rich

  • The Archery Clinic Nov 12, 2010

    should I look for the parts at the stores tghey have listed on the flyback link ? Or is it an old article ?

  • The Archery Clinic Nov 12, 2010

    Yes but we are going to be busy untill Monday so I will catch you then.
    Thanks, Rich

  • The Archery Clinic Nov 16, 2010

    Sorry not to log in today. Went on vacation this weekend and all my house chores before the snow flies are behind. Got much done today more to do tomorrow may be able to contact you tomorrow if not wednesday. Thanks again, Rich

  • The Archery Clinic Nov 18, 2010

    Hello,
    Rich here. We have talked about the TV and decided that the risk of fixing it and the set having other problems is not worth it. But I want to thank you for your help and Now I am working with folks to help them with automotive problems and hope to get hired on to recieve payment for my efforts. Now to firgure out how to give you the 4 thumbs up. Thanks Rich

  • The Archery Clinic Nov 18, 2010

    Yes, This tech knows his stuff and solved my problem.

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 4,889 Answers

Well the first thing you are gonna need is a service manual. I had one for this model somewhere. Will look up my collection, upload it, and will get you the link. We can then begin fixing it.

Posted on Nov 10, 2010

  • 27 more comments 
  • eagle338
    eagle338 Nov 10, 2010

    Found the service manual. Uploading now.

  • eagle338
    eagle338 Nov 10, 2010

    Ok. Here you go
    http://www.mediafire.com/?48hiq64dv8kw8p...
    The schematics are a bit too complicated though. I would say we start with general stuff like checking the capacitors(On power,DM power and main board coz 6 blinks is general IIC error) for plague. However your multimeter should have capacitance measurements to test them. Visual observation , checking for capacitors that are bulged or crackedat the top, may help sometimes but you have more chances of missing a few faulty ones.

  • eagle338
    eagle338 Nov 10, 2010

    Surething.

  • eagle338
    eagle338 Nov 10, 2010

    Sure thing. The genral IIC error just means that the micro-processor is not powering up. The fault is usually located on the power supply itself and we will have to troubleshoot component by component as there is no clear indication to the location of the problem in the service manual.

  • eagle338
    eagle338 Nov 10, 2010

    Oh! Do you recognize the components in the schematic?

  • eagle338
    eagle338 Nov 10, 2010

    Don't worry though. I will refresh your memory and guide you with the repair, provided you know how to use a multimeter and you know how to solder. I am gonna take a short break, and will get back to you in about 2-3 hours.

  • eagle338
    eagle338 Nov 10, 2010

    Yes 12 Central time would be perfect for me as well. And as for your query IIC means inter-Integrated circuit. You can call it a mircroprocessor as it has bus module and EEPROM.

  • eagle338
    eagle338 Nov 10, 2010

    Ciao. Will talk to you tomorrow.

  • eagle338
    eagle338 Nov 10, 2010

    Yes definitely, they seem to be the problem. I am surprised that they do not have the tolerance band though. Can you upload an image to imageshack.us and get me the link? Also when the resistors blow, the component that they are supposed to protect from excessive voltage(usually an IC or diode) also go boom! So that would be the next thing to check.

  • eagle338
    eagle338 Nov 10, 2010

    2004 is not a diode, its a surge protector. Also all 3 resistors you have mentioned are 4.7mega ohms tolerance is 5%. Which begs the question, what range did you set your multimeter to? If you set it to K-ohm or something, you will get an infinite resistance reading.

  • eagle338
    eagle338 Nov 10, 2010

    No you don't have to. First up I think you are gonna need a multimeter with better capabilities. X10K is a range of 10 K-Ohm and X10 is 10-Ohm. Can it read 3 figure values, coz 4.5Meg is gonna read as 470 in X10K mode which I think is why you are reading an infinite resistance. Its out of the range of your meter.

  • eagle338
    eagle338 Nov 10, 2010

    Get a multimeter with an ohm-meter range of upto 10 Mega ohm. No, don't worry about imageshack, coz I have got you the specs of those resistors.

  • eagle338
    eagle338 Nov 10, 2010

    Of course. I will be here for the next 7 hours atleast.

  • eagle338
    eagle338 Nov 10, 2010

    Ciao.

  • eagle338
    eagle338 Nov 10, 2010

    Well now that you have an ohm-meter, test all the resistors on the board. Faulty resistors are usually the cause of broken ICs so lets use that as a pointer and proceed as the service manual does not say what can be the cause of the IIC not working.

  • eagle338
    eagle338 Nov 10, 2010

    3009 and 3010 look fishy. Can you measure the current across them and let me know? Coz its a wirewound resistor. The value should be computed using the formula I*I*R= Wattage. Here wattage is 10W . IF we know the value of I we can determine the value of the resistance and compare it with the 1ohm that you have measured. Expected value is 3.16 Amperes so set the range to 10A on the multimeter. Also you should set it to ammeter mode.

  • eagle338
    eagle338 Nov 11, 2010

    Yes it should be connected to the power supply(Be careful. This where it gets a bit more dangerous). Do not touch the capacitors once you turn on the power). Set it to DC mode as I would expect there would be a rectified to DC by the time it gets this deep into the circuit.

  • eagle338
    eagle338 Nov 11, 2010

    Did you measure this before you hear the click?

  • eagle338
    eagle338 Nov 11, 2010

    Oh! You removed all the connections . Unplug the set, plug in all connections and keep the board turned upside down somewhere. Make sure that the components dont ground with the chassis metal.

  • eagle338
    eagle338 Nov 11, 2010

    Range 100A? If yes then the circuit is working fine. What about other voltages on the board?

  • eagle338
    eagle338 Nov 11, 2010

    Hang on I got a better idea. Observe where the click is coming from and we will test all the components in the circuit.

  • eagle338
    eagle338 Nov 11, 2010

    1305 huh? I am looking at the service manual to try and locate it. You keep looking as well.

  • eagle338
    eagle338 Nov 11, 2010

    Ok hang on. Let me have a look.

  • eagle338
    eagle338 Nov 11, 2010

    Ok. Will talk to you tomorrow then.

  • eagle338
    eagle338 Nov 12, 2010

    If HOT is shorted, then it may be a problem with the FBT as well. Replace both if FBT is faulty. This model is approximately 9 years old. Yes you will get parts. And yes its worth fixing it. It will easily work for 4-5 years if properly serviced. Do you know how to test the FBT? If not then read the article below. IMPORTANT: Read the safe troubleshooting of flyback transformers article first.
    http://www.repairfaq.org/sam/flytest.htm

  • eagle338
    eagle338 Nov 12, 2010

    That flyback is not for your model. I will get you the part number from the service manual. Hang on.

  • eagle338
    eagle338 Nov 12, 2010

    Can you get me the location of the flyback? I mean the marking on the board. The service manual is a mess!

  • eagle338
    eagle338 Nov 12, 2010

    Ok. No problem

  • eagle338
    eagle338 Nov 16, 2010

    Yeah sure. No problem :)

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Model 55p8288


maybe the push button switch is defected ,the solder of the switch is brittle , or crack or cold,try to resolder the switch, if not change it with new one.I incounter like this problem before in the switch , i only resolder the joint then its ok,,try this also maybe can help...

Jul 05, 2008 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

We lost the remote to the tv. model no.55P8288 Serial no.67572804


go to radio-shack or wal-mart or any electronics store and they can set you up with a universal remote control, if not order direct from philips

Jul 27, 2009 | Philips Magnavox 20MC4304 20 in....

1 Answer

My phillips magnavox big screen tv model number 55p8288 doesnt have any sound when i turn it on


Check the audio setting to make sure the internal speakers aren't turned off. Check to see if it's set to use external speakers. If it is setup to run sound through an av receiver check all connections, make sure the receiver is on the correct input setting, and speaker wires.

Jul 05, 2009 | Philips Magnavox 55P9271 55" Rear...

1 Answer

Philips Magnavox 55P8288 Entire picture has green


Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Apr 09, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Magnavox 55p8288 tv not turning on


My problem is the same as the other two ppl. The Tv does not come on only the power button keeps flashing on/off.

Nov 30, 2008 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

55inch. magnavox projection tv. mod.55p8288


sell my the Lenticular Screen (the first screen) or find out what part you need and buy it from me.

danj34 [at] gmail [dot] com

Dec 02, 2007 | Televison & Video

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

131 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74185 Answers

Cindy Wells

Level 3 Expert

5124 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...