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Philips Magnavox model # 9P5034C103

Screen starting shrinking and expanding a few weeks ago but sound was ok. It would go back and forth. As you went through the channels is would only be regular size for about a second, then shrink down. Very weird! Now there is no audio or video. The green power light is on but nothing else but a black screen with no sound. I've read that it is an IC Chip. How do I know what part to get and how to replace it.

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  • andynlinda Sep 23, 2008

    My Philips picture shrinks and it goes back and forth. I was told it would be caused by an IC chip on the power supply board. But not sure which chip. Was not given the location. Please advise. Also if you know where I can get schematic diagram for it, Model # 9P5034C103.

  • Anonymous Apr 07, 2009

    have the same problem but I have no tubes working

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Thats usually related to the center opto coupler . I will research it and let you know the part number in an hour or so. Its a very inexspensive part and easy to replace.

Posted on Aug 04, 2008

  • Sonny Berry
    Sonny Berry Aug 04, 2008

    7412 p/n 932210514682 , 7406 p/n 933894150682, 7413 p/n 933894150682 change all three of these opto couplers, and it will most likely fix this problem. in rare cases 7402 and 7410 will cause this same problem. these parts are located on the large signal pannel it is the panel on the right side looking from the back of the tv, they are in the middle all the way closest to you lined up in a row.

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Ok. I tried to replace all these opto couplers and still have issues. I am not a newbie to soldering. All these opto couplers will run you about 25 dollars plus s/h. I worked all day on it. The large signal board is very difficult to remove. I will now send the board-00APD026C003 to modus link for rebuild. Why you ask. Well, if you can even find this board,its like 315 dollars. I can get it rebuilt, less hassle, for 117 dollars. Here is the link:http://www.moduslinkptstvboards.com/Default.aspx
Philips Magnavox model # 9P5034C103 - moz-screenshot.jpgmoz-screenshot-1.jpg

Posted on Feb 17, 2010

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I have a philips magnavox model # 9P5034C103 the picture /color is orange/red and very cloudy

Posted on May 12, 2010

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1 Answer

Tv picture shrinks


This is a common problem on certain models of Philips Magnavox TV sets. The most common symptom is the screen will shrink and expand over and over. After the TV heats up for a while the video will work like normal. After a few weeks or months your TV will eventually stop working and not have video. You can get complete parts and instructions from www.TvRepairKits.com

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This is a common problem on certain models of Philips Magnavox TV sets. The most common symptom is the screen will shrink and expand over and over. After the TV heats up for a while the video will work like normal. After a few weeks or months your TV will eventually stop working and not have video. You can get complete parts and instructions from www.TvRepairKits.com

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Magnavox 52" widescreen tv year of model 2003



Common problem and fairly easy to fix. 

Problem
Screen shrinks and expands - may or may not correct itself after the TV warms up. After a few days, weeks, or months of having the shrinking/expanding problem you may loose all audio/video but the power light will remain lit!

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Check with the site www.TvRepairKits.com. They have built a kit to fix this problem.

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Philips Magnavox Video Shrinks over and over


If you have the following symptoms check the site www.TvRepairKits.com . They have a repair kit for this problem. 


Screen shrinks and expands - may or may not correct itself after the TV warms up. After a few days, weeks, or months of having the shrinking/expanding problem you may loose all audio/video but the power light will remain lit!



Works on the following Philips Magnavox sets with chassis number



PTV835, PTV836, PTV840, PTV841, PTV842, PTV843, PTV844, PTV847, PTV853 


Or if your Model number is... 



50YP43C101,50YP43C102,50YP44C101,50YP44C102,50YP44C103,50YP44C104,55P9161001,55P9161002,55P9161003,55P9161004,55P9271001,55P9271002,55P9271003, 55P9271004, 55P9271005, 55YP43C101, 55YP43C102, 55YP43C103, 55YP43C104, 55YP44C101, 55YP44C102, 55YP44C103, 55YP44C104, 55YP45C, 60P9161001, 60P9161002, 60P9161003, 60P9161004, 60P9271001, 60P9271002, 60P9271003, 60P9271004, 60P9271005, 60YP43C101, 60YP43C102, 60YP43C103, 60YP43C104, 64P9161001, 64P9161002, 64P9161003, 64P9161004, 64P9161005, 64P9161006, 64P9271001, 64P9271002, 64P9271003, 64P9271004, 64P9271005, 64P9271006, 64P9271007, 9P5031C101, 9P5031C102, 9P5031C103, 9P5034C101, 9P5034C102, 9P5034C103, 9P5040C101, 9P5040C102, 9P5040C103, 9P5040C104, 9P5044C101, 9P5044C102, 9P5044C103, 9P5044C104, 9P5511C101, 9P5511C102, 9P5514C101, 9P5514C102, 9P5531C101, 9P5531C102, 9P5531C103, 9P5534C101, 9P5534C102, 9P5534C103, 9P5540C101, 9P5540C102, 9P5540C103, 9P5540C104, 9P5544C101, 9P5544C102, 9P5544C103, 9P5544C104, 9P6031C101, 9P6031C102, 9P6031C103, 9P60349101, 9P60349102, 9P60349103, 9P6034C101, 9P6034C102, 9P6034C103, 9P6040C101, 9P6040C102, 9P6040C103, 9P6040C104, 9P6044C101, 9P6044C102, 9P6044C103, 9P6044C104, 9P6440C101, 9P6440C102, 9P6440C103, 9P6440C104, 9P6440C105, 9P6444C101, 9P6444C102, 9P6444C103, 9P6444C104, 9P6444C105, PV5571C101, PV5571C102, PV5571C103, PV5571C104, PV6071C101, PV6071C102, PV6071C103, PV6071C103, PV6071C104


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1 Answer

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If you have any of the following problems you may want to check the site www.TvRepairKits.com for a repair kit. Most of the issue below are fairly common with the older Magnavox projection sets. 
Symptom: Screen shrinks and expands - may or may not correct itself after the TV warms up. After a few days, weeks, or months of having the shrinking/expanding problem you may loose all audio/video but the power light will remain lit!

Symptom: No Audio or Video but power light is on

Symptom: Audio works but no Video. Power light still work

Symptom: No Video. Audio is intermittent. Power light still works

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(Note: The below symptoms typicaly occurs after having the expanding/shrinking screen problem above)

Symptom: No Audio or Video but power light is on

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which chip did you replace? and what is the model number of your set?

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philips part# 483520988561 actual part# HCNW136 opto coupler datasheet at datasheetcatalog.com can buy many places just enter it on google.
other fixes philips part# 483520987834 actual # MC34065p and philips# 483520987712 actual# SC78104 some change all 3 and never have a problem again.

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