Question about Philips Magnavox 42MF521D/37 Television
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Posted on Jan 02, 2017
SOURCE: Philips 42 in. Plasma shut down
Thank god we purchases the ADVANCED extended warrenty. This tv has been nothing but problems.
Fuzzy picture, picture shutting off after 20 sec coming back on and now blog of colors shut off never to come on again. 7 blinking red lights on the front. Waiting for the repair man again.......
Posted on Apr 13, 2008
SOURCE: blinking red lights
I had the Same issue. on a 50PF9431D/37 set. Many Plasma Set's use a LJ44-00118A PS-505-PH Power supply from Samsun. Know to have this common problem. If you can, or have a friend that can Solder components?. Unplug your set remove the back panel & locate your power supply. It will be the PCB in the center of the set just above the Video/Audio conections. http://www.shopjimmy.com/power-supply-unit-lj44-00118a-from-philips-50mf231d-40.htm. Link to a photo of the PCB. Make a note of the location of all cable connections then unplug them all. Un-install PCB, Check a Fuse first. I believe their is 5 or 6 of them on the PCB. Then replace the two 3300uf 10v 105C Radial capacitors at C8060 & C8059. The location of the caps are in the Lower bottom edge of the PCB. A local shop may Carrie them if not, digi-key has them. Part # http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=493-1754-ND. Total cost was $7 with S/H.
Posted on Jun 02, 2009
Commonly it's going to be a power supply related problem. The two boards that need to be looked at is the Main Power Supply Board or the power supply board for the screen. The one that powers the screen, some manufactures call it a Backlight Inverter Board.
If you have some electronic experience, you can sometimes find a Service Manual for the TV over the internet for less than $20. It will have the all resource material for repairing your TV model. It's just the matter of replacing the bad part on the circuit board.
Posted on Aug 12, 2009
Hi my name is Roety,
I can help you with your issue ,
If you have no TV menu either check for any swollen capacitors on the power supply.
If none are found measuring voltages will localize the defective board or boards the voltage test points are marked VA and VS on the panel and boards.
If disconnecting boards restores these voltages the suspected boards must be replaced .
Tech labor is about $250 plus parts.
Y sus main & Y buffers
If I have helped you with your issue
If you have more questions you can still respond
I will reply asap
Posted on Dec 30, 2009
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