Question about Philips 42PF7220A 42 in. Plasma Television

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Tv not work

Hi, everyone
I have a situation with this model, 42pf7320A/37b that I purchased last year 5/08 and last Friday the TV was on and working fine when suddenly, the screen turned dark with not complete black, in fact there were some marks like the volume bar, but too dim, the audio was fine, then after some time it just turn off, with the red LED blinking like seven times and repeat all over.

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Well, don't feel alone.
Everyone is having the same problems with many brands of TVs.
Somehow built to fail after warranty. I'm sure it's a power supply related problem. From this link here, there is a Service Manual for the 42PF7320.
http://www.scribd.com/doc/6528782/Philips-42pf7320
Page 27 says error code 7 means 8V6 supply.
I'm thinking it's the power supply for the screen. I can't 100% certain.

Posted on May 08, 2009

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I had the Same issue. on a 50PF9431D/37 set. Many Plasma Set's use a LJ44-00118A PS-505-PH Power supply from Samsung. Known 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 connections. 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 26, 2009

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