Question about Philips 42PF9936 42 in. HDTV-Ready Plasma Television
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Posted on Jan 02, 2017
I had similar problem with 42fd9932, run for a few secs or minutes, shutdown and flash red led for ever. Fans in this unit were not causing shutdown although I could stop one and get the red led flashing thing.
Replace c2212 100uf, c2508 4.7uf changed to 10uf, c2664 100uf. I also added clip on heatsink to U7203 8.5v TO-220 case regulator( next to c2212) and a drop of oil to each fan(poked a hole through label center). Something else I did was add a 47 ohm 5w in parallel with fan ps 100 ohm 5 w resistor.
These parts are all located on the two power supply boards. Use Caution 380V is present on these boards. Allow a few min for caps to discharge.
Posted on Nov 04, 2007
SOURCE: 42" philips plasma
when a television turns off by itself and flashes as you say, it indicates that there is a problem inside the tv. If you keep trying to turn it on you may do more damage. It could be something as simple as a faulty fuse inside. If you have no expierience with electrics I suggest you get it checked out by a professional. I had a similar problem with another tele model and it was the fuse in the back of the tele that needed changing. I did try to this on my own but unfortunatley didn't have the right fuse so i took it to a repair shop and he done it really quickly.
Posted on Oct 23, 2008
I had the same issue with 2 of these sets. It ended up being 2 capacitors were bad on the power supply. They are located towards the bottom of the board, you can visually see they were buldging and leaking slightly. I replaced them with 2 I salvaged out of an old computer (of same values) and the tv works as it did before.
Posted on Jan 08, 2009
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