Question about LG 42PC3DV 42 in. Plasma EDTV
My plasma is about 2 years old and it shut itself off. When I try to turn it back on you can hear the switch or "click" trying to come back on. The light on the front turns green and then it turns itself back off. So the light turns red again. Could it be something in the switch and how can this be fixed???
The voltage rating of a condenser is not the voltage you can expect to find if you take a measurement across it, its the maximum voltage that can be safely applied, generally capacitors are rated at about 85% by engineers, although this isn't always true but a typical capacitor rated at 400VDC would have 340 to 360 volts across it.
Posted on Nov 10, 2017
Sounds like my Samsung. Searched web and said to check the capacitor (good thing there was only one capacitor) rated at 100 uf at 450 volts. Measured at the capacitor - has only 380 volts. Have a 150 uf and 220 uf at 400 volts. (Samsung's capacitor was 450 v.) Worrisome, yes. Tried all combination, but only 150 uf plus the 220 uf would work. Measured 390 volts.
Posted on Nov 07, 2017
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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: 42pf9956/37 philps plasma
I don't know why but this got my TV on.
I took off the back cover and found the source of the clicking.
Two blue plastic rectangular relays in the exact middle.
When I pushed the power button, I felt the top relay click, and I saw a flash from the bottom one. (they are right next to each other)
I took a hair dryer and placed it over the two relays for about 1 minute and tried the power.
It clicked only 4 times and then came on!!!!!!!!!
For some reason heat helps the relay.
If anyone is a tech and can explain this, please do.
My tv is on and it didn't cost me anything.
I just can't turn it off now!!!
Posted on Apr 11, 2008
i hear a clicking noise- the clicking noise is most likely you ballast trying to power the lamp, but failing. this may indicate a defective ballast if you have recenty purchased a new lamp.I recomend you have your lamp tested to help narrow down the cause of the defect. It's highly unlikely for a new lamp to be dead on arrival
Posted on Dec 21, 2008
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