Phillips 32PFL3504D/F7 LCD

[Mad_Professor]

Re: Phillips 32PFL3504D/F7 LCD

100V? That's quite high... what is the voltage across them?

Measured both they go to 80v DC immediately before the set goes dead.

EDIT: I was fooling around with the diode setting on my crappy centech DMM because I was bored and decided to test all the diodes. Came across the diode circled in red as shorted, I remove it and test it again, it read .79; Then I tested the resistors above circled in green with the 200 ohm setting and they too were shorted and when I removed them, they both read 0.04-8????

If I look up the band code they come out 0.39 ohm with 5% tolerance. Am I reading this correctly?

[Mad_Professor]

Re: Phillips 32PFL3504D/F7 LCD

EDIT: I was fooling around with the diode setting on my crappy centech DMM because I was bored and decided to test all the diodes. Came across the diode circled in red as shorted, I remove it and test it again, it read .79; Then I tested the resistors above circled in green with the 200 ohm setting and they too were shorted and when I removed them, they both read 0.04-8????

If I look up the band code they come out 0.39 ohm with 5% tolerance. Am I reading this correctly?

NEVER mind I'm an idiot! I misread my decimal on the meter.

Ok so back to the panny 100v caps with 80v across them.

[Mad_Professor]

Re: Phillips 32PFL3504D/F7 LCD

bump

[Mad_Professor]

Re: Phillips 32PFL3504D/F7 LCD

I'm gonna toss it, since I don't know how to fix or troubleshoot this shit.

[Mad_Professor]

Re: Phillips 32PFL3504D/F7 LCD

What would cause the inverter protection to trip?

I went ahead and remove protect3 jumper to see if the T.V stays on with the inverter and ccfl, It does. But the transformers don't get hot, gets up to 110F each. I've checked each ccfl individually, every single one lights up and stays steady.

So maybe a faulty protection circuit?

[randtek]

Re: Phillips 32PFL3504D/F7 LCD

I have fixed some of these by replacing the resistors listed below with the new values listed.

Location____Original value___ New value
R1943. . . . . . 820K. . . . . . . 390K 1/4 W
R1944. . . . . . 820K. . . . . . . 390K 1/4 W
R1945. . . . . . 150K. . . . . . . 220K 1/4 W

[Mad_Professor]

Re: Phillips 32PFL3504D/F7 LCD

I have fixed some of these by replacing the resistors listed below with the new values listed.

Location____Original value___ New value
R1943. . . . . . 820K. . . . . . . 390K 1/4 W
R1944. . . . . . 820K. . . . . . . 390K 1/4 W
R1945. . . . . . 150K. . . . . . . 220K 1/4 W

Why replace with lower values? Would this fix the T.V circuit protection trip?

R1945 is 390k, please advise.