Re: Lg 50pm6700 no picture but sound

Hi gain !

There is 1 chip blown on the buffer board, i didn't see it at first glance, i smelled it that's what caught my attention [ATTACH]109336[/ATTACH].
My question is IF i can find the board, is there a chance that the plasma itself has a problem that will blew-up the board again ?

Thanks,
RickRe: Lg 50pm6700 no picture but sound

Hi gain !

There is 1 chip blown on the buffer board, i didn't see it at first glance, i smelled it that's what caught my attention [ATTACH]109336[/ATTACH]....

Re: Lg 50pm6700 no picture but sound

Hi tom66, thanks for reply

Like i said vsc and vy are all over the place, should they be stable DC voltage ?

I measured them where across some 1 watt resistors where they were marked.

the voltages were varying like crazy, i was not able to get a clear reading, both of them.

Hi guys ! long time lurker here

So it is an LG 50pm6700, chassis pdp50r40000

No picture at all but sound on hdmi source by going blind at selecting an input

Vs = 206v
va = 55v

5v is good also the 17 volts

Heat sink on boths driver boards are warm
fuse on the 16 volts on one driver board is ok
the other one on the 55v supply is ok also

vzb = 150 v

vsc and vy are all over the place can't get a stable reading on the resistor test points ??

Where to go from here ? can't find a...

Re: Cheap ebay ESR meters

I have ordered one, works perfectly . i even test capacitor in circuit.

Re: Portable CCFL Tester

I made one from an old flatbed scanner inverter, put 2 wires with needles at the end so i can stick those in any ccfl plugs