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Sonsivri > Electronics > General Electronics (Moderators: o2, pickit2) > [REQ] Anyone have schematic for the P.S. pcb in a PLM500 (LG 42KK) Plasma??
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comalco2000
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« on: December 28, 2008, 11:16:16 11:16 »
I have one of these plasma 42in flatscreens with a suspected faulty power supply.
I have tried fault finding, but it is difficult with PCB in situ.

Does anyone have a schematic for this power supply perhaps?

All help appreciated.
« Last Edit: December 30, 2008, 09:11:51 09:11 by comalco2000 » Logged
pickit2
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« Reply #1 on: December 28, 2008, 01:22:24 13:22 »
We had a plasma in the workshop a few weeks ago,
Search led me to http://www.pacificdisplay.com/links.htm
Reading the internet forums, it looks like no info posted for power supplies. but they all tend use a generic power supply.
The one in workshop had a bad backlight inverter, but we could not find the problem, so disconnected power feed to the inverter, and rewired the backlight to an inverter which was taken from a cracked laptop screen.
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marty.markoh
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« Reply #2 on: December 29, 2008, 01:49:05 13:49 »
I don't think so that is board code(name of chassis) of this tv-please search more detail & give me this code  - I try 2 upload schematic(serv.manual).
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comalco2000
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« Reply #3 on: December 30, 2008, 09:10:41 09:10 »
It is used in PLM500 Model of LG 42KK Plasma TV
The P.S. has a PN of 3501Q00100A (PLG-421)
I believe it may be made by Sanken in Korea, under contract to LG.

Any help is gratefully received!    Thanks
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marty.markoh
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« Reply #4 on: December 30, 2008, 07:42:22 19:42 »
I think that is chassic name(code) - 42PX5D & this is  factory schematics(from Service Manuals) for this modell-My gift 2 U for New Years Holidays...
Link (steam type) is:
http://rapidshare.com/files/178236632/New_Year_Gift_-_42PX5D_-schem-only.pdf.html
Enjoy! Wink
« Last Edit: December 30, 2008, 07:45:10 19:45 by marty.markoh » Logged
comalco2000
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« Reply #5 on: December 31, 2008, 12:36:04 00:36 »
Unfortunately this is'nt the correct schematic, but thank you for helping.
The Power Supply I have is a SMPS with many power semi's bolted down to the chassis for heatsinking.
Power supply has a high voltage line that drives ZSUS and VSUS pcbs for plasma (about 65vdc I think)

I have also been told that this TV sells as Teac PLM500.

I have a alignment guide sent by someone and it has a picture of the power supply in it.  See attached.

Still after the schamtic if anyone has it please.............?


 
« Last Edit: December 31, 2008, 12:49:15 00:49 by comalco2000 » Logged
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