LG 42PC1RV PDP 42V8


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LG 42PC1RV PDP 42V8

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brandyman
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Aug 4, 2009, 6:02 PM

Post #1 of 11 (11707 views)
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LG 42PC1RV PDP 42V8	Can't Post

My LG 42PC1RV (Chassis PDP42V) started playing up about 6 months ago.

It would switch on and after some variable time it would go into standby. Once it went to standby it would immediately try to power up again but then go back to standby. Blue light on front would flash on and off in time with this event and also noise of relay switching on and off from PSU board. If I unplugged the tv from the mains socket and left for some time and dwitched it back on later it would again work for sometime before once again going through this switching on/off process.

I checked all voltages on PSU board and found them not to exist. I then removed all connectors bar the mains input from the PSU board and checked voltages again. This time all voltages were fine.
I found that if I re-connected all leads to the PSU board except the one going to the YSUS board the voltages on the PSU board were fine. For some reason the YSUS board is dragging all the PSU board voltages down when it is connected.

The TV has now totally failed. Switch it on and the blue light comes on with audible noise of relay clicking but after about 5 seconds relay clicks again (presumably off) and blue light flashes at about one second interval.
There is a board below the PSU board (probably control board) that has two red LED's on it. On switch on both of these leds light up but when the problem occurs one goes out.
If I remove lead between PSU and YSUS board and repower the tv appears to go into standby mode. There is no relay click after about 5 seconds and both red leds remain on and blue light stays on. I am assuming that these leds are some form of basic diagnostic.

I am of the opinion that possibly the YSUS and/or YDRV boards could bve faulty. Any ideas?

ilprincipedeimo
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Nov 29, 2010, 4:51 PM

Post #2 of 11 (11252 views)
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Re: [brandyman] LG 42PC1RV PDP 42V8 [In reply to]	Can't Post

Hi brandyman,
I have the SAME EXACTLY problem with this TV and PSU fail.
Other people change PSU unit and all works fine...
But it's very expensive unit...

I'm searching about fix / part replacement for this PSU.
Do You have some suggestion?

Thanks in advance.
Regards,
Carlo

itemsalecart
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Jan 18, 2011, 7:23 AM

Post #3 of 11 (11168 views)
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Re: [ilprincipedeimo] LG 42PC1RV PDP 42V8 [In reply to]	Can't Post

Me too dude!!
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christinecccc
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Mar 4, 2011, 12:55 AM

Post #4 of 11 (11077 views)
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Re: [itemsalecart] LG 42PC1RV PDP 42V8 [In reply to]	Can't Post

thats awesome <br><br><br>
Christine Bounds
training a weimaraner

(This post was edited by christinecccc on Mar 4, 2011, 12:56 AM)

alstonas
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Mar 21, 2011, 8:35 PM

Post #5 of 11 (11028 views)
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Re: [brandyman] LG 42PC1RV PDP 42V8 [In reply to]	Can't Post

ha ha ha, looks like its a big trouble.
I purchased Panasonic instead of LG and it working great so far.
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(This post was edited by alstonas on Mar 21, 2011, 8:41 PM)

bosxz
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Apr 25, 2011, 1:51 AM

Post #6 of 11 (10930 views)
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Re: [ilprincipedeimo] LG 42PC1RV PDP 42V8 [In reply to]	Can't Post

Me too I'm a big problem to my T.V

(This post was edited by bosxz on Apr 25, 2011, 1:55 AM)

rizzadaile
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Apr 29, 2011, 7:22 AM

Post #7 of 11 (10869 views)
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Re: [bosxz] LG 42PC1RV PDP 42V8 [In reply to]	Can't Post

I have my Sony TV, and it's really good to use.
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bosxz022
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May 4, 2011, 1:58 AM

Post #8 of 11 (10823 views)
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Re: [rizzadaile] LG 42PC1RV PDP 42V8 [In reply to]	Can't Post

Wow nice. But my t.v sonny is not good.

(This post was edited by bosxz022 on May 4, 2011, 1:59 AM)

eddietaylor09
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May 4, 2011, 12:11 PM

Post #9 of 11 (10811 views)
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Re: [alstonas] LG 42PC1RV PDP 42V8 [In reply to]	Can't Post

I also faced the same problem with LG
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TV Spares
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May 9, 2011, 10:54 AM

Post #10 of 11 (10771 views)
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Re: [brandyman] LG 42PC1RV PDP 42V8 [In reply to]	Can't Post

Yes, if the TV powers up with the Y-Sustain Power Cable disconnected then it is HIGHLY likely that either the Y-Sustain or the Single Piece Buffer is shot.

My bet is on the Y-Sustain. (The BIG IC under the heatsink will have a short)

Difficult to source a V8 Y-Sus now.
Fixing Flat Screen TVs for Years.
Owner of - Fix My Plasma
and
TVSpares.com
I'll always try and help.

chrisjericho
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May 29, 2011, 4:37 AM

Post #11 of 11 (10560 views)
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Re: [brandyman] LG 42PC1RV PDP 42V8 [In reply to]	Can't Post

Seems like you are having a pretty bad issue with your TV. I have used LG before and its pretty good. It can be a matter of luck when it comes to electrical items.

(This post was edited by chrisjericho on May 29, 2011, 4:40 AM)

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