Re: LG 60PZ550 Sound/No picture
VSC -109
VY 69
VZB 11
Maybe I should say that I have an analog meter. When I Read VSC I have to switch it to negative DC.
Maybe I can't use this meter?...
mikeburns
New Member
Last Activity: 01-24-2015, 08:45 PM
Joined: 01-17-2015
Location: FL
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Re: LG 60PZ550 Sound/No picture
There is a place on the control board for a test pattern R51 and R52.
I put a little paper clip into both holes and disconnected the ribbon cable to the main board but there was nothing on the screen.
I have the TV set to an RF channel that give static. The static was still there when the jumper was in, I think.
Here is a picture. I had reconnected the ribbon cable before I took the pic....Last edited by mikeburns; 01-17-2015, 06:49 PM.Leave a comment:
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Re: LG 60PZ550 Sound/No picture
Thanks MagicSmoke. If the control board is bad, is there a test for that?...Leave a comment:
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Re: LG 60PZ550 Sound/No picture
Yes, it is definitely getting power. I have had the back of the TV off for several days and only noticed the capacitor today. It was hanging askew and when I touched it it fell off completely. So it may have been disconnected the whole time.
I don't know if a bad control board could cause these symptoms, but if it can, I will probably invest in one.
Thanks for your help....Leave a comment:
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Re: LG 60PZ550 Sound/No picture
Thank you. There is a green LED that flashes when the TV is on.
This is on what I call the control board, the one that the cap fell off of.
I will send a picture of the board with the missing cap. It goes where it says C61....Last edited by mikeburns; 01-17-2015, 05:58 PM.Leave a comment:
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LG 60PZ550 Sound/No picture
I have tried powering up with the Y or the Z SUS disconnected.
I have measured VS going into both Y and Z and it is the 203V on the sticker.
I have tried a new power supply board.
I tried disconnecting the main board ribbon cable from the control board and jumpered R51 and R52.
The panel appears unbroken. The unit was turned on when it went black.
The TV stays on and the remote control works.
I noticed a capacitor has fallen off the control board at location C12. Not sure if this happened after I took the back off... -
Re: New Members - please post your introductions here
Hi, great forum and thanks in advance for the help.
I wonder why you have to use a digital meter, why won't my analog meter work?
There is a switch for negative DC voltages.Leave a comment:
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