Re: LG 50PN4500-UA plasma TV no picture

Verified all outputs from power supply good and stable. There is no relay on this power supply so no clicking.....Verified voltages on Ymain board (looks like this model combined YSUS and buffer boards into one) and Z - all match that required per the plasma display sticker. Still no flash on led control board....going there next. Any help or suggestions would be appreciated.

Hi,
I have an LG 50pa4500 plasma TV where the screen will not power on. (No picture or glow at all)

The red standby led light is on, when power is pressed it flashes three times (two times fast, delay then another flash), sound comes on and remains on for about one minute, then sound off (white noise only-no source hooked up). Red optical cable led on main input signal board is on.

When i look at voltages on power supply all of the proper voltages look to be correct according to markings on PC board, including the Va@55v and Vs@205v (matches voltages on label)....

Re: New Members - please post your introductions here

Hello,
I'm Wes.
MO:
I am a Electrical engineeer in an automotive electronics company. Products are everything from a simple contact switch to higher level LIN / CAN based communication, to LF / RF communications.
Like to repair everything........site provided some good insight and knowledge to Plasma and LCD/LED TV repairs so wanted full access.