Viore / LG 42" Plasma TV Control board LED info?

[Setag]

I would like to know if anyone would know what the 4 green led's  indicate to the upper left side of the main chip (LGPCMx05A)? A working TV has the middle two lit, my tv has the top 3 lit. A diagnostic tool perhaps? Is there an LG repair manual that could shed some light on this.

My control board part number is : 6870QCH0CSC ;  model : 42V8 &X3 ; LGEPDP 06016

The Problem with the tv is no picture but sound and input select, volume , etc.. work fine. In a dark room a half a dozen pixels will fire red at random spots on the screen, but very dim.

Also what should the voltage be at the large ribbon cables on the Z-board to ground? I get 70volts, I don't think that is high enough, but i don't know what I should expect here.

Any help will be greatly appreciated, Thank you,


Setag68