LG 50PS60 sound no raster

[superg]

Hi All
This tv was initially dead with a shorted 5V line on the mainboard. The mainboard was replaced and now I'm getting sound but no raster on the screen. It doesn't appear to be priming the screen. I'm getting all my voltages to the Y-SUS and Z-SUS and all my fuses are okay.

[ReeceyBurger123]

Re: LG 50PS60 sound no raster

Does the control board have an Led on it flashing ?

[superg]

Re: LG 50PS60 sound no raster

The LED is on steady.

[freakaftr8]

Re: LG 50PS60 sound no raster

Did you replace the main board with the same exact suffix code at the end of the part number?

[aaronwt6]

Re: LG 50PS60 sound no raster

Check the voltage for Vsc on the Y-Sustain board. I've replaced a couple of these lately and both were missing Vsc which caused the screen not to light.

[aaronwt6]

Re: LG 50PS60 sound no raster

Also, not sure if you have a mail forwarding service from the states but that Y-Sustain board is a tough one to source. I've gotten two from sears parts direct.

http://www.searspartsdirect.com/part.../0057/528.html