60pv450-ua troubleshooting

[Lisalisa101]

Hi I have a 60pv450 with a messed up picture. I have attached a picture of the screen. It has a yellow back ground.sound works. I have verified the voltages on the power supply. The control card is flashing 3 fast and 1 slow flashes. Any help would be greatly appreciated.

[dick_barton]

Re: 60pv450-ua troubleshooting

It's hard to tell anything with the picture being small. Is half the NO SIGNAL text missing and what is the screen like with a picture being displayed?

[tvtimmy]

Re: 60pv450-ua troubleshooting

Try unplugging the ldvs cable that goes from the mainboard to the control board. On the control board there 2 copper holes marked r51 and r52. Put a piece of wire in each hole and then plug the tv back in. See if you get clear test patterns, red,blue,checker board,ect. If you do, the mainboard is bad.