OK, I followed a thread on fixing this TV but it seems to have stopped before I got all the info I needed. So far here is what I've done. Replaced the power supply (it was bad for sure) and moved on to the Y-sus which showed very low and pulsing voltages witht the buffer boards connected but about 190 and 50vdc with them disconnected. Replaced the y-sus and buffers and put the shorting plug into the control board with the main board disconnected from it. The screen lit and went thru one test pattern and that was it. Re-checked the y-sus and the voltages are down again so I disconnected the boards and it's back to 190vdc and 50vdc on vy and vsc on the y-sus. Now I don't know whether to get another buffer board for the one I think just quit or what. Is there an enable voltage for the y-sus that senses a short in the buffers and then keeps the y-sus from turning on? I can hear the control board trying to cycle the test pattern with the pins shorted but no screen again. Also the main power light is lit when tv is plugged in and turns off when the power button is pushed (but it does enable the power supply). Kind of lost here.
Comment