Hi Forum,
I have a problem with my TZ55X71 and I can't find a service manual, so I try it here.
The TV turns on, I have HV and sound, but no picture. When I turn the TV off, a horizontal line briefly flashes up. It's not exactly a line, it bulges out in the middle of the screen. I removed the front panel and turned the intensity on the three colors up and I get the same line as I get when I turn the TV of. I have already checked all voltages on the power supply board and they are all within spec. Could this be a vertical deflection problem? If so, could someone give me some ideas how to verify this.
I have already checked the LA7833, input voltage is ok, vertical input signal doesn't seem to be right (just a .5V spike, I would expect a sawtooth signal), vertical output also is just a spike. Without service manual it's getting really difficult. Can someone please give me some pointers?
Thanks, Sigi
