[joeguest2]

I have a Proview LCD TV model # PA-32JK1A.

When I plug in the TV, the orange standby light comes on like usual.

When I turn on the TV (with the remote or the front panel button) the blue power light will come on but all I see are a few (6 or 7) thin bluish white vertical lines on the dark (but properly backlit) screen.

The backlights are obviously on but there is no video or audio signal.

There is some slight white noise coming out of the speakers but it is not a real audio signal since it is not at all affected by the volume control or inputs.

I have tried all of the various inputs (dvd, vga, audio in etc.) but there is no change in the screen picture or the audio from the speakers.

I have tried to switch the input mode or bring up the menu with the remote and with the front panel buttons with absolutely no effect.

The only buttons on the remote or the front panel that do anything are the power buttons.

I have tried leaving it unplugged for a few days then plugging it back in with no effect.

I tried presssing lightly at the edges of the LCD screen with no effect.

I opened the back panel to inspect the circuit boards and found no obvious burn marks or bulging/leaking capacitors.

I tested all the pico fuses I could find on all of the different circuit boards and they all tested OK.

I checked the power supply output voltages with a voltmeter and found 5, 12, and 24 volts on the various lines where it looked like it should have voltage, but without a schematic I couldn't be sure if each was correct.

I suspect it might be the TCON board from some of the stuff I've read but I am not an expert.

When I unplug the main input connector to the TCON board the thin white lines disappear but there is still no video or audio signal and the backlights stay on.

When I unplug the left output ribbon from the TCON board (to the left side of the LCD Screen), the white lines disappear from that side of the screen only but remain on the opposite and the backlights all stay on. Same sort of thing happens when I unplug only the right TCON output ribbon.

Apparently I can get a new TCON board for about $100 including the shipping but I would like a second opinion before I start ordering and swapping new parts.

Any help would be appreciated including additional things I can test on the circuit boards with a digital multimeter.

Thank you.