I have now checked the SMPS board, but so far there is no conclusive result. I had to unsolder the two flat cables that connect the board to another board (looks like the main processor board), both ends are soldered. The schematics for the 81xx and my model seem to be quite similar. There are some differences in the components (my power driver FET

OK, I have just opened the TV and noticed that it's not as easy as that. The SMPS and the rest are mostly connected by soldered wires. I guess I'll just start with the power supply then...

Hi ipaul, thanks for the advice. After checking the power supply I intend to disconnect the attached PCBs to see whether it starts up. Do you think this would work or does the SMPS require some sort of minimum load? Kind regards, Leo

Hi Peter, how similar are the 810x and 83xx models? Do you think the schematic would be helpful? Kind regards, Leo

Thanks Tillquist, this looks great, if a little complex I have no idea how well it matches the 83/00, but I'll try to find out soon! Greetings, Leo

Hi, my Avant 100 Hz VTR, Model 83/00 from 1996, went out with a bang, in a quite literal sense. Now when I plug it in I hear some repeating hissing sound as if it's trying to start, but nothing happens. Not even the LED will light and I can't get any reaction out of it. I suspect it's a failure in the switching power supply, and my first