I recently acquired a 34" Sony Trinitron which displayed no sound or image. I would turn it on, and I could see the green symbols when changing channels, input source, or volume, but I couldn't get an image/sound out of any device I plugged into it.
I ended up looking inside the CRT and noticed that the input board was cracked. Well, I call it the input board, but I think the service manual calls it "AV interface" it seems.
So I thought this had to be the issue, and I took it to a repair shop to solder the broken traces.
Unfortunately, it did not fix the issue but there was progress. I can now hear the sound of the PS2 menu when I plug it in via SCART or S-Video. But still no image!
So I'm posting here asking for help since I am not very knowledgeable in this area. I would like to know where I should start looking, if the issue is not just with this PCB.
Thank you!
Service Manual: https://www.freeservicemanuals.info/en/ ... /KVD3411D/