Almost an hour after I'd noticed the fungus on my 350+ more problems... I was watching one hour photo and about half way through there was a knock at the door. Came back into the room and the sync had gone crazy, picture rolling all over the place. I switched the signal to the telly to see if it was a loose connection at the sky plus box and it was fine so I switched it back. Same rolly picture and then... standby. Weird. I opened her up and noticed that the heatsink was pretty warm but then that's what it's there for. Tried switching it back on, got a picture for a second then off again. Let it cool off a bit then tried again and got a picture that was unconverged and in 4:3 instead of 16:9 flicking the convergence switches changed the convergence so I figured it had lost its memory. That was the last picture I got - now it just starts on standby and doesn't attempt to fire up at all. I've tried reseating all the usual culprits, the protection boards and even the boards on the High voltage board to no avail. Any ideas? I'm sure this is the balance of trouble. Yesterday I finally discovered the dry joint in the TV that was causing it to switch itself to standby periodically. Fixed that and was feeling smug - then this comes along!