Collapsing picture into a bright spot on power off.

[old_tv_nut]

Originally Posted by DeLorean00

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On the schematic, you can see R31 a big 15W 2500ohm power resistor and it is connected to the picture control on the front of the set...

Hmm. I don't see a picture control on the schematic. Are you talking about the contrast control, 10k P1A? Or maybe the brightness control 100k P3? Both of these appear to be connected to high (supply) side of R31. I see R31 is connected to the focus control and focus coil, so its value will affect the focus voltage, which seems to be OK judging by your picture.