Re: Samsung 215tw display cuts out

Phew, dodged a bullet there! I pulled the unit apart again and measured the fluoros with respect to the frame - yep, one return wire shorting to the frame. So disassemble the panel again and trace the black return wire (the Sugru works fine but I probably put too much on). I had probably pulled the black return a little too much and it bit in to the tube-holding frame. I fixed that (note: good idea to lay a piece of Kapton tape across the edge to prevent this!) and test - no short.
Reassemble and test - yay!

Re: Samsung 215tw display cuts out

Well, I seem to have had the reverse of symptoms - my screen just went blank one night (no flickering beforehand). I made sure it was just the backlight and proceeded to replace the caps on the power supply.
Success! ...except that after a while (maybe an hour) the top left corner gradually went black -as in the liquid crystals were behaving strangely, not dead pixels.
Thanks to this thread I came to the conclusion that a CCFL return wire was getting hot.
Removing the fluoros from the panel confirmed it - the returns for the...