At work we have about 150 CTX 17" TFT screens, model S760A. At about the time they were coming out of warranty we had a whole bunch of failures :-(

I contacted CTX but their reply was "I have spoken to my MD. She has said to order in the spare parts to repair these would be far too costly."

Upon investigation (Thanks to Allan Wheatley) it is the power board at fault. The S7 series power board rev A:10. There are 6 electrolytic capacitors on this board which are nicely located near a heat sink so get cooked.

C21 & C22 are 1000uF 16v (RS: 449-0980)
C15 & C16 are 1000uF 10v (RS: 315-0344 or 628-3784)
C17 & C20 are 470uF 16v (RS: 315-0467)

Make sure they are 105 degree C caps and not the cheaper low temp ones.

Total cost about £2! And that is only because RS supply in packs of 5.

Photos of the circuit board - capacitors highlighted in yellow. This is one I had just done so these are new capacitors.

Update: It seems Acer model AL1711 has the same fault. Power board 715L1103-D (PWPC7425A3). Only 4 capacitors on this one.

C926 & C924 are 470uF 16v
C925 & C922 are 1000uF 16v