RS stocks a suitable replacement Part no 272 1032. Having to send this in parts, as Pechorins blocks certain words it considers are double meaning, this causing no end of problems as replies have to be scrutinised to try and determine what part of a word is causing the block in sending.

This capacitor is associated with the vertical scanning circuit and is close to the vertical output IC, the heat it picks up from the IC heatsink being suspected as the cause of the numerous frequent failures. Other small components could also have been affected but most people who replace this capacitor are successful in curing the problem without replacing other items. All above mentioned of course on the basis that your chassis is one in the series as I have not seen your particular model, but if you find C926 then it is.

A range of chassis including ones up to the AV36850 series suffers from the infamous C926 capacitor problem, this developing a short circuit with very similar results to what you report, so if you feel inclined you could maybe investigate the possibility that this is the cause of your problem. The capacitor concerned (usually black plastic covered) stands vertically and should be located near the middle of the board and a little right of centre.