You'll need an engineer.
Fault symptoms are very often due to dry joints to two regulators fitted on the central heatsink. (The one that I find is nearly always dry jointed is IC951 at centre of board, but occasionally it's partner too).
HT should be checked for correct and stable voltage.
Usually a quick and cheap repair, if the HT is stable.
Ask for an estimate.
Cobweb
August 2006
howtomendit.com for free repair help, information and advice.
