Hi Dougc,
Only main board prob I've had was a S/C zener on the 5v line causing P/S to pulse somewhat.
It's in past Vestel/Digihome/Sharp - el al - Quuq PVR files.
PS - no trouble with cats hereabouts - cats are ever cool but cost us these days where Vets now take wild'ish X'rays just to check our wallet contents - We love 'em for thier empathy (think - our Paddy in Emmerdale) but not really so much convinced, suspect some soapy issues - Chris