I've a intermittenly dead Granada/Finlandia TV i.e. nothing when power-on,
except a low buzz.But works alright,if and when it starts.
I need a schematic on this 28in TV or an operation manual(especially the
front end power supply) before I dismount the chassis (mainboard is
mounted on a tilting board for easy dismount) for repair.
Any help wld be much appreciated (except suggestions for replacement,that
is).

Thanks
YG