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RobertF · 25th Jul 2019, 9:26 pm

I have replaced the usual wax caps and a few resistors which were way out.
I have powered it up using a lamp limiter. The bulb is just giving a faint glow with full power.
I am only getting 160v at the rectifier (Mazda UU9) . If I remove the rectifier the voltage goes up to 200v. The schematic says it should be 240v. The heater voltage is 4v.
Does this mean the transformer is faulty , or should I be looking elsewhere..

Any advise appreciated.

Robert

25th Jul 2019, 9:26 pm	#17
RobertF Triode Join Date: May 2019 Location: Cavan, Republic of Ireland. Posts: 42	Re: Ultra 761. Actually a T671. I have replaced the usual wax caps and a few resistors which were way out. I have powered it up using a lamp limiter. The bulb is just giving a faint glow with full power. I am only getting 160v at the rectifier (Mazda UU9) . If I remove the rectifier the voltage goes up to 200v. The schematic says it should be 240v. The heater voltage is 4v. Does this mean the transformer is faulty , or should I be looking elsewhere.. Any advise appreciated. Robert