24-09-2021, 05:42 AM
First power up of a beasty like this after a visual, flick the power on briefly with the valve out, have you got HT on the big cap? Pop the valve in, clip lead of voltmeter onto pin 8 (g1 pentode) after 10 seconds or so there should be about 0v on said pin 8,if not, SW off, replace coupling cap. Power back up, check DC conditions. A lot of folk would replace the bridge rectifier and check resistor values too prior to powering up but valves are very forgiving, just keep an eye on it in case it red plates.
It would be a good idea to disconnect the record player from the amp and service it separately. Those two big brown caps in parallel look tired and look like motor run caps, if motor won't run replace.
Andy.
It would be a good idea to disconnect the record player from the amp and service it separately. Those two big brown caps in parallel look tired and look like motor run caps, if motor won't run replace.
Andy.
