Re: Husun 55
"Well a very quick google shows that to be a 5 volt regulator, so if the output is 6.3v there is something wrong.
Gordon."
Not necessarily so, a good many manufactures put one, two, or three diodes in the "Earth" leg to raise the output voltage to, say 6.3V. for valve heaters. I know that this is an S/S unit but even so look at the schematic just in case. Definitely needs a heatsink and I suspect isolating pad and washers
John
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