BRAUN SK5 hum issues

HiFi-Kompaktgeräte wie Studio, Audio, Cockpit etc. und PC 1 integral
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martinblack607
Neuling
Neuling
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Registriert: 20.09.2019, 20:21

BRAUN SK5 hum issues

#1 Beitrag von martinblack607 » 27.09.2019, 23:40

Hello!

I'm currently working on a Braun SK5 from 1958 and I'm having some trouble with hum. Specifically 60hz hum.

So far I've replaced C11 and C13 on the ECC88 tube because it was putting AC on the chassis.

Ive also replaced C49 and W27 because of a low output problem.


Lastly I'm having some 60hz hum occasionally. usually when the radio is on, it'll be fine, then jump in. If I hit it, or poke around I'll go away.

If you've worked on these before, let me know your thoughts and if you know of possible problem caps that need to go!

Thx bunches
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