Thread: Revox B77.
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Old 22nd Jan 2023, 2:00 am   #8
xbsa666
Diode
 
Join Date: Jan 2023
Location: Chicago, Illinois, USA.
Posts: 8
Default Re: Revox B77.

Quote:
Originally Posted by Michael Maurice View Post
I would suspect one or both of the 2200uF 40V capacitors on the power supply board.

In record, the machine draws a bit more current which can bring the voltages down just enough to not work correctly.

I had this once before only in my case, none of the functions worked correctly. A check on the 24V unregulated line showed it to be 23V which dipped to 19V when any function was selected.
I recapped the power supply recently with new caps, one or both can be faulty, voltage actually drops to about 21V when i press record and play
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