D&R 8000 - PSU Issue

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smilan

Well-known member
Joined
May 29, 2017
Messages
467
Hi,
I have a D&R 8000 console that I'm restoring.
The PSU that I have is not an original, but it's a clone of the original one (built by / for the former owner).
After recap the PSU I have the +/- 24V and +/-15V rails working.
On the +48V rail I have only 24V.
The AC supply for both diode bridges is 28 VAC.
Attach a schematic of the PSU with the voltages I've measured.
I need some help to troubleshoot this issue.
 

Attachments

  • D&R 8000 Series III Manual (1)-72.jpg
    D&R 8000 Series III Manual (1)-72.jpg
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I found the problem, one of the legs of the diode bridge was broken, with a new bridge I have the 48V rail working as it should :)
 
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