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Old 24th May 2019, 12:49 am   #1
stahodad
Retired Dormant Member
 
Join Date: May 2018
Location: Halifax, Nova Scotia, Canada.
Posts: 11
Default Marconi 2024 not powering up

Hello from Canada. I am working on a Marconi 2024 with power supply issues. Power is getting to the PS board, and the fuse and switch are good. There is power getting about half way through, (some of the big caps have 162 volts) but I haven't been able to trouble shoot further. (even after being unplugged for 20 minutes I got some noticeable shocks).

I have the manual but it does not seem to have a schematic or diagram of this type of power supply. The power supply does not have any noticeable output when plugged into the wiring harness or unplugged, (so It is not a loading issue) .

The puzzling part is I measure the same small voltage (30 millivolts. sometimes 300 millivolts) on each pin, even the pins for the black wires.

I don't see any burned components or other obvious damage. Any ideas would be a great help. Thank you, Have a good weekend. Cheers Chris.
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