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Looking for schematic to repair my old DC Power Supply DF-1731SB-5A

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sansanda

Joined Jan 17, 2025
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Hi All.

I'm looking for the Zhongce's DF-1731SB-5A schematic in order to repair my 5v/3A dual channel PS (see the photo).

df1731db_5A.jpeg

As I can see in Internet, it is a very common linear power supply, so it can be found under other names and brands and configurations (1 , 2 or 3 channnels).

For example:

1. Velleman LABPS23023.
2. Promax FA-665B.

I would be very grateful for your help.
 
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