Electronics > Repair
Dual 30V/5A lab supply MCP M10-DP-305E equivalent
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shakalnokturn:
I have one of these cheap-built but good by today's standards linear lab supplies.

One output has no regulation can anyone identify clones-of or similar models that I may be able to find a schematic for?

The regulation PCB's are marked "DCPOWRE-1C". (Engineer was dyslexic...)

Thanks!





Grandchuck:
Maybe this?

https://www.google.com/search?q=hy3005f-3+schematic&rlz=1I7RNQN_enUS491&sxsrf=ALeKk02DFIlJmDDzrkyo2ihQpsdaycqiWg:1582386595493&tbm=isch&source=iu&ictx=1&fir=u_zCmtk897hW4M%253A%252CCZztig4In-B0_M%252C_&vet=1&usg=AI4_-kSP9wyi-uwUwoUgktdCU_1uMAEHQQ&sa=X&ved=2ahUKEwiLuq-3weXnAhVEjK0KHUn3CckQ9QEwAHoECAoQBA#imgrc=u_zCmtk897hW4M:
shakalnokturn:
Thanks, the HY3005D definitely seems close at a first glance. I'll took into that in more detail later.
shakalnokturn:
Thanks to Grandchuck for pointing me towards my PS being a not so fantastic Mastech clone.

I found a few crusted and rusted relay switching transistors, the current regulation problem was a defective UA741.

Moderators: Feel free to move from T.E. to repair if more appropriate.
tautech:

--- Quote from: shakalnokturn on February 25, 2020, 10:29:12 am ---Moderators: Feel free to move from T.E. to repair if more appropriate.

--- End quote ---
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