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In Reply to: My beloved DAC is humming.... posted by AbeCollins on June 14, 2025 at 17:03:22:
I am certain that one of the 6800uF cap on the +20V rail went bad but while I had the DAC open I replaced all four caps.New Nichicon caps from Digikey. I didn't replace the regulators.
What a pain removing old caps with solder wick. Wish a I still had my solder-vac solder sucking tool.
Four fresh filter caps installed using Nichicon brand from Digikey.
Time to button it up.
I managed to fix it w/o letting any magic smoke out.
Sounds wonderful again with no hum!
Edits: 06/19/25
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Follow Ups
- No more hum. Replaced 4 caps in the DAC - AbeCollins 18:21:41 06/19/25 (4)
- Nice work! - E-Stat 08:19:14 06/20/25 (3)
- Thanks - AbeCollins 11:45:09 06/20/25 (2)
- RE: Thanks - E-Stat 12:59:34 06/21/25 (1)
- RE: Thanks - AbeCollins 04:38:51 06/22/25 (0)
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