adan Publish time 2023-07-22 07:51:36

Popping noise

There is a popping noise when I first press play, that goes away after one second. At the beginning it was only from the left channel, but now it affects both channels.
Any idea what the problem could be?
Also, if I press pause during playback and I raise the volume at max, I can hear some interference.
I believe the 2 problems are relationated.
Any help would be appreciated. Thank you!

kaosun Publish time 2023-08-01 11:17:06

Did you replace all aging SMT caps? If no, pls replace all of them.

adan Publish time 2023-08-04 12:45:23

I replaced 3 x 100uf caps, 2 for the headphones out and one in the power supply area. There are other 2 x 470uf throughole, but they seem to be in good condition. Running on battery same problem.

adan Publish time 2023-08-07 04:10:26

Problem solved. It was a bad ground.
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