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January 27, 2021, 06:44:57 PM

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Author Topic: Coxx GG-30 with low volume issue  (Read 1024 times)

joecool85

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Re: Coxx GG-30 with low volume issue
« Reply #15 on: January 14, 2021, 08:36:35 AM »
SOLVED!

Sorry for long time without update. I received the LM1875 today, I changed it and the problem was still there   :grr
I decided to remove the surrounding capacitors and measure them one by one. It turns out that C12 was damaged, but not in short so I didn't detect it before. It measured some kohm in resistance and 0,5 uF instead of 4,7 uF. That damned capacitor drove me crazy.
Anyways, I changed it and the amplifier is now loud again.

I would like to thank a lot everyone that helped me, in particular dmeek that made a lot of work with reverse engineering.  :tu: Without the shematics I would have been lost. I hope that these posts will help people with the same amplifer.

Good job!
Life is what you make it.
Still rockin' the Dean Markley K-20X
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