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|27th October 2013, 11:55 PM||#1|
Join Date: Jun 2004
Location: T.dot, Canada
Jungson JA-88D crackling and static fixed!
No requests or debates, just wanted to share a success:
Over the last year, my Jungson integrated started creating some crackle and noise from the left channel.
Checking the output, measured a dc offset of >200mV, and fluctuating about 50% higher sometimes. It did settle a bit after warning up, but never completely went away.
Found this site with some info on mods and schematics:
And located the trim pots top zero the positive and negative offset.
Now the amp is dead quiet! I think one of the protection circuits may have been fighting the output to try and reduce the offset.
Hopefully this may help someone in the future.
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