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macrotech 1200 amp


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#1 Gwyn Davies

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Posted 23 July 2013 - 11:20 PM

Hi there. I have a problem with the above amp.The right hand channel has a d.c offset voltage of about 2 volts across the level control. I have replaced the balanced input I.C( a MC33079) but it is still the same.Any suggestions? Many thanks,Gwyn Davies,Wales.U.K

#2 joust

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Posted 29 July 2013 - 02:36 PM

Did you check that cap C144 (100uF, 35V)? It may be leaky...

Alain

#3 hoanglucky

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Posted 01 August 2013 - 11:30 AM

Hi!
you may check R103, after that you can change C140, C141, C105, C106.