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Old 11th Jul 2019, 2:32 pm   #2
Herald1360
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Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,535
Default Re: Hacker Constellation Amplifier

That looks like a bit of a mess- especially the LH? (working) amplifier.


According to to service manual (available from the Yahoo Hacker Audio Group, free to join), there's no capacitor across the speaker connections.


Yes the pictured capacitor looks a bit sorry for itself, but whether it has any bearing on the fault.......? There's a lot of other potentially dodgy components there as well.



Do you have and understand the use of any test equipment (multimeter etc) and soldering ability? There's a table of expected voltages in the A203 amplifiers- if this means anything to you it would be helpful to check them and report back here. If it doesn't this process could get very tortuous.



Although these amps are relatively straightforward designs, they are directly coupled which means that diagnosing faults can get frustrating since a problem in one component can upset or damage others and it can be difficult to see what is cause and what is effect!


Anyway, let us know where you stand and we'll try to take it from there.
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