Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

 
 
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Default Orange RK100H , 100W valve amp, 2011

No PbF statements anywhere but I assume it is.
Reported as consistent intrusive mains hum with any settings of
controls, but of course with me it is perfect. Expecting a loose cap or
input socket problem, but nothing found. Before dismantling the amp,
anything to check , from access side only at the moment.
So far,cursory comparison, circuit looks like this one
http://www.schematicsunlimited.com/o...d/OTQ2Nw%3D%3D
 
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