17-05-2012, 04:29 PM
They don't scare me!
I think the fault is in the audio amplifier. I haven't had any time to investigate; I was up far too late the night before cleaning it up ready for the photograph session before leaving for work.
Although it was cheap because it was dead, it did work after cleaning the power switch. But that was before I took it apart - something else has gone wrong since. The junction of the output transistors is against a rail, but the quiescent current is OK, so it's nothing too serious. I'll get there - just I'll get there sooner with the schematics...
I think the fault is in the audio amplifier. I haven't had any time to investigate; I was up far too late the night before cleaning it up ready for the photograph session before leaving for work.
Although it was cheap because it was dead, it did work after cleaning the power switch. But that was before I took it apart - something else has gone wrong since. The junction of the output transistors is against a rail, but the quiescent current is OK, so it's nothing too serious. I'll get there - just I'll get there sooner with the schematics...
