Audio amp Mystery

Started by billbowden April 1, 2017
On Sunday, April 2, 2017 at 6:07:53 PM UTC-4, Bill Bowden wrote:
> > > >I suspect it wasn't really the transformer that > > changed. Class AB push pull circuits like > > those used in small radios often have a > > small thermistor to set the idle current. > > I suggest you check k that area. > > M > > > Yes, I thought of that idea, but I don't have a schematic or a circuit > layout picture so it would take a lot of time to trace out the circuit to > construct a schematic. It's obviously an intermittent connection, so all I > can do is look around and hope to find it. But it's working fine now, so I'm > going to leave it alone. > > .
if it ain't broke, don't fix it is good policy. next time though, look in the area of the bases of the two output xitors. m