When I got the 188 the 7815 output was nearly zero and I assume the shorted
tantalum caused the low voltage. After I found the bad tantalum and
replaced it the 7815 voltage was still very and the output pin to ground
mesured 12 ohms. I had a NOS Radio Shack 7815 still sealed in its package
so Iused it and that's when pin 3 went to 23 volts and that nearly made a
grown man cry because I thought I fried addtional components. The PCB was
running too hot. After getting a known good 7815 the B+ stayed at 15 volts
and the unit runs cooler and seems to function except that the dial
calibration is off. I'm trying to find a manual.
73
hank wd5jfr
"Ralph Mowery" wrote in message
...

"Henry Kolesnik" wrote in message
...
23 voolts on output!
later


The way I read it , the 15 volt regulator had gone bad and was passing a
much higher voltage as it was not regulating . That was giving 23 volts
on
the output instead of the 15 volts it was suspose to.