In article ,
"Phil Allison" wrote:
"robert casey"
Looks like the circuit is expecting the diode to start conducting when the
voltage gets higher than the 3KV,
** If the R3000 diode (string) ever conducts in the reverse direction -
that is the end of the diode.
It is NOT a damn zener - you clot - the voltage limiting effect works by
transformer action.
BTW:
There are in fact several ways in that Fender amp the R3000s CAN cop more
than 3 kV in reverse, both at the same time.
Then it is kaput for one of them.
See if you can figure even one of them out.
Leakage inductance between the two primary halves is one of them, I am
curious what the others are?
Regards,
John Byrns
--
Surf my web pages at,
http://fmamradios.com/