S
Stefan Toftevall
- Jan 1, 1970
- 0
Hello group!
Thought I send this question to you Pioneer experts..
Well, this unit came into my shop with blown secondary fuses (2 x
1,25A) which appears to feed the low power section of this unit.
(+/-12V for op-amps and such). The fuses doesn't really look *blown*,
(they're not black) so there seems to be some slight overload.
I actually replaced the fuses and the set operates correct. After 10
on/off procedures the fuses passes away again.
The internal fuse wire can be seen to bend a bit each time the power
is turned on (brought out of standby). This indicates an overload
condition.
There are markings on each of the fuse, B+ and B-.
Since I haven't got the service manual for this machine, and I
certainly hope I won't need one thanks to you guys, I like to know
what actually B+ and B- supplies. Is the poweramp involved in these
lower voltages too?
The main supply for the poweramp seems ok, generating rails of +/-
46Volts.
Any advice is appreciated,
Best regards
Stefan
Thought I send this question to you Pioneer experts..
Well, this unit came into my shop with blown secondary fuses (2 x
1,25A) which appears to feed the low power section of this unit.
(+/-12V for op-amps and such). The fuses doesn't really look *blown*,
(they're not black) so there seems to be some slight overload.
I actually replaced the fuses and the set operates correct. After 10
on/off procedures the fuses passes away again.
The internal fuse wire can be seen to bend a bit each time the power
is turned on (brought out of standby). This indicates an overload
condition.
There are markings on each of the fuse, B+ and B-.
Since I haven't got the service manual for this machine, and I
certainly hope I won't need one thanks to you guys, I like to know
what actually B+ and B- supplies. Is the poweramp involved in these
lower voltages too?
The main supply for the poweramp seems ok, generating rails of +/-
46Volts.
Any advice is appreciated,
Best regards
Stefan