Wawasee JB-2000 issues

[Danzik]

Probably but hopefully not in my PS

Or transformer I really mean

 

[Danzik]

no telling how your amp is different than that schematic,
and the amp here in town that I worked on.
(I never want to work on it again!)

but off of the negative side of the HV capacitor board,
a 10 ohm 10W going to ground. It acts as a little "cushion"
when powering up, and also can blow as a fuse.

any resistor around that value will work.
or is not needed.

but if your negative side goes directly to ground,
then maybe you have a burned open wire or trace
someplace on the capacitor board...

or bad rectifiers. transformer.

don't get shocked!

on them other amps the resistor is in this place. and plate current
can be measured more easily and safely, since it is in a low voltage spot.

 

[Danzik]

no telling how your amp is different than that schematic,
and the amp here in town that I worked on.
(I never want to work on it again!)

but off of the negative side of the HV capacitor board,
a 10 ohm 10W going to ground. It acts as a little "cushion"
when powering up, and also can blow as a fuse.

any resistor around that value will work.
or is not needed.

but if your negative side goes directly to ground,
then maybe you have a burned open wire or trace
someplace on the capacitor board...

or bad rectifiers. transformer.

don't get shocked!

on them other amps the resistor is in this place. and plate current
can be measured more easily and safely, since it is in a low voltage spot.

I know one thing Bayyouradio, when I got this unit all 4 diodes closest to the driver board were all blown so I replaced all 8 with 5408 diodes and figured then I had already found my problem, WRONG unfortunately

 

[Danzik]

no telling how your amp is different than that schematic,
and the amp here in town that I worked on.
(I never want to work on it again!)

but off of the negative side of the HV capacitor board,
a 10 ohm 10W going to ground. It acts as a little "cushion"
when powering up, and also can blow as a fuse.

any resistor around that value will work.
or is not needed.

but if your negative side goes directly to ground,
then maybe you have a burned open wire or trace
someplace on the capacitor board...

or bad rectifiers. transformer.

don't get shocked!

on them other amps the resistor is in this place. and plate current
can be measured more easily and safely, since it is in a low voltage spot.

Also, all I have on the front of my amplifier is what's on this photo, other models were different I think, the one you worked on might have have 4 knobs

 

[nomadradio]

The HV filter caps all look original. Can't make out date codes printed on any of them, but I'm pretty sure that brand "Industrial" has been gone for 40-plus years.

73

 

[Danzik]

The HV filter caps all look original. Can't make out date codes printed on any of them, but I'm pretty sure that brand "Industrial" has been gone for 40-plus years.

73

That was a picture of them before the replacement Nomad here is what went in