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mkiijam

GE BA-5-A capacitor replacement help
« on: January 21, 2021, 02:10:41 PM »
Here is a picture of the cap and schematic to help id what to use to replace them.

Just typical film caps?
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mjrippe

Re: GE BA-5-A capacitor replacement help
« Reply #1 on: January 21, 2021, 02:26:07 PM »
I'm not sure from the photo but they look like paper-in-oil caps.  If so, test for leakage and leave them in there if they are ok.  If they are another type and/or leaky, a good quality film cap would be fine.
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EmRR

Re: GE BA-5-A capacitor replacement help
« Reply #2 on: January 21, 2021, 02:27:24 PM »
Yeah those almost never go bad, unless visibly leaking oil.   High $$$ audiophile cap there! 
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Best,

Doug Williams
Electromagnetic Radiation Recorders

"I think this can be better. Some kind of control that's intuitive, not complicated like a single knob" - Crusty

"Back when everything sounde

mkiijam

Re: GE BA-5-A capacitor replacement help
« Reply #3 on: January 21, 2021, 03:24:14 PM »
Thanks guys,

Some of them are kinda squeezed looking so I thought they may be bad.
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EmRR

Re: GE BA-5-A capacitor replacement help
« Reply #4 on: January 21, 2021, 04:37:19 PM »
yeah they look that way in both of the ones I've restored, they were all good though. 
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Best,

Doug Williams
Electromagnetic Radiation Recorders

"I think this can be better. Some kind of control that's intuitive, not complicated like a single knob" - Crusty

"Back when everything sounde

rackmonkey

Re: GE BA-5-A capacitor replacement help
« Reply #5 on: January 22, 2021, 12:01:38 AM »
Do you have pictures of the whole unit you’d mind sharing?
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Whether you think you can or you think you can't, you're probably right.

EmRR

Re: GE BA-5-A capacitor replacement help
« Reply #6 on: January 22, 2021, 01:55:25 AM »
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Best,

Doug Williams
Electromagnetic Radiation Recorders

"I think this can be better. Some kind of control that's intuitive, not complicated like a single knob" - Crusty

"Back when everything sounde

rackmonkey

Re: GE BA-5-A capacitor replacement help
« Reply #7 on: January 22, 2021, 03:14:50 AM »
Thanks. Is this the same one the OP is working on?

I’d forgotten the reference to a 600:600 input into PP grids. I guess the small amount of added noise is okay to avoid the voltage step up of a traditional 600:60-80k in this case?
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Whether you think you can or you think you can't, you're probably right.

EmRR

Re: GE BA-5-A capacitor replacement help
« Reply #8 on: January 22, 2021, 08:52:10 AM »
No this is the pair I worked on. 
Logged
Best,

Doug Williams
Electromagnetic Radiation Recorders

"I think this can be better. Some kind of control that's intuitive, not complicated like a single knob" - Crusty

"Back when everything sounde
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