Big Ben
Active Member
So, as mentioned in http://audiokarma.org/forums/index....peaker-silent-until-volume-cranked-up.847285/, I recently acquired a serviced, but not recapped SX-850. Besides the relay issue above, the device sounds good. I checked the DC offset at the speaker terminals and got something around 10mv in both channels, which would indicate to me that the fellow who sold it to me indeed did some adjustements...
That being said, since I’m about to make a mouser order for a new relay for the issue above, this would be a good occasion to also order parts for a partial, or full recap/diode/transistor replacement. So the question is what is worth recapping on a working unit? From lurking around here, it looks like people are usually advised to do the power supply and protection boards at least. Is that right?
As a note, while the unit works well, I do get quite a bit of noise when listening over (low impedance) headphones. Some of the noise is constant, some increases with volume. Lacking a unit to compare, I can’t tell if this noise is a feature of the 70s design, or a sign of leaky/failing components...
Thanks!
That being said, since I’m about to make a mouser order for a new relay for the issue above, this would be a good occasion to also order parts for a partial, or full recap/diode/transistor replacement. So the question is what is worth recapping on a working unit? From lurking around here, it looks like people are usually advised to do the power supply and protection boards at least. Is that right?
As a note, while the unit works well, I do get quite a bit of noise when listening over (low impedance) headphones. Some of the noise is constant, some increases with volume. Lacking a unit to compare, I can’t tell if this noise is a feature of the 70s design, or a sign of leaky/failing components...
Thanks!