When adjusting the attenuators. It used to be much worse prior to Deox-ing them. There is a DC component present while crackling which is of too short duration to be accurately measured.
Can this be the effect of failing capacitors somewhere?
Thanks for looking 🙂
Can this be the effect of failing capacitors somewhere?
Thanks for looking 🙂
You need to remove any unwanted breakfast cereal mascots. If you can do that I'm sure it will sound grrrrrreat again
[emoji1787]
[emoji1787]
So the rails are +-30 vdc. Is that what you get on + & - terminals of C1, C2?
Warning to newbies, work only with one hand when checking with the power on. Use alligator clip to connect DVM negative to speaker return. >24 VDC across your heart can stop it. Wear no jewelry on hands or neck. 1 vdc @ 30 amps can burn your flesh to charcoal. Touch no metal with flesh until checked <1vdc and unit unplugged from AC.
Volume pots often wear out on old amps.
You can download service manual from eserviceinfo.com
Warning to newbies, work only with one hand when checking with the power on. Use alligator clip to connect DVM negative to speaker return. >24 VDC across your heart can stop it. Wear no jewelry on hands or neck. 1 vdc @ 30 amps can burn your flesh to charcoal. Touch no metal with flesh until checked <1vdc and unit unplugged from AC.
Volume pots often wear out on old amps.
You can download service manual from eserviceinfo.com
I just downloaded the service manual, C101 and C201 seem like a good place to start looking. I`ll report back with my findings.
Thanks to all who chimed in 🙂
Thanks to all who chimed in 🙂
