@stereo5 Nope. Dry. As in it has "dried" out over the years from not having the flux flow properly and cracked. Cold is a faulty solder joint from the start by not having the iron hot enough. I said connection instead of joint to help clarify in case the OP was unfamiliar with the terms.
Hum!!
My Jolida 102 has been great for 10-20 years. Recently, about every hour, the thing bursts out with a loud, VERY loud base-like HUM (both channels and subwoofer). I flip it off, then on, and it's fine. Then about an hour or two later, same thing ...
Is this worth fixing? Troubleshooting? Any place in LA area you would recommend?
Is this worth fixing? Troubleshooting? Any place in LA area you would recommend?
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If the amp can be cycled off and on with the hum going away for a while, its not a bad solderjoint. Tubes can do this if they have a cathode/filament short. But the problem is in both channels so I don't think its that. A filter capacitor in the power supply could be failing. I've seen them act in exactly this way, and the amp is old enough and they didn't have very good filter caps to begin with, so I think that's the problem. This should be attended to- it will only get worse and could damage the power transformer if the cap is also leaky! |
Agree that it's most likely a power supply cap. Whatever you do don't use George Meyer (I've lived in the LA area since 1977). Check out: https://musical-fidelity.com DeKay |
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