I have a question. I recently took my Sunn 200s to the repair shop as I had replaced the tubes, but they were burning one bright one dim in the power tubes and sounded like a electrical storm of noise. He replaced the biasing pot and got it going again but it is still relatively noisy. I said, "What's that?" He says, "Oh, you want that fixed too?""Yeah. would you play a gig like that?" So he says it's the big coke can sized blue Cap. that is causing that. He said replacement part is not available, but he could put in 2 caps @ half the value of the original one inline and it would be the same. Is this true? or is it going to cause more noise? I got the amp for free, but after the 2nd repair I'll have $460 into it. Is that pricing accurate? Thanks.
Sunn tube amplifiers are dead silent when operating properly, and are wonderful sounding and very reliable.
Your so-called "tech" is one of the idiots who gives skilled professional technicians a bad reputation. Find somebody else. Just my 2¢...
Your so-called "tech" is one of the idiots who gives skilled professional technicians a bad reputation. Find somebody else. Just my 2¢...
He charged you how much to replace a bias pot?
This guy sounds like a total hack. Find somebody that knows what they are doing.
This guy sounds like a total hack. Find somebody that knows what they are doing.
Some these repair shops charge a fortune.
The other option is to change the cap yourself.
IF the cap solves the problem. “An electrical storm of noise” doesn’t sound to me like a reservoir cap problem. A HUMMMMM or low power output, then I’d suspect it.
Probably the 30/20/20/20uF 525VDC multisection capacitor, these ARE available new.
Go to a different repair shop, this guy is playing you. It wasn't the basing pot, since that
adjusts both of the output tubes at the same time. Probably it was just a bad connection.
Don't try to do it yourself though, unless you have successfully repaired other similar equipment
before. This appears to be very similar to a Dyna MkIII amplifier, with a front end added.
Capacitor - CE Mfg., 525V, 30/20/20/20 μF | CE Distribution
MULTI-SECTION CAPACITOR - Dynakit Parts
Go to a different repair shop, this guy is playing you. It wasn't the basing pot, since that
adjusts both of the output tubes at the same time. Probably it was just a bad connection.
Don't try to do it yourself though, unless you have successfully repaired other similar equipment
before. This appears to be very similar to a Dyna MkIII amplifier, with a front end added.
Capacitor - CE Mfg., 525V, 30/20/20/20 μF | CE Distribution
MULTI-SECTION CAPACITOR - Dynakit Parts
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