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In Reply to: RE: Eico HF-30 rectifier problems posted by BofService on April 08, 2015 at 12:44:03
You have two amps..When you switch the rectifier tubes from the good amp to the bad amp,do they still flash? If so,the tubes are the issue but if not,your output tubes could be drawing excessive current on startup.When you recapped the amp,you didn't put over 80uf on the pair of the EZ81s did you?
Nobody ever went broke underestimating the intelligence of the American public
H. L. Mencken
Follow Ups:
Thanks Michael. I was reluctant to suggest swapping the tubes to the other amp lest we get into a cascading series of damaged parts. Also, I believe the first cap in that amp is a 47uf. I don't know what the resistance of the secondary is (as I said, my brother has the amp now) but based on experience it is close to or higher than 150 ohms.
You are probably correct. He should either swap the good rectifiers to the bad amp or vice-versa.
Can you pull the output tubes as see if you still get a flash?
Excellent point Charles..I was going to suggest that as well.
Nobody ever went broke underestimating the intelligence of the American public
H. L. Mencken
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