by harpy Thu Feb 16, 2012 12:23 am
One of the Bias caps showed some signs of chemical leakage, so I decided use Dynakit's Bias Circut Kit. It uses higher value and voltage caps with a IN4007 Diode replacing the green one and I choose carbon resistors for whatever reason.
New Transformer cover to match the other amp. In hindsight in may been a poor idea because the old covers were hard to get off and I think I was lucky not to damage the transformer. Plus the quad cap really needs to be uninsalled, but I able to get it on. Also the four corner holes do not match up, but that was no big deal because the center did.
Finally some matched 6CA7 electro-harmonix and a lot Flitz. I biased the tubes to 1.43. Think I am done for for now. Will need to read up on upgrades and start looking at the circuit board caps. Thanks all for the help and good ideas.