![]() These should go hand in hand with E元4 amps. So, my plan was this: Take out the old E元4´s out and put a matched pair of 6CA7EH´s in. And the tubes have had some time on them so I wouldn´t be surprised. Should I suspect there is a short in that very E元4? The tubes were oriented the same way they were before. And once I strummed out a nice loud chord, that same cathode resistor plew open. ![]() the second I flicked the standby switch I get a nice loud pop from the speaker. So I went on and set the tubes back in and set the amp in on-position. So I put a new one in and actually matched a pair and changed to the other cathode resistor too (R418 and R419) ![]() Now the cathode resistor (10ohm 1W) on one of the E元4´s was blown wide open. The top lid is always open so I could clearly see where the sparks were flying. Then one day I get loud crackling and fireworks like it was a Rammstein show from the output section. Then after another round of fuses the head worked fine. So I set a pair of new ones and it was good to go for about an hour or so after which it died again. ![]() I checked the two secondary fuses in the backpanel and those were blown. One day at practice while playing my stack went dead quiet. 80W Solid state preamp and 2圎元4 in the output. And pretty newbie with these tubeamps too.
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