Tube Amps / Music Electronics
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|7/6/2005 12:26 AM|
|Joel||Musicmaster bass amp loss of power|
Hi there, I recently rebuilt the preamp section of my EL90 Powered Musicmaster bass amp. It was sounding great untill just the other day when I got a drastic drop in vloume and a shrillness it the tone is up ata all. I took some voltages in the amp and some are a little high like ~314V on the plate of the 6AQ5A. I have 152 on V1A and 281 on V1B. The amp seem to be louder when ithe power is just turned off and it is discharging the caps. Any idea as to what the problem is?
|Joel also, all (3) of the tubes are glow... -- 7/6/2005 1:00 AM|
Randy Old amp troubleshooting rule: whene... -- 7/15/2005 7:16 AM