First issue in nearly 2 years.

[ZFMarkV]

Hey I've been gigging my MKV regularly for almost 2 years now and last night experienced my first issue! The amp powered on but sounded very lame...especially Channel 2. Then 3rd set Channel 2 failed completely...Fast forward to today..powered it on and saw the rectifier tube was darK! ..slammed to a store picked a replacement up for $21 and Voila! ITS BAAAACK!

So even though the other channels weren't running in Tube rectifier, it still must be in the circuit..the whole amp sounds "back to normal" .

Just a heads up..and long live Boogie!

 

[KH Guitar Freak]

Strange. I would have thought it would have bypassed the rectifier valves. Do you always run channel 2 in 90W Simulclass/keep the rectifier setting to tube when you run it in 45W Class A/B???

 

[ZFMarkV]

I run ch 1 in 90
ch 2 in 45 with tube rectifier
ch 3 in 45 with ss rectifier

I think I read somewhere on this board that that tube is in the circuit even if not "active". Whatever, all I know is it fixed my issue on all 3 channels.

 

[KH Guitar Freak]

Well, there seems to be your problem. Channel 2 is running tube rectifier. Having the rectifier setting on solid state should work just fine...

 

[boogieman60]

When I broke My rec. tube taking the FS out of the pouch, the V unusable. All the chans. were looooow volume no matter if the tube was selected or not. I think it is a misconception the the amp will work when this tube us " out of the curcuit". I think it controls some voltages. PS I took my FS pouch out of the amp and put it in My gig bag....