Crunch channel losing gain intermittently? Preamp Tube?
Posted: Tue Nov 08, 2016 6:59 am
Hi guys,
My S1 45 combo is losing drive intermittently on the crunch channel only. All other channels (bright clean, warm clean, super crunch) are fine and dandy. When it happens, it's like you have someone sitting at the amp dialling out the gain knob down to minimal gain. Tiny volume drop (could be perceived) at the same time, but nothing major. It comes back again a few seconds later.
I took a look at the amp when warming up, and noted that one of the preamp tubes doesn't glow as bright as the others, so that will be the first thing to replace...what I guess I am asking is that is there anything else I should consider as a possible problem if the tube change doesn't help?
Thanks in advance.
My S1 45 combo is losing drive intermittently on the crunch channel only. All other channels (bright clean, warm clean, super crunch) are fine and dandy. When it happens, it's like you have someone sitting at the amp dialling out the gain knob down to minimal gain. Tiny volume drop (could be perceived) at the same time, but nothing major. It comes back again a few seconds later.
I took a look at the amp when warming up, and noted that one of the preamp tubes doesn't glow as bright as the others, so that will be the first thing to replace...what I guess I am asking is that is there anything else I should consider as a possible problem if the tube change doesn't help?
Thanks in advance.