I just picked up a Mark IIC+ head and I'm having some issues with the lead channel. With the volumes cranked and the lead channel engaged, I'm hearing the pre-amp gain with the lead master way down. As I turn the lead master up, it seems to blend with the clean channel; it sounds cleaner and cleaner the higher up I turn the lead master and with the lead master way down, it sounds like a crappy fuzz pedal. Most of the pots are pretty scratchy and I can tell the amp was played a bunch. It needs some servicing for sure but does anyone have any idea what might be the issue with the lead channel? Could it be a bad preamp tube? Which preamp tubes should I check? The clean channel works fine and sounds awesome. I'm looking for the liquid leads though, and I'm not getting them at the moment.
BTW, it is a factory C+, long chassis with GEQ and reverb. Not sure if it's simulclass but I'll find out when I pull the chassis this weekend. Another cool thing about this amp is that it has Randall Smith's initials on back instead of Mike B's. It was a once in a lifetime find. I have no issue paying for a tech visit, but was hoping it might be something I can address quickly just to check out the lead channel. Thanks in advance!
BTW, it is a factory C+, long chassis with GEQ and reverb. Not sure if it's simulclass but I'll find out when I pull the chassis this weekend. Another cool thing about this amp is that it has Randall Smith's initials on back instead of Mike B's. It was a once in a lifetime find. I have no issue paying for a tech visit, but was hoping it might be something I can address quickly just to check out the lead channel. Thanks in advance!