I have a Mark IV 1x12 combo which I have had since around 2007. Purchased it new. I have noticed an oily like substance that is appearing around certain areas like the switches for Class A/B - Class A, the Triode/Pentode switch and some areas around the EQ.
Don't know where this is coming from, but wanted to know 1) if anyone else has experienced this, and 2) if it's cause for concern.
Aside from that the amp is running great.
Thanks.
Don't know where this is coming from, but wanted to know 1) if anyone else has experienced this, and 2) if it's cause for concern.
Aside from that the amp is running great.
Thanks.
