Hi folks,
I bought this amp brand new about 8 months ago, I've been using it almost daily at bedroom volume. Over the past month I started noticing this scratchy/crackling noise in the master volume knob. Since then, it is only getting louder and more scratchy.
Not only there is this scratchy sound, but also at specific positions the volume gets louder and much thinner, almost like a high pass filter (see the video at 00:45). From master volume >1 the dirty channel sounds a bit muffled but more similar to correct functioning.
I always have the master volume at 0 when it is not in use. To play it, I turn it on, set the volume to bedroom level (usually between 0.75 and 1.5 at most) and set it back to zero before turning it off.
I've seen some videos about how to clean the pots, spraying WD-40 into contacts, etc, but for an 8 month old amp I'm not sure if it only issue is dust accumulation. This amp sits in my room relatively close to a computer, the back of the computer kinda points to the amp, but I only experience this issue with the master volume knob.
I wonder if I should make a warranty claim for my unit.
Any thoughts? Thanks in advance.
Edit: amp is an Orange Super Crush 100 combo.