Can anyone help me identify the purpose of the burnt resistor in the photo? The amp is a Laney AOR Pro Tube Lead 50watt head. I was having an issue were the amp would momentarily suffer from a reduction volume. I pulled the chassis and found the burnt resistor, I resoldered the point on it and it seems to have corrected the problem, but I thinking that there is a larger problem that just replacing the resistor won't fix. Any help I can get with his would be appreciated. I can't find a schematic for this amp. The resistor meters as a 1K and is tied to a leg of the large cap next to it. Sorry about the large pic.