One day I broke my JVM 410h, So I have to replace all the tube and one of the transformer, I give it to the only man who could repair it in my area but after the repair the amp works, but the sound is not the same as it was, the sound it's like a typical Mashall, but I wasn't able to have all the gain like before it's like even on the OD 1 and 2 it's sounds like the crunch channel and the Clean green one have no sound at all, you have to push all the knob to get a sound on it, so I wonder if someone can be able to help me with this issue ?
Trouble with my JVM 410h
Whizzercone
Well-Known Member
V1 is bad or they didn't hook something back up. If you have an extra tube, put it in V1 or swap one of the others to V1. Check Clean green to see if it's normal.
