Hi, A couple of months ago I built the elekit tu8600s. The amp worked well for a while but then suddenly one of my 300B’s stopped working. After a while it worked again but then after some weeks it didn’t work again for a little while, this repeated a couple of times untill ik broke down for good. I then looked inside the amp and checked the voltages and found that tp 13,14, 23 an 24 are double what they should be. I checked if all the parts where in the wrong place and redid some soldering, but I can’t seem to find my mistake. Is there anyone who had a similar problem and can help me?
I did swap the two tubes that I had which showed that one of the tubes was broken and not the amp. But because it was only a few months old I suspected that a mistake inside the amp caused the tube to break and that’s when I found the very high voltages, which strengthened my suspicions that the tube broke because of a mistake I made.
