That's the problem. I thought that couldn't happen because Q8 was pulled. LOW POWER STUFF FIRST! If anything, you could have started to measure some stuff in the power on MUTE section. I gave you some ideas and you gave me one or two measuremenst, but not them all where Q2 or something driving Q2 was a problem. I want you to cut the trace and add a 1K resistor between ON of the switch and R44/R40. This will add a slight delay to the ON position. For now, also put two diodes in series for D5.
HFe can be measured with the Hfe DMM function at least for the small signal transistors.
For your pennance buy a cheap 2n3055 transistor. If you have a vise, you can squeeze it at the top very hard or you can cut the top off with a Dremel tool. This will show you how fragile the transistors are. Once the temp reaches about 150 C, the transistor is gonner.
Magic Smoke is precious. As you found out, once you let it out, the part ceases to function. The corrolary, of course, it Magic Smoke makes electronics work.
HFe can be measured with the Hfe DMM function at least for the small signal transistors.
For your pennance buy a cheap 2n3055 transistor. If you have a vise, you can squeeze it at the top very hard or you can cut the top off with a Dremel tool. This will show you how fragile the transistors are. Once the temp reaches about 150 C, the transistor is gonner.
Magic Smoke is precious. As you found out, once you let it out, the part ceases to function. The corrolary, of course, it Magic Smoke makes electronics work.
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