Recent content by Brongle

  1. Brongle

    Fiery Acoustic Model 220 resistor

    After running more tests and making more observation I figured I’d post an update. I found what I believed caused the resistor to arc. Whoever serviced this amp last did a fair deal of monkey business, they replaced most of the transistors including the big power transistors. Unfortunately...
  2. Brongle

    Fiery Acoustic Model 220 resistor

    I currently think that the transistor just below the lava flow is internally shorted causing some weirdness. I still haven’t been able to test that as my good multimeter is elsewhere. What I want to do right now is replace the components that fried and go way further in depth in troubleshooting...
  3. Brongle

    Fiery Acoustic Model 220 resistor

    I recently picked up an Acoustic 220 for cheap. When I got my hands on it I popped it open to make sure there wasn’t anything super risky afoot. After plugging it in I was greeted with the magic white smoke and the smell of brimstone. Upon closer inspection a resistor in the power amp decided...