I simply slipped the head into the cabinet and powered up with my hand hovering over the kill switch. All the way in I got a runaway short, max amps then, I slipped the chassis half way out and it came up just fine... slipped it back in and fireworks, slipped out nirvana. Well, I guess you know where this is going, what happens when I flex the chassis? BINGO! I can control the short. Long story short both the collector and emitter leads of Q4 (which is attached to the chassis heatsink) were cracked. Whoever it was who posted about cracked leads on that heatsink, give yourself a pat on the back from me.
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I didn't even replace that transistor, I fired up the microscope and spot welded in some new leads... I love how I can do microscopic work now, makes me look like a genius, but we all know the truth about that.
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