Re: Spectroniq PLTV-3250 wont start

Also, IC1 (L6598D) was blown as well as the 10 ohm resistor in the high fet gate drive.

Mind that Q11 is a general purpose PNP (not NPN like Q7, as someone suggested somewhere). Mine turned out to be okay.

All working fine now.

Re: Spectroniq PLTV-3250 wont start

Mine had Q1 and Q2 shorted (and the fuse out), and it also looked like ZD3 was shorted. When I took ZD3 out I still measured low resistance, but not entirely 0 ohm (and more than my meter's leads). Apparently this is how the circuit should be.

I also took the time to verify if ZD3 was still allright after I baked it off the PCB (it was glued as well, so it got a bit hotter than I wanted). ZD3 was still okay, but it turns out to be a 15V zener, not 16V as someone suggested (I guess people keep copying what they find on the internet)....