Teufel Concept E Magnum PE - Subwoofer loud buzzing

[Capacitorial]

Re: Teufel Concept E Magnum PE - Subwoofer loud buzzing

Just wanted to tell you guys that I will give up this subwoofer. I accidently shorted the speaker cables while live. After that, a 220Ohm resistor R223 (the one infront of the little transistor between the two power transistor) started to smoke. After I replaced it, it smoked again. Since nobody has any other idea what it could be and me being on the brink of tossing it out the window, I will sell it for a few bucks now. Too bad I couldn't fix it after all that time. I will have it here a few more days and give it away if nobody else replies here to add some info.

[petehall347]

Re: Teufel Concept E Magnum PE - Subwoofer loud buzzing

most likely blown the outputs and drivers .

[Capacitorial]

Re: Teufel Concept E Magnum PE - Subwoofer loud buzzing

The replaced A1941 has a shorted Base-Collector when soldered in.
But so was the first transistor too, and when i took it out it wasnt. The new one wasnt shorted when soldered in. I Cant understand that.

The smaller 4 transistors are still ok i think. I will Check for shorts after the emitter of the big transistor after desoldering it. this will be the last thing ill do.