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Electronics => Beginners => Topic started by: Bastel1991 on December 24, 2016, 10:29:49 pm

Title: Troubleshoot car amplifier "Renegade ren1100s mk2"
Post by: Bastel1991 on December 24, 2016, 10:29:49 pm

Hey @all,

Im trying to troubleshoot the amplifier that's named in the title, the main fault is that it's literally destroying everything you hook up to it on the front channel, I checked with my multimeter the output and I get almost 21 volts without any signal that it could be amplified.

My first thought was that one of the 4 power transistors is gone bad, but I'm not really sure how to test them I tried various methods with the multimeter on diode test but if I done it right and my readings are correct 3 out of 4 power transistors are gone bad and somehow I can't believe this.

Can anyone give me a hint in the right direction?

Thanks for you time :)

(http://uploads.tapatalk-cdn.com/20161224/a4ad7936395c208cc4c70d8d13024710.jpg)

(http://uploads.tapatalk-cdn.com/20161224/7742038ad68b53d310731e688e88e64f.jpg)

(http://uploads.tapatalk-cdn.com/20161224/d347383f1941fae221ec93388d984969.jpg)

Title: Re: Troubleshoot car amplifier "Renegade ren1100s mk2"
Post by: Ysjoelfir on December 25, 2016, 12:27:56 am

Hi,
why do you think this can't be? It is a fairly common fault that the power transistors blow up, so no problem with that.
But how did you test those?