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-   -   amp protection light on (http://www.diyaudio.com/forums/class-d/208010-amp-protection-light.html)

pike 3rd March 2012 12:28 PM

amp protection light on
 
My hifonics brutus bxi1606d 1600 watts super d-class mono only powers up in protection I've tried it without hooking up any speakers or jacks and that's all I get I've opened it and everything looks ok can someone help me fix it please ????

bmmc 30th March 2012 07:52 PM

brutus in protect
 
i have the same exact model with the same symptom.everything checks ok.did you ever find your problem?

nigelwright7557 30th March 2012 08:50 PM

If it has output mosfets then check those first for shorts.

bmmc 31st March 2012 12:29 AM

brutus in protect
 
mosfets check ok.

kimberlator 19th July 2012 05:02 AM

My hifonics brutus bxi1606d 1600 watts super d-class mono only powers up in protectio
 
Big Ic Circuit inside amp, output mosfet driver ic...That's all the issue...You may change it but be careful and first discharge all voltage reserve on cap's, DO THIS FIRST!

tauro0221 19th July 2012 06:37 AM

Hi,
Normally when the protect light it is "ON" is because it is possible that you have a high voltage in the output transistors. Since the speaker relay will not close you can no read the voltage at the speaker output connections. The only way to find out it is by checking the voltage directly from the output transistors "source" pin of the output transistors or if you can read it from the output relay. If you have mosfet for output transistor then from left to right the first pin is the gate, the middle pin is the drain and the right pin is the source. If you have voltage in any of them then one of the transistors is leaking.


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