Help with Hifonics Brutus BXi1600D that does not power up

[Mrtraffic]

Hi all,
I´m German and i have a problem with the same Amplifier. The Red Power LED.
I´ts the Hifonics Brutus BXi1600D.
For testing i have a Batteryloader 12v and i connected the Amp.. So i can switch on. After two or three seconds of time they do a "click" an the Power LED is red...
All pieces in the Amp lookung good, but there is a white ceramic piece( 5w33ohmJ)looks a little bit brown or blown...
maybe this piece is broken.....

i can take a photo for help i´f someone want to help me.

Thank you

Sry for the bad English...

 

[Mooly]

Have you checked the 33 ohm resistor ? It can sometimes be hard to tell if it 33 ohm or 0.33 ohm if the markings are burned.

 

[Mrtraffic]

The measuning Device shows 33,0 if i check the resistor

 

[Mooly]

That is pretty conclusive that it is OK and correct at 33 ohm.

These are quite a complex piece of electronics. You really need to have the full circuit diagram available and start a methodical test procedure.

Most of the problems seem to be related to the power devices and rectifiers and their drive. Even if you find something like a shorted FET there could be other components or a primary reason why it has failed.

 

[Mrtraffic]

OK. I don´t have the circuit diagram and it is not possible to get these from Hifonics... So i think i must check every parts...
I think i will begin with the Mosfets....
They have 3 legs.. on the fets can i read f1 G31 FQP65N06
Can someone tell me which way i can check these Parts. there are 6 on every side of zhe Amp

 

[Perry Babin]

If the protect LED is lit, the amp likely has shorted output transistors.

You should not read anything near 0 ohms between the legs of any individual transistor, no matter the probe orientation.

Post a photo of the inside of the amp.

 

[Mrtraffic]

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