Hifonics Brutus BXI 2008D

mike49504 · 29th January 2010, 03:04 PM

I just got this amp in for repair. The power supply is shot in this amp.

They are using DFP70n06 as the fets. Wondering if there is a good cross to theese?

Perry Babin · 29th January 2010, 03:31 PM

Rfp70n06

mike49504 · 10th February 2010, 05:00 PM

Ok i put all new fets in the power supply all new gate resistors and checked the drivers they seem to test fine.

when powering it up it will draw 10 amps of current i removed the rectifiers to diable the output section. Amp still draws 10 amps of current.

Wondering where i go from here?

Perry Babin · 10th February 2010, 05:06 PM

Is the right, falling edge of the gate drive signal perfectly vertical down to within ~2v of ground on every power supply FET?

mike49504 · 10th February 2010, 06:02 PM

Is there anyway to check it with a meter ? My friend took off with my scope and sine wave generator to make all the plugs and test leads and ect im going to need to be more productive and spend less time trouble shooting

Perry Babin · 10th February 2010, 07:12 PM

Put this one to the side until you get your scope back. There's no point in guessing at what's happening if you have a scope.

mike49504 · 9th March 2010, 02:49 AM

Perry,

Im back to this amp i took the drivers out for the fets. And forgot what was in there Wondering if you know what drivers they are using for this amp ??

Perry Babin · 9th March 2010, 03:14 AM

PS FETs?

The attached photo is from a BXi2010. The 2006 is the same so I'm guessing that yours is similar.

mike49504 · 9th March 2010, 03:49 AM

cool thank you Thats what i needed to know.

So Q7 A is c3228
Q8A : a1275
Q7: 1275
q8: c3228

Correct?

Perry Babin · 9th March 2010, 03:51 AM

Q7/7A are KTC3228
Q8/8A are KTA1275

29th January 2010, 03:04 PM	#1
mike49504 diyAudio Member Join Date: Sep 2006	Hifonics Brutus BXI 2008D I just got this amp in for repair. The power supply is shot in this amp. They are using DFP70n06 as the fets. Wondering if there is a good cross to theese?

29th January 2010, 03:31 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Rfp70n06 __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

10th February 2010, 05:06 PM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Is the right, falling edge of the gate drive signal perfectly vertical down to within ~2v of ground on every power supply FET? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

10th February 2010, 07:12 PM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Put this one to the side until you get your scope back. There's no point in guessing at what's happening if you have a scope. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

9th March 2010, 03:51 AM	#10
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Q7/7A are KTC3228 Q8/8A are KTA1275 __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links


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10th February 2010, 05:00 PM	#3
mike49504 diyAudio Member Join Date: Sep 2006	Ok i put all new fets in the power supply all new gate resistors and checked the drivers they seem to test fine. when powering it up it will draw 10 amps of current i removed the rectifiers to diable the output section. Amp still draws 10 amps of current. Wondering where i go from here?

10th February 2010, 06:02 PM	#5
mike49504 diyAudio Member Join Date: Sep 2006	Is there anyway to check it with a meter ? My friend took off with my scope and sine wave generator to make all the plugs and test leads and ect im going to need to be more productive and spend less time trouble shooting

9th March 2010, 02:49 AM	#7
mike49504 diyAudio Member Join Date: Sep 2006	Perry, Im back to this amp i took the drivers out for the fets. And forgot what was in there Wondering if you know what drivers they are using for this amp ??

9th March 2010, 03:49 AM	#9
mike49504 diyAudio Member Join Date: Sep 2006	cool thank you Thats what i needed to know. So Q7 A is c3228 Q8A : a1275 Q7: 1275 q8: c3228 Correct?

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