2600 bxi brutus

[timwebb]

i have a brutus in for repair it has a blown power supply.i cant tell what fet's are used in the power supply.any help?

 

[Perry Babin]

Did you try cleaning them off with acetone then wiping a bit of heatsink compound on them?

If that doesn't work, what is the exact model number?

 

[timwebb]

they are all burnt.

 

[807tubenut]

I have a few of the BXi series, only 2600w one I know of is right here.


HIFONICS BRUTUS BXI2610D MONO CAR AMP AMPLIFIER 2600W - eBay (item 290510779078 end time Jan-08-11 15:41:59 PST)

 

[Perry Babin]

The BXi2006 uses FQP85N06s.

 

[timwebb]

it might be the same but the one i have is silver.the older model.

 

[timwebb]

i manage to get the name off one.its IRFP064N

any replacements for these?

 

[807tubenut]

Digi-Key - IRFP064NPBF-ND (Manufacturer - IRFP064NPBF)

 

[timwebb]

would 3205 work to fix it with?

 

[807tubenut]

The part in your amp is a to-247 package (larger then the 3205's to-220)

 

[Perry Babin]

Arrow Electronics | Electronic Components | - North American Components (NAC)

Register and you'll get a better price.

 

[timwebb]

ok i got the amp to power up but it pulls the speaker in hard.i took the output transistors out and none were shorted what else would cause this?

 

[Perry Babin]

Can you post a photo of the inside of the amp?

 

[timwebb]

...

 

[Perry Babin]

Please post one that shows the audio driver board clearly also.

 

[timwebb]

..

 

[Perry Babin]

I'm assuming that it doesn't draw excessive current when no speaker/load is connected to the amp.

Reinstall the FETs if you're 100% sure they're OK. Measure the DC voltage from leg 1 (red probe) to leg 3 (black probe) for each of the outputs. Which ones have more than ±1v DC?

 

[timwebb]

ok i put them all in now the protection light come on. ill just replace them all.anything else i should look for.

 

[Perry Babin]

To determine where the fault is, you need to determine what section of the amp is going into protect. What output transistors are being used in this amp?

 

[timwebb]

640's and 9640's