2600 bxi brutus

timwebb · 2010-12-27 12:51 am

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 · 2010-12-27 1:46 am

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 · 2010-12-27 1:54 am

they are all burnt.

807tubenut · 2010-12-27 1:55 am

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 · 2010-12-27 2:04 am

The BXi2006 uses FQP85N06s.

timwebb · 2010-12-27 2:15 am

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

timwebb · 2010-12-27 2:16 am

i manage to get the name off one.its IRFP064N

any replacements for these?

807tubenut · 2010-12-27 3:05 am

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

timwebb · 2010-12-27 3:14 am

would 3205 work to fix it with?

807tubenut · 2010-12-27 4:08 am

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

Perry Babin · 2010-12-27 4:45 am

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

Register and you'll get a better price.

timwebb · 2010-12-28 7:51 pm

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 · 2010-12-28 8:08 pm

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

timwebb · 2010-12-28 8:13 pm

Perry Babin · 2010-12-28 8:20 pm

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

timwebb · 2010-12-28 8:53 pm

Perry Babin · 2010-12-28 9:49 pm

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 · 2010-12-29 1:06 am

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 · 2010-12-29 2:05 am

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 · 2010-12-29 2:19 am

640's and 9640's

2600 bxi brutus

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