Dead Hifonics BRX2000.1D. Need Help.

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RaptorHunter

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Joined 2012
#1
Hello diyaudio this is my first post here and I was told that it is a great place to get help bringing amplifiers back to life.

I got a BRX2000.1d that burned itself out of existence for no apparent reason.
Can someone explain me what happened, why did it happen, if it's fixable, and can you guide me to fix it.

The amplifier wired at an impedance of 1 ohm, its highly unlike that it was clipping since no obvious distortion, and the voltage was around 13,4 at the time it died. It was wired with 0 Awg cable.

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I am aware that I need to replace the MOSFETs, and the gate resistors. Can you show me where they are? How many are there? I hope that I not asking too much but can you ilustrate everything that needs to be replaced on the pictures.

Thank you,
 
#2
I've never seen a Hifonics built like this. It may be a counterfeit. That's not important at this point, however.

Did you check the output transistors? They may have failed causing the power supply to fail.

The PNP driver transistors (probably between the transformers) may have failed as well. You will have to read the numbers off of them or measure from the collector to ground to see which have their collectors connected to ground.
 
#3
Perry Babin said:
I've never seen a Hifonics built like this. It may be a counterfeit. That's not important at this point, however.
Click to expand...

I bought it at sonicelectronix I wouldn't think they sell counterfeit amps. But as you said it's not important at this point.

Perry Babin said:
Did you check the output transistors? They may have failed causing the power supply to fail.
Click to expand...

Do I have to replace the output transistors too? How much of the amplifier needs do you think needs to be replaced, is it worth trying to repair it?
 
#4
Did you check the output transistors to see if any were shorted?

I can't tell you if it's worth (you) trying to repair. Some people would jump at the challenge to try to repair it, some people would prefer to buy a new one.

Bear in mind that there's no guarantee that you'll be able to repair it via the forum. It could be a simple repair or something much more difficult.

If you could post a photo of the audio section of the amp along with good quality photos of the driver boards in the amp, that would be helpful.

If you haven't read the basic amp repair page (including the section on taking photos), please do so now.
 
#5
Perry Babin said:
Did you check the output transistors to see if any were shorted?

I can't tell you if it's worth (you) trying to repair. Some people would jump at the challenge to try to repair it, some people would prefer to buy a new one.

Bear in mind that there's no guarantee that you'll be able to repair it via the forum. It could be a simple repair or something much more difficult.

If you could post a photo of the audio section of the amp along with good quality photos of the driver boards in the amp, that would be helpful.

If you haven't read the basic amp repair page (including the section on taking photos), please do so now.
Click to expand...

Thanks for the help, I read your page it was really helpful, I tried to repair the amplifier since the parts where inexpensive, also tested the output transistors and they seem to be fine. I just got a problem with the rectifiers (2xF12C20A and 2xF12C20C) I can't find them anywhere in my country. Are there similar rectifiers and can use?
 
#9
Not trying to dig up and make a necrothread but I have one of these on my bench and I need the real part numbers for the psu gate drive transistors. The only number on the devices seem to be house numbered. They are 667 and 647. Anyone know the real part numbers?

Never mind
Real part numbers are 2sd667 and 2sb647
 
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