HiFonics BRZ2400.id Transformer

[Tom7227]

What are the chances that someone has a scrap amplifier ?

I am looking for 1 power supply transformed for this amp, mine has a short from primary to secondary and rewinding the entire thing is quite a bit of work.

Here is the chassis minus the one transformer.

 

[Perry Babin]

Is the short too deep in the windings to insulate? Or are the windings too badly burned?

 

[Tom7227]

I had to removed (3) LV power supply windings, and 1 of the dual secondary windings to get to the shorted winding. Even after that, the actual short was 3/4 of the way into unwrapping it.

They really packed the winding into the toridal core, the only thing left is the primary windings, if I don't get one from this post (not holding my breath), I will rewind it.

 

[seankane]

I have a few Hifonics parts amps laying around, I can post pics, not sure which model will have compatible transformers.

Did they use the same one in multiple amps?

 

[Tom7227]

I have a few here myself, but it seems like this particular model is a bit unique. The primary side has the primary windings paralleled together.

The secondary has 3 addition smaller windings to supply the Low voltage section.

It also uses IRFP064's for the power supply mosfets.

 

[Tom7227]

I am sure a Pic would be helpful.

 

[seankane]

Have you unwound some of this? Looks like things are missing. Is that exactly how it came out?

 

[seankane]

I have a BX2200D that has the same board lay out as yours in the first pic. Down fall is its a good working amp. That being said at least it gives you another search option.

I sold all the big hifonics I had once they were repaired. BXi2600D are easy to come across, they may be the same as well. I have a BX2006D but it looks different.

 

[Tom7227]

I removed the secondary windings to find the short, of course it was located in the last winding.

I have several Hifonics amps in for repair, but none of the ones in the scrap pile aren't usable.

Thank you for taking the time to look.

 

[Donnie Darko]

Long time lurker, first time poster, had to as I'm literally in the middle of repairing my own BRZ2400.1D.

Sorry to hijack the thread, but it's relevant I swear!

I'm going to be replacing all the transistors, mosfets and gate resistors (last two for the second time)

I'm just curious, how do you test the transformers? Is it just a continuity test? Wondering if mine might have also melted / blown a winding.

My amp had +12v and GND connected for approx 5 mins (wiring pulled out).

Mine blew all gate resistors and power supply mosfets, which I replaced (not knowing about the transistors) and when plugged back in, it blew them all again.

I've just bought a new BRX2400.1D to replace it, but would still like to get this one going too.

If I can't fix it this time around I'll be scrapping it however, so you'd be welcome to the transformer providing mine isn't also stuffed hah.

 

[Tom7227]

In my case, the primary and secondary are shorted. There was a trace burnt, and when I repaired the trace it caused a short directly across positive and negative of the incoming power. I removed the transformer, and confirmed the short.

If you need help troubleshooting, you can get help in the forum. Or PM me for specifics on this amp.