Behringer ADA-8000 owners: PLEASE READ!!!

[electric]

Just had an ada8000 tranny blow out on me today and I happened to stumble on this thread.

I honestly would rather NOT have phantom power on the unit after servicing it. (I was thinking about disabling mine before the unit broke).

Is there a cheaper transformer out there that could replace the stock behringer tranny if you arent concerned about a secondary for phantom power?

I am not familiar enough with transformers to properly sort through all the various types at a site like Digikey.

In the case there is not a cheap replacement does anybody know the part# of the behringer replacement xformer and where the cheapest place to source is?

Regards,
Electric

[drtester]

Hey Guys,

Came across this thread just tonight... I've done a few different mods to ADA8000s, including fixing the gain jumping.

The transformer is the bad part, as everyone here has mentioned.  But there's something else that hasn't been discussed: the sucker appears to be close (if not in) to saturation under _normal conditions_!

Have a look at the winding that provides the 5V regulator input.  You'll see a rather nasty waveform.  The normal "AC" voltage you see from this winding is round 12v in-circuit, but pull the plug off the circuit board, and measure it again.. MUCH higher!  I think the windings were for much lighter-duty.

Definitely, a better transformer would fix this, although a better solution would be an external DC power supply.

[wingsurfer]

OK - looks like I'm not the only one with a dead transformer. The problem is I just replaced it (+ couple of regs) with a behringer replacement and its just fried. Stupid me didnt check any voltages in the 2 minutes it worked. So now I've wasted hard earned cash on a transformer that's only good as a paper weight. This was a broken unity I picked up on ebay, so maybe it serves me right, but I was hoping it would be an easy fix.
So anyway, a couple of questions..

1. As I'm not 100% convinced it was wired correctly in the first place (one reg had been bodge-soldered in place). What are the colours/colors of the primary? I'm in the UK and need to run on 240V, so have assumed that the primary is red - black. and the blue is the centre/center tap for 110V - is that right? As I now have 2 transformers with no primary continuity - its hard to tell!

2. I'm loathed to buy a second transformer, as reading this forum is seems they are rubbish anyway. So I'll probably go down the external PSU route. what are the secondary windings / ratings. I'm not too bothered about phantom power.

Thanks for your help!

Cheers
Mike