Ashdown MiniRig transformer

Without actually seeing it, I'm going to guess that it's probably a power transformer, not an output xfo. Generally these days only all-tube amps have output xfo's. Whereas almost all amps have power xfo's.

You just need to find one that has the exact same values as the blown one, and make sure you solder the connections on the new one identically to the old one. Take a picture, write down lots of notes, tape labels on all the wires, do whatever you have to do to get it right.

Also, be aware that you are courting death. It is very easy to get shocked badly, even fatally, by charge stored up in certain power supply components long after the unit has been unplugged.

 

Hi.

+1 for everything Bongomania said, especially the part about courting with death. Not kidding either.

First of all, transformers seldom just blow without any apparent reason.

Secondly, linked directly with the first, it's more than likely that You'll end up with yet another blown transformer if You just replace the old one without diagnosing the rest of the circuit first.

You'll get the VA rating of the transformer You'll need from the amperage/VA rating on the back panel or by doubling the output wattage of the amp. The voltage can probably vary a bit, ~ +/- 2V IMLE.

As the 31V is a "standard" IIRC, why not get the exact one? From Ashdown even?

The amp isn't under warranty anymore, is it?

Regards
Sam

 

I think it's highly unlikely that the power transformer has gone. Much more likely the output stage of the amp has blown shorting the supplies. Take the amp to a tech and get it checked out. Do not add more fuses - you could well make a bad situation worse.

Paul

 

I'm gonna say: Time to get a new amp Probably gonna cost you more in time and effort than buying a used craigslist amp to replace it would.