I don't think you will be able find a drop-in replacement. The Ceriatone tranny has a winding for the 12vdc supply for the relays and the voltages are slightly different that most stock power transformers. I think the only choice is either to have some one custom wind a transformer or use a separate tranny for the relays and use a standard tranny for a Twin or similar Fender. You may have to adjust some resistors to get the same voltages. Honestly, I would contact Nik about a new one and explain your situation. But I wonder about a few things?

Was the second tranny a Ceriatone tranny?
When you say "brown"wire, which are you referring? (voltage wise) Just to be sure we're talking about the same thing.
Is this the same failure spot of the first tranny?
If so, it may be a good idea to check a little deeper into things to see if there's something in particular stressing the tranny.

Hmm, those are your filament/heater leads. It's hard to say for sure. They are carrying AC directly to the tubes and wouldn't be an unusual failure zone. Yeah, talk to Nik and a Tech for sure and yes, let us know. If this was the second time for the filament secondary I would be suspect.

Are you using anything unusual as far as tubes?

Mercury Makes a Drop in replacement for the OTS Series. It's a lil pricey, though.

Although pricey, Mercury Magnetics has the best warranty, something like 10 years I think.

Might be worth the extra $$.

@ wyatt I agree. sounds like there is a short somewhere. Maybe a bad solder job shorting out on one or more of the tube sockets, maybe a bad ground on the center tap, or like you said, in the pilot light wiring. Could also be shorting if there was a bad solder on the little junction post just south of the tranny where the taps run into the heater and pilot wires. Could also be a tube shorting out intermittently.

@Burnie  Did the HT fuse ever blow? Did you pilot light ever flicker or did you get any scratchy popping sounds while the amp was playing?

It does kinda suck that there are limited options as far as replacement trannys go. I often thought if i ever had to replace it i would either get one from Nik (most preferable), or if time was an issue, get one from hammond that had all the required taps with rthe equired current except the 6 volt for the relays and then mount a seperate 6 volt tranny also from hammond, rather than get the overpriced mercury. that's how i feel about mercury.

i've often thought about asking Nik if 5 volts is enough for the relays to work properly too as you can usually get a tranny with 345-0-345, 3.15-0-3.15, 60-0, and 5-0, the 5  which would be used for a tube rectifier. 5 volts prolly isn't enough, though, unfortunately.


Gregg

I was able to get the transformers for my bluesmaster directly from MM at wholesale through Nik - he's a dealer - you paypal him the cost, and he sets it up so MM sends you the transformers. Got them for a great price that way! Although it does sound like you need to find the problem first.

Ive since found that there are other transformers but I have already put in the stock one. I wanted to say thanks to all of you. I have another topic (overtone) and my on going quest to get the sound right. So thank you I really appreciate the input.

There is one more possible cause for failure of OT and that is my ohm setting which I had on eight and my speaker, A G12-65 which is 15 ohms ooops. My understanding now is that I can set selector at say 16 ohms for an 8 ohm speaker but I shouldn't go the other way and set an 8 ohm at 4, or a 16 ohm at 8. There is no point in doing this, that I know of. I have no idea why I set the amp at 8 ohms for a 15 ohm speaker but it is the wrong thing to do. So like I said my bad..operator abuse.