Epiphone Galaxie 10 Power Transformer

[jugleeson]

The closest thing Hammond is is a 380V secondary with 6.3V filament. The amp circuit requires 340V and 6.3V filament. Have you ever tried making your own transformer?

[J M Fahey]

In fact I *do* wind my own
Are you considering doing the same?
Fine, but you need a winder (or access to it) plus supplies.
Unless you have a friend who does it and also stocks the different wire sizes, laminations, etc. , it can become way more expensive than hunting for one or even having it custom made.
Economy of scale which in the case of one-offs works against you.

[olddawg]

Couldn't the Hammond and a couple of zeners be used? Would the increased B+ be that catastrophic. It might improve the amp.

[jugleeson]

I'm not that familiar with the use of zeners. Would I put them after the rectifier as sort of a regulator?

@J M Fahley What if took apart the broken transformer and rewound it?

[J M Fahey]

Well, maybe you can.
You can reuse the laminations and the end bells, if any, but wire and bobbin must be replaced because they overheated.
I'm seeing that in USA it's getting more difficult to actually go to a shop and buy parts over the counter, Internet buying is both a boon and a pest.
I Buenos Aires I can get on a bus and in 20/30 minutes be at a shop buying wire, laminations, bobbins, whatever, in any amount, even 1/2 pound of wire, not easy to do elsewhere.
Almost the same thing in São Paulo, Brazil ; but almost impssible even in a BIG city as NY. How come?
I guess it's because we still repair things, while US (and elsewhere) people has been convinced of dumping everything, and buy new.
Check whether you can find supplies locally, before getting into this job.
You may use: Digi-Key - 290BX-ND (Manufacturer - 290BX)
330+330V AC (I'd rather go 10V down than up, any day). , a nice 6.3V winding, extra unused 5V one.
Good for your microprocessor based multieffects board.

[jugleeson]

I found some places online that sell both magnetic wire and bobbins for a pretty reasonable price. Could a transformer of that Voltage be hand-wound? I don't have a winder and wouldn't know who to ask around here.

If I went with that Digikey. If I'm understanding this right it's 660V C.T, giving me 2 leads of 330V. Would that be sufficient?

Also, my amp requires two 6.3V filaments to power the 6L6's. Would the 6.3V secondary on this transformer be C.T as well, giving me only 3.15V? Or am I reading it wrong?

[jugleeson]

What about this one? EDCOR - XPWR005-120/240

[J M Fahey]

Go for the Hammond at Digikey (or direct if you wish).
High voltage is perfect and 6,3V is ample to feed your 6L6 (0.9A) and Two 12AX7 if you wish at 300mA each.
The Edcor looks very good too, and is cheaper.
Any of them would be a vast improvement over the cheap Chinese original .
Not worth handwinding if this is your first one.
*If* you had some shop setup it might be different, but not worth for just one (or 2).

[jugleeson]

The schematic shows 340V, will the 330V provided by either of those transformers be sufficient?

[J M Fahey]

Yes, perfect. You are within 3% of rated voltage, and "erring" on the safe side.
Your *wall* voltage can vary by 6% any day and sometimes up to 10%, go figure.