Source for Legend Rock n' Roll 50 High-Voltage Transformer?

[R. Sprattling]

It appears the high-voltage transformer in my Legend R&R 50 amp has bit the dust
(Legend's Service Bulletin #2 describes the symptoms, and my amp fits the
profile - with the exception of two rectifiers and two voltage drop resistors
being fried as well.) Does anyone have a source for a transformer with 120 VAC
in, 12 VAC out + 500 VAC out w/ center tap? The mounts are 2.25" x 1.75". The
original transformer was 6 VAC out instead of 12 VAC, but Legend recommened
replacing with the 12 V version. The original manufacturer, Dietz, has fallen
off the face of the Earth. Thanks, folks.

Rod

[RonSonic]

On Sat, 23 Aug 2003 02:50:00 GMT, "R. Sprattling" <roderick@isp01.net> wrote:

>It appears the high-voltage transformer in my Legend R&R 50 amp has bit the dust
>(Legend's Service Bulletin #2 describes the symptoms, and my amp fits the
>profile - with the exception of two rectifiers and two voltage drop resistors
>being fried as well.) Does anyone have a source for a transformer with 120 VAC
>in, 12 VAC out + 500 VAC out w/ center tap?

That's easy.

What OTHER voltages do you need or did Legend use a seperate tranny for the
solid state section? Sorry don't know them.

> The mounts are 2.25" x 1.75". The
>original transformer was 6 VAC out instead of 12 VAC, but Legend recommened
>replacing with the 12 V version. The original manufacturer, Dietz, has fallen
>off the face of the Earth. Thanks, folks.

This is all manageable, got a schematic I can see?

Ron

[R. Sprattling]

RonSonic wrote:
> On Sat, 23 Aug 2003 02:50:00 GMT, "R. Sprattling" <roderick@isp01.net> wrote:
>
>
>>It appears the high-voltage transformer in my Legend R&R 50 amp has bit the dust
>>(Legend's Service Bulletin #2 describes the symptoms, and my amp fits the
>>profile - with the exception of two rectifiers and two voltage drop resistors
>>being fried as well.) Does anyone have a source for a transformer with 120 VAC
>>in, 12 VAC out + 500 VAC out w/ center tap?
>
>
> That's easy.
>
> What OTHER voltages do you need or did Legend use a seperate tranny for the
> solid state section? Sorry don't know them.

That's it. Legend used a separate L/V transformer for the power amp.

Rod

[RonSonic]

On Sat, 23 Aug 2003 18:11:24 GMT, "R. Sprattling" <roderick@isp01.net> wrote:

>RonSonic wrote:
>> On Sat, 23 Aug 2003 02:50:00 GMT, "R. Sprattling" <roderick@isp01.net> wrote:
>>
>>
>>>It appears the high-voltage transformer in my Legend R&R 50 amp has bit the dust
>>>(Legend's Service Bulletin #2 describes the symptoms, and my amp fits the
>>>profile - with the exception of two rectifiers and two voltage drop resistors
>>>being fried as well.) Does anyone have a source for a transformer with 120 VAC
>>>in, 12 VAC out + 500 VAC out w/ center tap?
>>
>>
>> That's easy.
>>
>> What OTHER voltages do you need or did Legend use a seperate tranny for the
>> solid state section? Sorry don't know them.
>
>That's it. Legend used a separate L/V transformer for the power amp.

The 12V heater thing eliminates a few options, but if it doesn't need to supply
anything else - tubes run fine on 6.3V. I'm thinking that Legend had a specific
tranny in mind when they recommended the 12V heater.

Check the Allied catalog, they still stock and sell tube type power trannies.
I've been running all sorts of experiments with their stuff. Their 227-0113 does
250-0-250 @ 40 mA with a 2A 6V heater. Plenty for up to a half dozen or so
typical preamp tubes. Less if you need DC for the heaters. Under $20.

Ron

[R. Sprattling]

Thanks, Ron. I'll check with Allied. You're right, the 6V version should work
just fine.

Rod

RonSonic wrote:

> The 12V heater thing eliminates a few options, but if it doesn't need to supply
> anything else - tubes run fine on 6.3V. I'm thinking that Legend had a specific
> tranny in mind when they recommended the 12V heater.
>
> Check the Allied catalog, they still stock and sell tube type power trannies.
> I've been running all sorts of experiments with their stuff. Their 227-0113 does
> 250-0-250 @ 40 mA with a 2A 6V heater. Plenty for up to a half dozen or so
> typical preamp tubes. Less if you need DC for the heaters. Under $20.
>
> Ron