Need a 1968 Solarus power transformer!

[TheLustyGhost]

Mine died.  Any chance of finding a suitable NOS replacement anywhere for a realistic price?  I've been given some options for replacing it with multiple readily-available Marshall transformers, but if I can find a drop-in replacement that has a good chance of lasting another 20 years, that would be great.  Any specific NOS parts suppliers I should be checking with?  Any I should avoid?

Thanks!

[fatlizzard]

Try this link!
http://www.triodeelectronics.com/mq782.html

[TheLustyGhost]

My Sunn's one of the ones that didn't use Dynaco transformers, so I don't know off the top of my head if that'll work.  I'm getting it back from the shop this week (the person I took it to isn't going to be able to get it done in time for a recording session that came up, so he said I should take it to someone else), I can check it then and check.  Thanks, though.

[djc]

I just got my 200s back and it sounds fantastic!  I have(had) Schumacher (probably you too) transformers(code '606 XXX'), my power transformer was absolutely krispy.  I replaced it with a Dynaco P782 from triode electrics.  but, when I bought it it was the last one that was 'vintage' or 're-issue'.  other 782's would work but they had upgrades or changes in the design or something.  good luck!

[basiklybass]

I used a Triode Power Transformer as well for restoring my 200S, well pleased and they seem like great folks. They responded to a couple of questions quickly and said to call them if I had any more questions. Price was reight as well.

[TheLustyGhost]

Mine's the el34 40 watt version with the "Sunn 3-4PT" transformer, not the Dynaco transformer.  The issue, according to the tech who diagnosed it:

The best option is to use a Marshall 50W 2x EL34 PT. The only problem here
is that the Marshall standup mounting  transformers don't have a 5V tap that
the rectfier needs. The earlier JTM-45's did, but they are laydown style and
would not work without some serious chassis mods.

I propose to use the 50W Marshall PT with an additional seperate 3A filament
transformer mounted  next to the PT to supply the rectifier. This is a very
common solution to this situation and works exceptionally well.

Now, my thought is why not just mount the JTM-45 transformer on L brackets and avoid having to do a chassis mod or add a second transformer?  Unless it's significantly larger than the Sunn 3-4PT and wouldn't fit into the cabinet without being sunk into the chassis.

Anyhow, I'd like to track down a NOS transformer if possible.

Opinions/advice?

[jaywalker]

These people can fix your original...    http://www.mercurymagnetics.com/pages/mainframe.htm

[djc]

I looked at that site when I needed to replace mine and nearly shat my pants at the $300 american dollars they asked!  my transformer from triode was $99 I think.  hey if you want the vintage stuff and can pay the bill this is probably for you

[TheLustyGhost]

I actually found a Weber one for $60.  I haven't actually ordered and tried it yet, but both Ted Weber and the tech who is going to install it have compared it with the schematic and say it will be a good match.

https://taweber.powweb.com/store/022798sch.jpg (the part number is W022798).  You  can specify that you want it converted to stand-up mounting when you order, and he'll change the end-caps and mounting hardware so it should be a simple, drop-in replacement.

EDIT:  this is for the earlier, 40 watt EL34 Solarus, not the 60 watt version that came out in '69 or '70.

[TheLustyGhost]

Ok, the Weber transformer has been installed and tested by Bob Dettorre of DST Engineering, and he says it's working great.  I'll have the amp back Tuesday and test it out myself, but based on his appraisal, it sounds like it's probably the best deal going for this particular transformer right now, if you need one.  The retail price from Weber is actually lower than the wholesale price Bob was paying for similar transformers, but it is apparently well made.  It's no Mercury, but it should do the job.

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