Eganter Tweaker 40

[tube dude]

Hey Folks,
I have a customers Tweaker 40...like new.
Amp blew the fuse just under the ac plug in.
It has been replaced 3 times. Once without the tubes and
it immediately blows.
Other 4 internal fuses and the one in the twist out fuse holder are all good.
I have no high tech way to test the transformer but per Blad
at Egnater this one has the good batch of power transformers....
Me I don't think so.
I did get continuity between all the wires of the power transformer.
Black to red, red to blue etc..All have continuity to each other.
Any ideas?
It's maybe a couple of years old and very well taken care of.
Now out of warranty...figures!
I may send this to Mercury Magnetics and have it really tested.
Just wanted some ideas!
Thanks
tube dude

[Jazz P Bass]

No schematic?

The only way to prove that it is the transformer blowing the fuse, is to disconnect all of the secondary wires from the transformer & power it up.
If it still blows fuses, then Bruce has it wrong.