Dynaco 400 diod block ?

[billybeer]

I have a Dynaco 400 with a missing diod block. Thus resulting in a dynaco. I was wondering if anyone knew of a replacement part and what the spec of the original were? I think it is the same block as the hafler dh 200 but I don't have any specs on that one either.
Help is much appreciated,
thanks,
Bill

 

[HDTVman]

I'm sorry I don't have the specs. for the bridge of the Dynaco ST400 for you. I do however own both of those amps. The bridge in the Dynaco should be rated fo 200 volts and 25 amps. I'd go for a 35.amp bridge myself. The Hafler operates at lower voltage and current that the big Dynaco so I don't think they use the same bridge but it could look similar.

Later
Bruce

 

[kevin gilmore]

I have worked on lots and lots of dyna400's over the years
and have never ever had a diode bridge failure. After putting
in the new bridge, before you turn it on, pop the 4 fuses
and turn it on. One of the main electrolytics might be shorted
in which case something is going to pop, so stand back when
you turn it on.

 

[billybeer]

thanks Bruce ,
that's what I needed to know, I ordered a new 200 volt 35a form digi for a whopping $2 and some change
and thanks Kevin, I will do that. My cousin's went out about four years ago and he had a tech replace it but it was the only thing wrong in his. I hope i am that lucky.