[TenTec] TT 422 Blowing Fuses

Bry Carling bcarling at cfl.rr.com
Sun Feb 2 21:15:36 EST 2014

81536 HV Board schematic for my centurion 422 amp just for Robb. Yes I did understand.

It shows the three factory supplied relays on the board ... The ones you say don't exist.

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> On Feb 2, 2014, at 8:28 PM, "Robb Urie" <rurie at bajabb.com> wrote:
> Then this amp is certainly not stock...High voltage is applied via the high voltage rectifier board 81538, there are no relays in the original design.  Perhaps the ham who sold it to you modified it without either documenting it or failing to tell you.  Before complaining about poor quality transformers from Ten Tec, maybe a better understanding of exactly what your amp really is would have been better.
> Your original post did state "Only blows the fuse when switched to operate" caught my attention.  I also found that strange, but did not respond as you seemed to have found the primary shorted.  I have had two 422's, a late one that went "Bang" resulting in a new set of HV caps and an early model that seems to be working just fine.  At one time, the 422 was a good value, but now at the current price point I would have to look elsewhere if I was in the market.
> Keep us posted when you get your transformer back.
> 73,
> Robb N0RU
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