[TenTec] argosy 2

[Mike Bryce]

Snowy,

Do you have .7 V on the base of the final transistors?

And those are bastard transistors, the tab is the emitter which is ground. Check continuity between the tab (E) and ground. If you don’t have that connection, nothing going to work

Is this the argosy I or II?

The argosy I had a tendency of cooking the pre driver that was a 2n3866 on the main board.

also, check the operation of the qrp/high power switch on the back of the radio. It sounds like someone may have been in it before and who knows about that switch


Mike, WB8VGE
SunLight Energy Systems
The Heathkit Shop
http://www.theheathkitshop.com/
J e e p
o|||||||o 

> On Sep 17, 2020, at 12:21 PM, ROLAND HOWELL via TenTec <tentec at contesting.com> wrote:
> 
> 
> Hi Mike
> 
> Thanks for the advice.
> 
> I can now confirm that i have a signal input to the PA board, amplified by the drivers, all the way to the base of the finals, it stops there, watched it with my scope probe and the 9916 counter, so it seems that the new finals i put in on the rebuild are faulty.
> 
> It is drawing a little extra current because the drivers are now in use.
> 
> i have ordered some lm358 ic's as the ones i have are ex equipment and their parenthood is not confirmed, thats a posh way of saying they may be toast.
> 
> Onwards and upwards
> 
> 73
> 
> Snowy
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