[TenTec] Orion II - Power up problem

[Ron Castro]

While it's hard to diagnose a problem like that over the Internet, several 
folks on this list (including me!) have had problems with their Orion II's 
losing capacitors on the power distribution board.  In particular, C6, C7 
and C9, all 470 uf caps in a voltage regulator circuit that provides power 
to the CPU.  Fortunately, the board is very easy to access and the 
capacitors can be ordered from Newark or most any other supplier.  Look for 
caps that have low ESR and good ripple specs.  Take a look in the archives 
of the list and you'll find an interesting string about this problem.

It is indeed possible that this is not what's wrong with your radio, but 
it's a good place to start.

         Ron  N6IE
      www.N6IE.com


----- Original Message ----- 
From: "Tim Heger" <n3xx at charter.net>
To: <tentec at contesting.com>
Sent: Saturday, November 03, 2007 5:43 AM
Subject: [TenTec] Orion II - Power up problem


> I'm having the following problem when I try to power on my Orion II:
> After turning on the power switch, the xcvr cycles at about once per 
> second, continuously from power on to power off for as long as I leave the 
> power switch turned on.
> For a fraction of a second, the alc light and meter light come on then go 
> back off in sequence with the power cycling.  Also, as the lights go on & 
> off, I can hear the relay operating in my amplifier.
> With all cables disconnected from the xcvr except the power cable, the 
> on/off cycling still happens.
> I have measured the pwr supply voltage at 13.9V, and also tried another 
> power supply known to be good.
>
> I have had the xcvr for less than 1 year, so it's still under warranty, 
> but trying to avoid sending it back to the factory.
> Has anyone on the list had the same problem?  Or have an idea what might 
> be the cause?
>
> Tnx & 73,
> Tim - N3XX
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