[Amps] Titan 425 will not turn on

[Joe Giacobello, K2XX]

I've sold my Titans, but besides the HV cable you need the low voltage 
cable between the P/S and RF deck.  IIRC, the power switching is done 
through that cable.  (Make sure the green dot faces up when you plug the 
cable into the Molex socket.)  Also, IIRC, there is a power switch on 
the P/S together with voltage selector and fan speed switches.  Some of 
the earlier units may not have had the voltage selector or fan speed 
switches.

73, Joe
K2XX

> Jim Brown <mailto:jim at audiosystemsgroup.com>
> Tuesday, October 25, 2016 2:03 AM
> There is a nearly complete set of schematics on my website. 
> k9yc.com/publish.htm  I put them together about 10 years ago to help 
> myself with troubleshooting the keying logic in one of the three I own.
>
> The power switch is on the RF deck. Power is interlocked -- there are 
> one or two micro-switches at the rear of the RF deck, so the top cover 
> must be firmly in place (with the rear-most screws tight) for the 
> switches to make so the amp can turn on. I don't remember if there are 
> any in the PSU.
>
> 73, Jim K9YC
>
>
>
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> Ken Asmus <mailto:ken.asmus at gmail.com>
> Saturday, October 22, 2016 6:55 PM
> I am trying to sell some equipment from a local ham who is ill. One of the
> items received is a Ten-Tec Titan 425 amp.
>
> This amp does not power up. Fuses on the external power supply are ok. The
> High Voltage interconnect cable is ok.
>
> There does not appear to be a power switch on the external amp. Is the
> external power supply controlled from the main amp or is it always on when
> connected to AC?
>
> Any suggestions on where to start?
>
> Thanks,
> Ken VA3KA
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