RF leaking into the controller causing it to hang?
-Sean
On Wed, 27 Apr 2005, skipp025 wrote:
>
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> Mystery: "Repeater Problem of the Month Club".
>
> I just repaired a problem with our 224 Mhz
> Repeater System. Let's see how you fair with
> a guess?
>
> Symptom: Repeater audio would fail, not pass
> the receiver to the transmitter. Controller CW
> and speech audio ok.
>
> Initial Service: Missing Repeat Audio would return
> after re-seating the Link RLC-6 Audio Board chips.
> The repeater would run fine for 1-3 days before the
> problem returned (missing repeat audio)
>
> Second Service: Replaced the RLC-6 board and
> firmware, returned the repeater to service.
> Lasted 1 week before the audio again failed.
>
> 2nd Symptom: Arrived to find the main Controller
> locked in a quasi reseting fault mode. Replaced
> the controller with a spare. Unit lasted about
> 3 days same problems return.
>
> 3rd Trip: Replaced entire Repeater RF deck and Link
> RLC-6 Board with spare (different brand and model)
> Repeater. Controller is still the replaced 2nd unit.
> Everything bench tested for 2 days at the shop.
> Unit failed after 1 day back at the site.
>
> X-Number Service Call: Found 2nd Controller in
> loop fault reset problem (same as the first).
>
> All supply power normal, the same supply operates
> three other repeaters in the same rack. At this point,
> the entire repeater had been swapped out for spares
> and the DC Power Supply tests and works normal
> (operated no where near its max capacity). Stand
> back and scratch your head, then tell me what you
> would do now?
>
> *****
>
> I found the problem, care to guess what it was?
>
> Your turn
> skipp
>
> ps: Answer in a follow up post:
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> Yahoo! Groups Links
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