[TenTec] Trying to save a Paragon, help!

[Robert Mcgraw]

Cleaning the connectors on the interconnection cables is a good start and
very good suggestion.  Some type of contact cleaner will also assist. 
Remember on contact cleaner,  "LEAST IS BEST"  don't drown the radio.

The 9V battery is only to keep the memory alive when the PS is off.  It
should be a NiCad as it is recharged from the PS.

There is a 4.7 uF capacitor on one pin of the Microprocessor.  This C and
a series R form a reset circuit to allow the RAM to load before the MP
starts running.  If the RAM has not fully loaded when the MP starts, no
telling what configuration the radio will come up in.  The electrolytics
get old, dry out and decrease in effective value, thus reducing the RC
delay.  If in doubt, change the C.


73
Bob, K4TAX



> I suspect the connections between the front panel and the main board are
> an
> issue. Try reseating those white cable connectors at both ends and see if
> you get a better response from the controls. Everything should work while
> the power is on, even without a 9v battery as that just maintains things
> when power is off.
>
> =Vic=
> WA4THR
>
> ----------------------------------------------------------------------------
> ------------------------------
> To: 	Ten Tec List <tentec at contesting.com>
> Subject: 	[TenTec] Trying to save a Paragon, help!
> From: 	Steve Mercure <w5en at hotmail.com>
> Reply-to: 	Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Date: 	Wed, 2 Jan 2013 21:57:07 -0600
> List-post: 	<tentec at contesting.com">mailto:tentec at contesting.com>
>
> A non-ham coworker was recently given some ham gear because he works at a
> radio
> station.  This gear included a Ten Tec Paragon that I am attempting to
> get
> working, with little luck.  I have a couple of questions of the list of
> things
> to try before I recommend that he send it to the factory. When turned on
> the
>
> radio comes on in different modes on the display and I can not change any
> of
>
> the modes from the front panel.  The previous owner, now SK was an
> obvious
> smoker.  So far I have tried:
> Removing the 3 plug in cards and cleaning their connections to the bus.
> I have tried resetting the radio using the red button on the side with no
> luck.
> I currently have the 9v battery removed and will put in a replacement and
> try
> the reset again.
> I've heard there is another type of reset that might be worth trying?
> Any
> ideas along this line would certainly help!  Second question, does this
> radio
> require the 9v battery for the frequency and date/time display work?
> If it were mine it would already be boxed up and on its way back to
> Tennessee.
> However, this belongs to another person and I would like to try
> everything
> before I recommend it go out.
> Contact me directly if you wish: w5en at hotmail dot com
> 73 de W5EN Steve
>
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