[TenTec] Paragon 585 troubleshooting

[Vic Klein]

If the rig is not maintaining memories when the rig is off AND the power
supply is on, then the problems are beyond the battery question. It should
not even need a battery to retain memory in that situation, so something is
wrong elsewhere. Since you mention corrosion on the logic board, I'd look at
the schematics and trace where power comes from to keep the memory ICs
active and see where it is being interrupted. Good luck!

 

=Vic=

WA4THR

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To:                   Discussion of Ten-Tec Equipment
<tentec at contesting.com>

Subject:            Re: [TenTec] Paragon 585 troubleshooting

From:               Joe Hetrick <jhetrick at bitjanitor.net>

Reply-to:          Discussion of Ten-Tec Equipment <tentec at contesting.com>

Date:                Thu, 27 Apr 2017 06:06:49 -0500

List-post:          <tentec at contesting.com">mailto:tentec at contesting.com>

 

On 27 Apr 05:55, Vic Klein wrote:

> Do a search in the archives here for Voice Board. There is a Ten Tec mod
to

> the voice board to install a diode to prevent the battery from running
down,

> while boards that were originally in Omni V and VI radios may not have had

> that. You can test by just removing the board for a while to see if your

> battery stays up.

 

Yea, that's on the list, but, the issue at the moment is that regardless
(with 

supply voltage on, rig off, fully charged backup battery) memories/etc are
not 

retained if rig is powered off.

 

> 

>  

> 

> I gather you are aware also there was a later revision to the Paragon that

> provided a charging voltage for NiCd batteries, which could cause a
problem

> with Alkalines. Are you saying you see 12v on the battery terminals when
the

> rig is on?

 

Yes; I see shack supply voltage levels on the 9V terminals.  This seems to
be 

whats expected (but somebody could confirm..) based on something I ran
across 

somewhere.  This rig should have the charging circuit.  Even if it doesn't,
the 

fact that battery backup stopped functioning is annoying, at best.

 

Thanks,

 

Joe

 

KC0VKN