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
>
>
>
> =Vic=
>
> WA4THR
>
> ----------------------------------------------------------------------------
> ------------------
>
> To: tentec@contesting.com
>
> Subject: [TenTec] Paragon 585 troubleshooting
>
> From: Joe Hetrick <jhetrick@bitjanitor.net>
>
> Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
>
> Date: Wed, 26 Apr 2017 18:15:02 -0500
>
> List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
>
>
>
> Hey folks,
>
>
>
> I recently acquired a 585 that has some troubles. When I received it was
>
> suggested I replace the 9V internal battery to revive the memories and such.
>
>
> Upon inspection I discovered that the 9V hardness was corroded away due to
> the
>
> leakage of the 9V nicd in the rig, and there was a great deal of corrosion
> on
>
> the board.
>
>
>
> Knowing I'd have to tackle the damage to the board and a handfull of IC's
> at
>
> some point, I made a note and dropped in the new nicd cell.
>
>
>
> Rig worked fine for a couple of weeks, then, the cell ran down. I
> replaced
>
> it with an alkaline, which I had on hand, knowing the danger and made a note
> to
>
> get a new nicd. That too ran down in a couple weeks time. I assumed that
> with
>
> the first rechargable I put in, the charging circuit must be damaged from
> the
>
> previous battery leakage.
>
>
>
> At this point, I had another charged nicd to replace the alkaline with and
> I
>
> put it in to discover that memory status wasn't restored between power
> cycles..
>
> So, I left the nicd in, rig running for a day, and then left the rig
> connected
>
> to live power for another day. No change. Checking the nicad shows a
> charged
>
> battery with 9V nominal.
>
>
>
> If I check the voltage at the 9V connector, I see supply voltage, so,
>
> something else is amiss.
>
>
>
> I think I have two issues: damage to the main board due to cell leakage,
>
> likely leading to the second issue. Looking around, I'm assuming I'm not
> the
>
> first person to have one of these with damage of this nature--what have
> peoples
>
> experiences been cleaning these up and rehabbing them?
>
>
>
> The run-downs are also interesting, and i see that there was a mod (a
>
> description of the symptom, but not the mod itself) where the voice board
> would
>
> cause the battery to drain; how can one tell if that mod has been performed,
>
>
> and, what exactly is it?
>
>
>
> Anything else anybody might add I should look for? Rig has the Geihl chip
> in
>
> it, and, everything else seems to work OK, outside of the obvious damage and
>
>
> issues with the thing keeping its wits between uses.
>
>
>
> 73
>
> Joe KC0VKN
>
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