[TenTec] Omni VI+

[Wade Staggs]

*That was a good bit of advise on the Low Pass Filter Board Joe. Mine was
the small Pin Diodes that drive the relays. Mine had a really high SWR and
pulled WAY TOO MANY AMPS on transmit. If the rig is on a known good Dummy
Load with a known good Jumper, and the SWR Meter in the rig shows the SWR
to be High. You can pretty much be guaranteed that the Low Pass Filter
Board has problems. I just wanted to add that the small Pin Diodes on each
set of Band Relays, sometimes Short and cause problems also. If one
particular relay is staying closed, when it should be open? Well, you get
the idea. Check those tiny little diodes ......... Hope we have been of
some help. *
*                                    73 from Wade/KJ4WS*

On Wed, Jul 8, 2015 at 11:54 AM, Joe Papworth via TenTec <
tentec at contesting.com> wrote:

>  Paul, et al,
> If you do determine that it's a bad relay, here's a write-up I made for
> myself that will speed up the repair. By the way, don't try to figure out
> which one of the pair is bad. Just change 'em both.
>
>
> Ten Tec swaps them all out when they have a bad one. I can't see benefit
> to doing that cuz who's to say how long the "new" ones have been sitting on
> a shelf somewhere.
>
>
> I only swap out the pair for the failing band(s) and most of my relays are
> still the 18-year originals.
> Some of the replacements have had to be replaced again.
>
>
> Removal of the Omni VI Plus Low-PassFilter Board
>
> 1)Remove the top and bottom covers.
>
> 2)Remove the bottom “inner cover.”
>
> 3)Remove the top “inner cover.” (It’s along the back of the unit and
> includes thespeaker plate)
>
> 4)Unplug J13 and J17, and remove the 3 screws at top the edge of the board.
>
> 5)Turn the unit over and unplug J8 and J14, and remove the 3 screws at the
> bottomedge of the
>     board.
>
> 6)Cut the ty-wrap holding the J14 harness and the J17 coax. Also remove
> thenearby double-
>     sided tape.
>
> 7)With the rig still upside down, remove the board far enough to unplug
> J12 andthen
>     J7, J9, and J11.
>
> Note:To work on the board (i.e. Replace relays, etc.) the white coaxes can
> be leftin place.
>
>
>
>
>
>
>
> -----Original Message-----
> From: Mike Bryce <prosolar at sssnet.com>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Sent: Wed, Jul 8, 2015 11:45 am
> Subject: Re: [TenTec] Omni VI+
>
>
>
>
> I’d check the output filters. The relays have a tendency to go kaput. If
> you can
> monitor DC input current, that would be helpful. If you’re drawing 15 amps
> and
> getting 10 out, then output filters would be a good place to start.
>
> You didn’t mention if it was on one band or all bands.
>
> Try using the separate antenna input to see if your receiver comes back.
> That
> jack bypass the filter board and swr/alc board.
>
>
>
> Mike Bryce WB8VGE
>
>
> “The trouble with quotes on the Internet is that you never  know if they
> are
> genuine”
>
> —Abraham Lincoln
>
>
>
>
>
>
>
> > On Jul 8, 2015, at 8:08 AM, Dave Edwards <kd2e at comcast.net>
> wrote:
> >
> > All bands?
> >
> >
> >
> >
> > On 7/8/15 12:31 AM, Paul DeWitte wrote:
> >> A couple of days ago while in QSO my Omni VI+ lost both rcv and
> TX.
> >>
> >> Into a dummy load it shows about 5 watts reflected with about 10
> watts
> >> drive. I tried this with 2 different dummy loads and 2 different
> >> meters, plus on the meter on the radio in the SWR position all
> same
> >> results.
> >>
> >> Until this happened, it had worked flawlesly for years.
> >>
> >> It is like a short across the output/input. Has this happened to
> >> anyone on here? Or have an idea what the problem could be?
> >>
> >> At $110 per I am not anxious to donate to the TT relief fund if I
> can
> >> fix it myself.
> >>
> >> Thanks, 73
> >> Paul K9OT
> >> _______________________________________________
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> >>
> >
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> >
>
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