[TenTec] Orion II Black Screen - Successful Repair

[Barry N1EU]

If anybody does repairs of this type, please take before and after photos
of the screen to add to the knowledgebase.

73, Barry N1EU

On Fri, Dec 16, 2016 at 12:22 PM, Gary F <dukeshifi at comcast.net> wrote:

> I have replaced the LED illuminators with new ones fro LCD Parts.
>
> I am told that the same illuminators are available more cheaply but I have
> had good support from LCD Parts and they offer a drive board that is easy
> to install.
>
> I've done two Orion's and five 756 Pro series with their devices with
> excellent results.
>
> The Orion only has room for the 100 mm LED stick.
>
> Gary
> W0DVN
>
> Sent from my iPad
>
> > On Dec 16, 2016, at 11:00 AM, denton sprague <denton at oregontrail.net>
> wrote:
> >
> > my Orion I has a fading display….LED illumination going south? if so,
> what is the easiest/cheapest fix?
> >
> >> On Dec 16, 2016, at 8:40 AM, Dukes HiFi <dukeshifi at comcast.net> wrote:
> >>
> >> The Orion 1 had LED illumination, one of the first Ham radios to do so,
> >>
> >> I have never needed to open an Orion 2 display but I doubt that Ten Tec
> would have stepped backwards this far unless they had a good reason.
> >>
> >> Perhaps so, though, since Orion 2’s  did not use the white pair of
> wires going from the power distribution board, the one that provided power
> for the LED control circuit. If the O2 display had on board high voltage
> generation on the CPU board (or on the display panel itself), that would
> obviate the need for this white cable.
> >>
> >> It is possible Ten Tec was not able to find a color LCD that used LED
> illuminators. If this was the case, then the LCD panel in use must have its
> own on-board high voltage generator because the 566 schematic does not show
> one and the LCD PWM driver from the 565 is missing from the 566. Thus it is
> highly probable that the color display has its voltage generator on-board.
> >>
> >> The person who found and repaired this gave us (myself at least) some
> very valuable information and did a great repair!
> >>
> >> Gary
> >>
> >> W0DVN
> >>
> >>
> >>> On Dec 16, 2016, at 7:02 AM, Bob K8IA via TenTec <
> tentec at contesting.com <mailto:tentec at contesting.com>> wrote:
> >>>
> >>> Steve,
> >>>
> >>> This is in the Orion II. I dont believe the Orion is a cfl backlit
> display. Others should verify. Tnx.
> >>>
> >>>
> >>> 73, Bob K8IA
> >>> Arizona Outlaws Contest Club
> >>>
> >>> <div>-------- Original message --------</div><div>From: Steve
> Ellington <steven4lq at gmail.com <mailto:steven4lq at gmail.com> <mailto:
> steven4lq at gmail.com <mailto:steven4lq at gmail.com>>>
> </div><div>Date:12/16/2016 5:40 AM  (GMT-07:00) </div><div>To: Discussion
> of Ten-Tec Equipment <tentec at contesting.com <mailto:tentec at contesting.com>
> <mailto:tentec at contesting.com <mailto:tentec at contesting.com>>>
> </div><div>Cc: BobK8IA at aol.com <mailto:BobK8IA at aol.com> <mailto:
> BobK8IA at aol.com <mailto:BobK8IA at aol.com>> </div><div>Subject: Re:
> [TenTec] Orion II Black Screen - Successful Repair </div><div>
> >>> </div>1,800 volts in an Orion!!! Better watch where you poke around!
> >>>
> >>> That board would be a good item for Orion owners to stock up on.
> >>>
> >>> On Thu, Dec 15, 2016 at 6:30 PM, bobk8ia--- via TenTec <
> >>> tentec at contesting.com <mailto:tentec at contesting.com> <mailto:
> tentec at contesting.com <mailto:tentec at contesting.com>>> wrote:
> >>>
> >>>>
> >>>> This is a follow up to my email below from 24 October 2016.
> >>>>
> >>>> As of 12/14/16, my Orion II is successfully repaired now, thanks to
> good
> >>>> friend Kevin W9CF. What had failed was some component(s) on the 12v to
> >>>> 1800v
> >>>> inverter board that powers the cfl backlight.
> >>>>
> >>>> A new inverter board (TDK CXA-L0612A-VJL which is DigiKey part #
> >>>> 445-1619-ND; about $23) has the radio up and running like new.
> >>>>
> >>>> http://www.digikey.com/product-detail/en/tdk-
> corporation/CXA-L0612A-VJL/ <http://www.digikey.com/product-detail/en/tdk-
> corporation/CXA-L0612A-VJL/>
> >>>> 445-
> >>>> 1619-ND/652720
> >>>>
> >>>> Thought some of you real techies would like to know this. Thanks to
> those
> >>>> of you that responded to me directly.
> >>>>
> >>>> 73, Bob K8IA
> >>>> Arizona Outlaws Contest Club
> >>>>
> >>>> -----------------------
> >>>>
> >>>>
> >>>> In a message dated 10/24/2016 8:15:20 A.M. US Mountain Standard Time,
> >>>> BobK8IA at aol.com writes:
> >>>>
> >>>> Gents;
> >>>>
> >>>> I am getting ready for our annual Multi-Two N7AT fun in CQWW SSB, this
> >>>> weekend. One of the op positions my Orion II. I turned the Orion II on
> >>>> and no
> >>>> screen appeared, just blank/black. The radio appears to be functioning
> >>>> fine
> >>>> but no screen. It does not appear to be power supply related.
> >>>>
> >>>> It worked fine two days ago (and generally trouble free since 2006
> when I
> >>>> bought it new). Latest firmware 3.033xe installed and RX-366. Battery
> was
> >>>> recently replaced.
> >>>>
> >>>> Any guidance you can give me. The radio is contest-unusable as is.
> >>>>
> >>>> TNX.
> >>>>
> >>>> 73, Bob K8IA
> >>>> Arizona Outlaws Contest  Club
> >>>>
> >>>>
> >>>> _______________________________________________
> >>>> TenTec mailing list
> >>>> TenTec at contesting.com
> >>>> http://lists.contesting.com/mailman/listinfo/tentec
> >>>>
> >>> _______________________________________________
> >>> TenTec mailing list
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