[TenTec] Orion problems

[Jeff (W4DD)]

I wouldn't worry abt signal path in this case.  I would look at cpu data
path.  The cpu is telling us it can't talk to certain peripherals.   We
need to figure out why.

An old trick: You might want to hit the board with some freeze mist and see
if anything changes.

I do wish the Orion had some diagnostic read/writes but that is not the
case, been there/done that (in a pevious life).


On Sep 26, 2017 9:13 AM, "Steve" <sswhite at mchsi.com> wrote:

> Voltages are good at the A( board but I will scope them this morning.  It
> has been recapped.  I checked the input to the Logic card of the both the
> main and sub receivers and can see them when I apply a 14.250 Mhz signal
> to the input.  However, the Sub Rx input level is quite a bit higher than
> the main Rx input level.
>
> I too am trying to find the signal path thru the logic board to find out
> why the boot sequence will not see the V2 mod.  The V2 Mod is one wire
> and two cuts.  I have checked it and the mod is there and correct.  .
> Probably should follow the signal path from the mod to the DSP's.  The
> previous owner told me he woke up one morning and the radio would no
> longer work...
>
> Steve NU0P
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Jeff
> (W4DD)
> Sent: Tuesday, September 26, 2017 4:53 AM
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: Re: [TenTec] Orion problems
>
> I would start by confirming voltages on the A9 board.  Also scope them.
>
> Then confirm they are getting to the dsp's.
>
> As I recall, the v2 mod is a single strap, but don't recall the details.
> I would focus on why the cpu can't read the strap.  I'll try take a look
> at the schematic tonight.
>
> Not sure if anyone has ever pubished the boot sequence but that would be
> handy.
>
> On Sep 25, 2017 11:57 PM, "Steve" <sswhite at mchsi.com> wrote:
>
> The A9 board has been updated.  Since there is output from the rcvr to
> the Logic board and no audio out of any kind it makes me wonder about the
> DSP and CODECS on that board.  I went and loaded Ver 1 software but that
> made no difference either.
>
> Steve
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Peter
> Frenning [OZ1PIF]
> Sent: Monday, September 25, 2017 5:15 PM
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>; Steve
> <sswhite at mchsi.com>
> Subject: Re: [TenTec] Orion problems
>
> Den 25-09-2017 kl. 22:31 skrev Steve:
> > Orion 1..Battery is good too...I wonder if I can put a 14 Khz
> > unmodulated signal into the DSP input  (J20) and find out if the whole
> > DSP chain is working..
> >
> > Steve
> Has anybody suggested checking out the A9 board? Any of a whole box of
> Gremlins can emerge from troubles there. When mine (O2) started acting
> erratically I updated the thre 470uF electrolics to lower ESR/higher temp
> ones, and all my troubles went away, many other similar experiences has
> been related here over time.
>
> --
> Vy 73 de OZ1PIF/5Q2M, Peter
>
> ******************************************
> ** The day Microsoft makes something    **
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