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@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@contesting.com] On Behalf Of Jeff
> (W4DD)
> Sent: Tuesday, September 26, 2017 4:53 AM
> To: Discussion of Ten-Tec Equipment <tentec@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@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@contesting.com] On Behalf Of Peter
> Frenning [OZ1PIF]
> Sent: Monday, September 25, 2017 5:15 PM
> To: Discussion of Ten-Tec Equipment <tentec@contesting.com>; Steve
> <sswhite@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 **
> ** that doesn't suck is probably the **
> ** day they start making vacuum **
> ** cleaners ! **
> ** -- Anonymous Wise Guy **
> ******************************************
> email: peter(no-spam filler)@frenning.dk
> http://www.frenning.dk/oz1pif.htm Ph. +45 4619 3239/ +45 2332 9464
> Snailmail:
> Peter Frenning
> Ternevej 23
> DK-4130 Viby Sj.
> Denmark
> ******************************************
>
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