An email or phone call to Tentec could save a lot of investigation.
Carl Moreschi N4PY
121 Little Bell Drive
Hays, NC 28635
www.n4py.com
----- Original Message -----
From: "Martin Sole" <hs0zed@csloxinfo.com>
To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>; "'N4PY2'"
<n4py2@earthlink.net>
Cc: "'ROD'" <w3krq@dejazzd.com>
Sent: Saturday, October 16, 2010 11:30 AM
Subject: Re: [TenTec] Orion resets at every power up
And some more,
The schematic I have calls out an M48T35AV, a combined 256K SRAM real time
clock, power fail control circuit and battery. Fitted to my radio is an
M4T28, a 48mAh battery and crystal. Ha, but pulling it off reveals the
M48T35AV underneath. The plot thickens. Reading the data sheet now.
Martin, HS0ZED
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of Martin Sole
Sent: 16 October 2010 22:20
To: 'N4PY2'; 'Discussion of Ten-Tec Equipment'
Cc: 'ROD'
Subject: Re: [TenTec] Orion resets at every power up
DSP/CPU board, U501, Yellow oblong, ST device marked C996160215,
M4T28-BR12SH1, Timekeeper Snaphat Lithium Battery.
Looks like it's plugged in to a 16 pin DIL holder designed to be mounted
SMD
style.
Now to find it in the schematics. Unlikely I can find a source locally if
it
should turn out to be the problem.
BTW, checked the 5 volt supply and it measures 5.06 volts at the output of
the regulator board so I guess that is okay.
Martin, HS0ZED
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of N4PY2
Sent: 16 October 2010 22:08
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Orion resets at every power up
That's definitely not the case. I just can't remember exactly where the
battery is located.
Carl Moreschi N4PY
121 Little Bell Drive
Hays, NC 28635
www.n4py.com
----- Original Message -----
From: "ROD" <w3krq@dejazzd.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Saturday, October 16, 2010 10:56 AM
Subject: Re: [TenTec] Orion resets at every power up
I think they are using a chip with a built in battery
--------------------------------------------------
From: "Martin Sole" <hs0zed@csloxinfo.com>
Sent: Saturday, October 16, 2010 10:44 AM
To: "'N4PY2'" <n4py2@earthlink.net>; "'Discussion of Ten-Tec Equipment'"
<tentec@contesting.com>
Subject: Re: [TenTec] Orion resets at every power up
Okay, now I'm really confused! I'm looking at the V2 sweep mod
document and have my 565AT in bits in front of me. Cannot for the
life of me identify a battery anywhere on either the document or the
hardware on my bench. Huh, what gives? Where exactly is this battery?
Lets try and narrow it down to a specific board first:
DSP/CPU
Display
Left side front panel
Right side front panel
Maybe I'm being dumb here but nothing I can see looks anything like a
battery I've ever seen before.
Thanks
Martin, HS0ZED
-----Original Message-----
From: tentec-bounces@contesting.com
[mailto:tentec-bounces@contesting.com]
On Behalf Of N4PY2
Sent: 16 October 2010 21:14
To: Martin Sole
Cc: tentec
Subject: Re: [TenTec] Orion resets at every power up
It's in the front panel of the Orion. It's a coin cell. See the
description on the tentec website for how to do the version 2 sweep mod.
This description shows how to get to the battery. The battery is
what keeps the non-volatile RAM alive. Changing it should fix your
problem.
Carl Moreschi N4PY
121 Little Bell Drive
Hays, NC 28635
www.n4py.com
----- Original Message -----
From: "Martin Sole" <hs0zed@csloxinfo.com>
To: "'N4PY2'" <n4py2@earthlink.net>; "'Discussion of Ten-Tec Equipment'"
<tentec@contesting.com>
Sent: Saturday, October 16, 2010 10:06 AM
Subject: RE: [TenTec] Orion resets at every power up
There's a battery? Who'd have thought. I know it says battery
failure when doing a RAM clear but had assumed (ha) it was just a
way of saying that the process had taken place. Maybe standard
device text.
So where is the battery? Not on the CPU/DSP board. What is it's
function?
Which schematic is it on? Coin cell? What expected life? Hopefully
changing requires no special procedure. Who knows? Questions
questions??!!
Thanks
Martin, HS0ZED
-----Original Message-----
From: tentec-bounces@contesting.com
[mailto:tentec-bounces@contesting.com]
On Behalf Of N4PY2
Sent: 16 October 2010 19:11
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Orion resets at every power up
There's a battery behind the front panel of the Orion. It may need
to be replaced. Follow the old instructions on the Tentec site for
how to modify the Orion for the Version 2 sweep to get to the
battery.
Carl Moreschi N4PY
121 Little Bell Drive
Hays, NC 28635
www.n4py.com
----- Original Message -----
From: "Martin Sole" <hs0zed@csloxinfo.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Saturday, October 16, 2010 2:10 AM
Subject: [TenTec] Orion resets at every power up
After being able to load software into the radio again, not sure if
it was PC serial port cable or connectors but it's okay now, I'm
now seeing that at almost every power cycle the radio does a master
reset. The sequence of events is as follows:
Radio off
Power up and master reset complete appears
Radio boots but has unusable audio
Power down followed by power up again about 5 seconds later radio
starts normally
Power off and leave for a short while, sometimes only 20 seconds or
so, power up again causes master reset
Needless to say this is frustrating.
RAM clear and forced master reset do not appear to have helped.
Is it a 'known' issue?
Thanks
Martin, HS0ZED
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