Dave,
My OMNI V is I think an '89 production (s/n 63A10699), and like yours has the
8-pin U8 RAM. The hold-up battery is an easily replaceable 3v CR2032 Lithium
which I replaced about 2 years ago when the "time" went volatile. To be honest,
I don't recall whether or not any other RAM data (other than "time") went
volatile. So, we may be two fortunate OMNI V owners that aren't faced with the
piggy-back baterry/RAM kluge. Life is good....
Allen--W7GIF
----- Original Message -----
From: David and Dianne on Comcast<mailto:dhhdeh@comcast.net>
To: Ten Tec Reflector<mailto:tentec@contesting.com>
Sent: Thursday, February 12, 2015 3:51 PM
Subject: [TenTec] OMNI 5 GOES DEAD ON 40
Hi All,
Confused I am.
I am the original owner of a 24 year old Omni V.9
from 1991, a last production run unit. It still
runs beautifully.
On my logic board in the Omni V.9 the NVRAM chip
is identified as U8 and id'ed as a X2404P on both
the schematic and on the top of the chip itself.
No manufacturer is named on it.
It is only an 8 pin chip and does not physically
resemble the chip shown on several of the links in
this thread in the past few days.
It is a thin chip as with others on that board and
with no apparent "battery bulge" on its top
surface. On the schematic, pin 8 of the chip is
Vcc taking +5V from the radio off of the logic board.
Am I missing something here? Could TT have
changed this chip in a later production run of the
logic board? Why has it not failed after 24 years
if it's life expectancy is +/- 10 years?
Info and any speculation appreciated.
BTW as asked earlier, what functionality is lost
if there is a battery in it and it fails.
Thanks,
73 de N1LQ-Dave
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