[TenTec] OMNI 5 GOES DEAD ON 40

[Carl Moreschi]

If the internal RAM battery fails, all the Omni V memories will be lost 
at power down.  For the Omni V.9, this means you would lose remembering 
the band stacking register values when you power off.

As long as power remains on the radio, no function would be lost.

I do not know if the chip was later replaced by tentec with a 
non-volatile RAM chip. But the clock chip with its internal battery was 
called an NVRAM chip back in 1993.

I don't remember but does the Omni V also have a 9 volt battery in it 
like the Paragons did?

Carl Moreschi N4PY
58 Hogwood Rd
Louisburg, NC 27549
www.n4py.com

On 2/12/2015 5:51 PM, David and Dianne on Comcast wrote:
> 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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