[TenTec] Omni V backup battery

[Bernie Skoch]

Wolfgang,
Looking at the Omni V schematic, the battery feeds two chips on the Logic board: U7 (which appears to be the main microprocessor) and U11, which converts TTL to RS232.
I wonder if you have anything plugged into the serial port which might be drawing it down. If not, I would look at U11 and its ancillary components first.
Have you measured current draw on the battery?
73,Bernie K5XS


-----Original Message-----
From: Doug Gomez via TenTec <tentec at contesting.com>
To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
Cc: Doug Gomez <gdoug29 at yahoo.com>
Sent: Thu, Jun 16, 2022 9:37 am
Subject: Re: [TenTec] Omni V backup battery

 I get around 2 years for the clock battery in my Omni V.
    On Thursday, June 16, 2022, 02:09:24 AM PDT, Wolfgang Peringer <dk7cy at bingo-ev.de> wrote:  
 
 Hello,

i noticed that the backup battery in my Omni V discharges within 6 to 8 
weeks. The batteries in my Omni VI and VI+ hold their voltage for years. 
Any ideas?

73

Wolfgang

dk7cy

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