"Lynn Coffelt" wrote in message
. ..

"Mike" wrote in message
...

"Lynn Coffelt" wrote in message
...
Case in point. Uniden Bearcat BC890XL's memory battery life just
a
couple of weeks.
I've run into situations like this with other equipment in the
past,
and there was always a "fix" or mod.
Looking everywhere that I can, I've seen no problems mentioned
with
this particular scanner.
Has anyone heard of this one, or better yet, got a mod or fix?
Lynn



I think the memory battery is a CR2032.....should measure 3 volts.
Yours
is
probably shot, as the owner's manual states the battery should retain
the
memory for 5 years. That may be stretching it some, but it should
certainly
hold for longer than 2 weeks. That's where I would check.

Yes, you're correct, it is a shot battery, but a new CR2032 (after a
battery holder was installed) only lasts a week or two. Several battery
changes and same result.
Originially, the battery was a PCB mounted, solder-in type, and for a
while, I soldered new batteries in, and then later added the battery
holder
(socket) to make it easier.
If I was only smart enough to write down the stored frequencies
before
they evaporated again, it wouldn't be so aggrivating..... sob.

Lynn



It could be quite a few things, but I'd take a look at C508, a 33uF tant
capacitor (may be leaky). It connects to ground, from the positive side of
the back up battery, through a 10K resistor (R509) and D508. C509, a .047
uF cap is in parallel with C508 also.