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Author Topic: Coin battery replacement kits/sets/parts  (Read 7409 times)

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Offline VingtTrois

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Re: Coin battery replacement kits/sets/parts
« Reply #14 from previous page: August 01, 2010, 08:50:47 PM »
Quote from: Cosmos;572999
1N4148 of course !


Merci M'sieur!

Quote from: Zac67;573000
Any will do - voltage and current are so low that you won't be able to find an undersized diode.

A Germanium type (lower voltage drop) will have the advantage of allowing the battery to power the RTC for a longer time before replacement is necessary.


Thank you.
Diode are so small that I had trouble finding their names! :D
-A3K(T)040@35MHz/78MB/KS3.1/OS3.9/Buster11/PICASSO II/GVP IO/A2088XT/DENEB/HDD18GB
-A3K(D)030@25MHz/134MB RAM/KS3.1/OS3.9/Buster11/RETINA Z2/OKTAGON 2008/VLAB YC/MIDI/DKB3128/HDD18GB
-A2K/ROM 1.3-3.1/2MBCHIP/8MB/A2091/OKTAGON 2008/A2058/TANDEM IDE/FlickerFixer-Scandoubler/Genlock
-A1200/KS3.1/2MB+9MB/CF2GB A1200[/
 

Offline LoadWB

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Re: Coin battery replacement kits/sets/parts
« Reply #15 on: October 31, 2010, 01:21:13 AM »
Quote from: quarkx;530284
It may be a fine kit, but it doesn't hold a candle to DJ Base's kits. Here to Canada, it was actually less to order them in from Germany then the US.
Below are the pictures from my A2000, A3000, and A4000. you can see how good it looks.


Nicely done.  I just did my 2000 tonight after pulling it from the shelf for its first annual inspection since 2006.

I replaced R803 with an 1N914/1N4148 switching diode (RadioShack #276-1122.)  As mentioned elsewhere, this prevents the charging circuit from attempting to charge the replacement battery.  The replacement battery is a CR-2032 in the appropriate spring-loaded holder with three pins.  Unfortunately, the spacing of the positive pins do not match the old NiCD.  A CR-2016 holder might.

The battery shows 3.44V, while the cathode side of the diode shows 3.03V, for a voltage drop of .41V.  Less than a silicon diode, but more than what I would like.

The attached pictures are the results of my handy work.  First is the solder side of R803 and the battery holder.  Second is the component side of both.  Lastly, the back of the battery holder showing the mismatched spacing of the positive pins.