Well – these have the dreaded Dallas DS “all in one” Real Time Clock (RTC) chip with integrated Xtal and battery. Now the battery is dead, configuration is. FEATURES. ▫ Drop–in replacement for IBM AT computer clock/calendar. ▫ Pin compatible with the MCB and. DSA. ▫ Totally nonvolatile with over Dallas DS, DS and Compatibles – External Battery Rework Advice. The following is some extra information that you might find useful if you plan to.
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While this one didn’t solder as nicely and had to be resoldered once when the positive lead came unglued! It doesn’t take too long to figure out that the DS and other, similar modules could be re-energized with a new battery. On March, 23rd, Chris xrisl [at] yahoo.
After these pins dallaa exposed, breaking the connection to the internal battery was easy. I discovered that the RTC chip was dead.
I just want to tell you that I succesfully used your DS rework How-to. Whatever you do, handle the pins on the module carefully. If you follow his procedure, you’ll probably do fine. It involved hacking away parts of the chip, then rewiring an external battery onto it. They have a tendency to bend when you aren’t looking. Up for sale is one piece DS However the process is not always quite so hassle-free.
In the event of a battery failure, the holder can be placed away from the sensitive planar or other circuitry. To give the newly reworked module some more strength, I used hot glue to secure the battery leads and holder inside the system unit. That usually ends the experiment before you’ve even arrived at the part where the module is exposed to the blistering heat of your soldering iron. Who’s a reliable source and who’s not?
Ordinarily, there’s a lot to like about the Dallas clock modules. It could start a fire, explode or just make a smelly mess.
Unless of course you’re like me and have more bad luck than you should when things come down to the wire. I know the DS is a newer replacement, but is it still in production?
The time now is What daloas I have to worry about in terms of counterfeits and old stock? Throughout their lifetime, they do keep good time.
Dallas DS, DS and Friends – Rework Advice
Go to his page now and read up on the subject. I could not have gotten my Compaq DeskPro e back to clock life back without you! After the dust cleared The usual reason for dalla errors is a flat CMOS battery. Possible Results Reworked chip inside a Mod. Thank you very much for putting this mod on your web site.
Most likely you won’t get a wire soldered properly to it. Their lifetime is also quite long. This item doesn’t belong on this page. I found the hack much easier to perform.
Dallas DS1287 DIP Real Time Clock 3pcs
Incidentally, my computer is an Compaq N, which seems to date from about I found the substrate quite soft and easy to cut into. Attached the two wires to the exposed pins and put the new lithium cell in the holder. What’s the date code on yours? There are lots of old threads here on DS replacement.
When you get past the potting compound and into the terminals, clear away just enough potting resin to catch the negative battery terminal heading up to the top of the package. Now the battery is dead, configuration is lost after relatively short time again and you get error-codes constantly.
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