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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I needed to do something about it!
I soldered a 22 solid wire to each of the battery holder pins, then glued the holder to the DS case using model airplane plastic cement. You did a great job! For anyone who attempts this mod Great remanufactured chip I replaced my RTC chip in my Compaq Deskpro s with one of these sold by ericchungelectronic and it works perfectly.
Dallas DS1287 DIP Real Time Clock 3pcs
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. Don’t ever solder directly on a coin-style Li-Cell.
Problem with any DS is that they haven’t been made in years. See all 2 brand new listings. Have a look at the graphics below. What do I have to worry about in terms of counterfeits and old stock? The suggested implement to open these modules is a Dremel tool. The time now is Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag.
Bookmarks Dalllas Digg del. If you aren’t afraid to get somewhat violent with daklas modules, you will find that inside the module itself is nothing more than a clock crystal, button cell battery and the DS, which is used in some systems with an external battery and clock crystal. All described modifictions apply to this chip as well.
If you follow his procedure, you’ll probably do fine. After the dust cleared I started with a sharp knife to make the initial cuts and followed them up with by running the jaws of a needle nose pliers into the cuts. While this one didn’t solder as nicely and had to be resoldered once when the positive lead came unglued! I used a medium sized flat file Every time I booted up the machine, I was greeted with the errors above.
Along with the real time clock this chip also holds the CMOS battery, all entombed together in a compact plugin unit. The only things you need to do is: It won’t do it no good and may result in early death of that part due to excessive internal heating. Should work like a charm. Originally Posted by DOS lives on!! A couple weeks ago when I finally got around to hooking it up This item doesn’t belong on this page. Not sure how long these will last, but I have 3 now so if the batteries do die in them again, they can be modified.
I’m going to have to give the hack a try. Worked like a charm and would like to thank you and I am very grateful I stumbled on your web site.
Ratings and Reviews Write a review. To this day, it’s still chugging along. Then circumstances kept me from working with it until now Booting up with the reference disk, setting the configuration and clock then rebooting showed the fix worked perfectly!
Possible Results Reworked chip inside a Mod. All power to the Internet and particular thanks to Peter.
After making sure the solder was firmly connected it was a matter of inserting a 3v lithium button battery into the holder photo 3replacing the chip on the ds1278 and screwing the PC cover back on. This worked very well and allowed me to put the batteries in a location where they’d be easier to change.
Curiosity killed that cat.
Soldered and used a CR battery with holder on top of the It isn’t daallas soldering job to be proud of and it’s not too pretty but the connections are quite secure. You may have even read of people doing exactly this, although most accounts I’ve found don’t say just how this is done.
William Walsh did the DS-Rework to get an external battery to it as well. Soldering was the next big thing.
Fixing a Flat Dallas DS Real Time Clock Chip
I went through five or six DS modules before deciding that this method wasn’t going to work for me. Thread Tools Show Printable Version.
On March, 23rd, Chris xrisl [at] yahoo. Rather neat perhaps, until the battery goes flat in which case the whole chip needs to be replaced! Go to his page now and read up on the subject.