home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky comp.sys.ibm.pc.hardware:20235 comp.sys.ibm.pc.misc:10822
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!crdgw1!rdsunx.crd.ge.com!ariel!davidsen
- From: davidsen@ariel.crd.GE.COM (william E Davidsen)
- Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.ibm.pc.misc
- Subject: Re: How do you replace a motherboard?
- Message-ID: <1992Jul24.184200.27714@crd.ge.com>
- Date: 24 Jul 92 18:42:00 GMT
- References: <d91-fad@tekn.hj.se.3.711909782@tekn.hj.se> <1992Jul23.192530.16445@sura.net>
- Sender: usenet@crd.ge.com (Required for NNTP)
- Reply-To: davidsen@crd.ge.com (bill davidsen)
- Organization: GE Corporate R&D Center, Schenectady NY
- Lines: 47
- Nntp-Posting-Host: ariel.crd.ge.com
-
- In article <1992Jul23.192530.16445@sura.net>, wbarnes@sura.net (Bill Barnes) writes:
- | [Let's try a different approach to this problem, since my last attempt
- | got me zip...]
- |
- | A friend of mine owns a 286-12 and wants to upgrade to a 486. One option
- | he's considering is replacing the motherboard so he can still use all
- | his old hardware (HD, floppy, monitor - everything but the memory).
- |
- | So the question is, how does we replace it? Does anyone have suggestions,
- | tips, advice, whatever on where - and what - to look for a new motherboard,
- | how to swap boards and equipment, etc.? Any magazine articles or books
- | on the subject out there? Any big pitfalls we should be aware of?
- | If we take this option, we're hoping it'll be fairly straight-forward:
- | take out the old motherboard, screw in the new one, pop the cards back
- | in, and - Voila! - you're ready to go. Somehow, though, I suspect it will
- | be more difficult than that...
-
- You pull the cards, unplug the power leads and any spare connectors
- like reset, remove two screws, slide the board to the left and lift.
- Reverse to install the new board. The go into the BIOS and set the bus
- for the slowest speed, most wait states, etc, plug in the video only,
- and try a boot. If you get POST diagnostics on the screen, power down
- and add the floppy controller and try a DOS boot. Don't connect the
- hard drive yet! Then add the rest of the stuff *one item at a time* and
- test.
-
- If all goes well you can cautiously start removing the wait states and
- speeding up the bus. Be careful, the first sign of a bus speed problem
- is often a corrupted hard drive. You DO make a backup before changing
- the motherboard. I suggest the free BRIK program be used on all your
- files before starting and after changes. That catches any problems you
- get from undetected HD errors.
-
- This works pretty well, the only problem you MAY run into is CPU
- overheating. Because the case may have been designed for a CPU in
- another location, and certainly a lower power CPU, airflow may not be
- adequate. If you can find a glue on heat sink to put on the 486 it's a
- good idea (in any case). Just use thermal glue, others don't work as
- well.
-
- You will not get full benefit from the 486 with old slow peripherals,
- but that doesn't mean you won't notice a boost in performance!
- --
- bill davidsen, GE Corp. R&D Center; Box 8; Schenectady NY 12345
- It never ceases to amaze me that otherwise rational people, able to
- understand calculus, compound interest, and the income tax form, can
- continue to believe that poker is a game of chance.
-