Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: Using I/O card to replace blown com ports?  (Read 1205 times)
W7XLR
Member

Posts: 38




Ignore
« on: November 28, 2002, 07:57:33 AM »

I got another computer to put my PK-232 on, a Pentium board, but it looks like the reason I got it free was because the com ports are blown. It won't work with a mouse and I have tried 3. One does work a little but works very erratic. I think the ports are static zapped. I see that I can turn off the onboard ports in Bios, I plan to try and put in a Serial I/O card to try and bypass this problem. Has anybody had this problem and did this work? I hate to have to turn it into a dos machine, then I will be where I started a PK-232 just sitting there!
Tnx
W7XLR
6M DM26
Logged
W7DJM
Member

Posts: 1




Ignore
« Reply #1 on: November 28, 2002, 06:55:01 PM »

Frankly, I find it a little tough to believe that ALL the com ports on one board are bolown up, but maybe so.

You might try this before trying that.

Pull the bios battery and or otherwise completely kill and reset the bios, then start all over on the settings.   I did have one old Belching Packward that I "cured" a "dead" IDE port this way.


You most certainly CAN do this.  You need to find a board with well documented jumpers so that you can enable/disable what you want, and avoid resource conflicts.


Also, I do have one Pentium 233 board with a "blowd up"  parallel port.  It has an aftermarket printer port card installed, works just fine.
Logged
K0JPJ
Member

Posts: 6




Ignore
« Reply #2 on: November 29, 2002, 12:26:49 AM »

I have had several boards lose their com ports due to
near hits of lightning coming through the modem....external modems I might add.  Even with all
the 'safeguards' they still get blown on occasion.  I
have used cheap two port replacement cards without any problems.  I had a source at ten bucks each but he went out of business.  

Only one motherboard had shorted so badly the replacement card didn't work.  Now my brother is
having similar problems wth USB ports since almost
every addon he has is USB.  Last time I was at his
home he had lost five broadband modems.....had them
stacked in a display!  Two printers, three mice, and
a digital camera.  

We do get a lot of lightning here!

73,

Frank K0JPJ
Logged
W7XLR
Member

Posts: 38




Ignore
« Reply #3 on: November 29, 2002, 10:00:19 AM »

Thanks for the reply's. It did have same problem. I'm starting to think it wants a real serial mouse and I'm looking for one. I tried Two PS-2 mice with a serial adapter I had and It would not see them, it did see a Marble mouse on the adapter but it does not work right. I just read that the adapter's work ok to connect a serial mouse to a PS-2 board but not a PS-2 mouse to a Serial board so I will look for a old serial mouse. After playing around with this more and more I think this may be the true problem? Will post later after I find one.
73
Logged
WA9SVD
Member

Posts: 2201




Ignore
« Reply #4 on: November 30, 2002, 03:23:23 AM »

Before you give up and pronounce the Com Ports DEAD, you need to consult the documentation for the motherboard, and MAKE SURE the connectors you are using between the motherboard and DB-9 or DB-25 are correct!  I have run into situations where the pin out on the motherboard is unusual, and naturally the Serial ports will appear dead!
    Also, be careful with adapters and mice or other pointing devices.  If hey are not SPECIFICALLY designed to be PS-2/Serial compatible, and you use an adapter, you CAN cause damage to the pointing device, serial port, or PS-2 port.
    The fact that some serial devices seem to work, or at least partly so seems to indicate a problem with the Com port set up, not the hardware itself.
    Good luck.
Logged
W7XLR
Member

Posts: 38




Ignore
« Reply #5 on: December 01, 2002, 11:04:04 AM »

OK, all done. It was the mouse, this board (socket 7) did not like anything other than a real serial mouse. Thanks for all the reply's.
73
Logged
W7XLR
Member

Posts: 38




Ignore
« Reply #6 on: December 01, 2002, 11:06:21 AM »

OK, all done. It was the mouse, this board (socket 7) did not like anything other than a real serial mouse. Thanks for all the reply's.
73
Logged
W7DJM
Member

Posts: 1




Ignore
« Reply #7 on: December 08, 2002, 11:35:38 PM »

The person making the point about the motherboard header to db9 flex cable/connectors  (motherboard header to "port") is correct.

ALSO  not just any serial mouse and just any ps2/serial adaptor will work.  I have 3 or 4 different ps2/serial adaptors, and one day I sat down and "ohm'ed" em all out.   I think there were at least THREE different wiring schemes.   The mouses/mice, also, have to be "right" to work this way.   BEST BET is to get a mouse/ps2 combo that you KNOW goes together.

You can test the ports with something like laplink, or an external modem and Hyperterminal.
Logged
NA4IT
Member

Posts: 872


WWW

Ignore
« Reply #8 on: December 22, 2002, 03:40:16 PM »

Just a word on PS/2 to Serial mouse adapters...all are not made the same. Seems as manufacturers are not staying with protocall. Last time I bought a serial mouse, Rad Shack was the only place that had "true" serial mice.
Logged
PATKARIUKI
Member

Posts: 1




Ignore
« Reply #9 on: February 28, 2003, 03:07:22 AM »

I have a similar problem (using a serial to ps/2 mice
adapter). But this is only a problem on some of the computers in my company, although all are running
on windows 2000.
With serial mice slowly getting replaced by ps/2 and
USB, I am forced to recycle old serial mice.
It is a real nuisance. Somebody please help.
And I am unwilling to spend money on a new
computer just because of a mouse problem!!!
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!