Issue with Compaq Deskpro 5133
Posted by Dramatic_Homework668@reddit | retrobattlestations | View on Reddit | 8 comments
Gidday everyone!
I have a Compaq Deskpro 5133 and for some reason I have started experiencing some very annoying issues a couple of months ago. Whenever i power on the Compaq, it turns on, does the Kilobyte check thing and then it shows me 3 errors: 1155-System Board Comm Port Address Assignment Conflict, 601-Diskette Controller Error & 611-Primary Floppy Port Address Assignment Conflict. Now I left it powered off for around 1-2 months then powered it on again and the issue seemed to have gone and it was working again. I then tried restarting it and then got the same error again. My computer doesn't have a bios as i have tried pressing both f10 and del and nothing happens, I'm guessing it requires some kind of BIOS floppy or something but that wouldn't really be possible to boot into with these errors because the floppy drive won't work when it gets these three errors. I also tried removing the sound card but still nothing changed.
I really do hope somebody can help me because I paid big bucks for this computer.
Cheers
Samuel
EDIT: I also cleared CMOS
74LS00@reddit
Yes, you need to boot a floppy disk to configure the BIOS settings on these.
Have you changed the CMOS battery itself? I recall it was a coin cell soldered directly to the mainboard, but you can change that to a holder and put a CR2032 in there. Not sure if that is the root cause of your problems, but it should be dealt with regardless.
Dramatic_Homework668@reddit (OP)
I have found these two, do they look right?
https://www.jaycar.co.nz/cr2032-vc-3v-pcb-mounting-lithium-coin-battery/p/SB1762
https://www.pbtech.co.nz/product/SEVOEM0259/CR2032-2032-Battery-2Pin-2-WIRE-CABLE-Plug-for-Lap
74LS00@reddit
I was thinking of a battery holder like this https://uk.rs-online.com/web/p/battery-holders/2378372
Dramatic_Homework668@reddit (OP)
would this work as a cmos battery replacement? https://www.pbtech.co.nz/product/BATPAN1054/Panasonic-CR-2032PG2B-Battery-3V-Lithium-2032-Lith
74LS00@reddit
Yes
Dramatic_Homework668@reddit (OP)
ahh ok, so I buy that and then a new battery right? Do you know how to remove the battery? I did find this forum but doesn't really explain how to remove the battery (https://www.vogons.org/viewtopic.php?t=40056)
74LS00@reddit
It is soldered in place, so you need to take out the mainboard and use a soldering iron to remove it.
Dramatic_Homework668@reddit (OP)
Thanks for your reply. No I haven't changed the CMOS battery but i did try removing it once to try and reset the CMOS that way but i have absolutely no idea how to take it out. Do you think that is the issue and do you know how to replace it?