IBM PS/2 Model 55 SX Repair and Tour
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- čas přidán 5. 03. 2022
- Watch me get this old IBM PS/2 55 SX working.
Spec:
386sx
4Mb RAM
60Mb HD
Micro-channel Architecture (MCA).
IBM DOS 5.02
Thanks to Necroware for the Dallas Chip mod guide:
• Revised: Repairing Rea...
Thanks for Adrian's Digital Basement for the Mitsubishi floppy drive servicing guide on this video:
• The IBM PS/1 was the f... - Hry
That Gorillas sound will remain stuck in my head forever :)
Totally with you on that.
Picked up one for myself. Not sure if I over paid but I really like the machine. Needs a new battery though.
hey by chance do you have the system configuration files available for download or the setup configuration that you could maybe share with me? im trying to get mine working and i have the same error but i have no operating system to give the machine unfortunately im not able to find it online at the moment just reference disks...
Literally picked one of these up in an amazing condition from the Dump. I am very sure it needs that coin cell upgrade, but, does it need it to be able to progress to the reference disc? What disc did you use? One from the internet or one that came with it? Thanks
If its the same model, then you'll need a reference disk to set up the hardware after the coin battery fix. I download the disk image from www.ardent-tool.com/disks/
then burned it onto a disk with a USB floppy drive on my modem pc.
@@BenDoughty50 Ok, good to see we are using the same site. Just to make sure, until you did the coin cell fix, it wouldn’t even recognise the reference disc, right? Thanks for your reply
@@AdminFrank It should recognise the reference disk anyway. Its just that it won't be able to save the settings when powered off and will need the reference disk to configure on every boot. The disk drives for these things are notoriously temperamental. I'd recommend lubricating the motor, the head guide and worm screw as a first port of call, if it's not reading a disk.
Nice video. Just bought a ps/2 55sx. Won't even get to post. No beeps and so lights on keyboard when pressing NUM lock and caps. Nothing on screen.
I'm going to order another Dallas chip first. Swapping ram had no effect. If you have any other suggestions that would be great. I subbed.
If there's no power at all it won't be the Dallas chip. Try removing all cards, then powering up, just to make sure there's no fault on any of them. If not, then you could do with testing the power supply. It could also be a blown tantilum capacitor on the motherboard. I've seen Adrain's Digital Basement fixing these on old IBM machines on his channel. I think they tend to be physically blackened when they blow, so you might be able to spot it by just looking.
@@BenDoughty50 sorry I should have mentioned that it does power on, hard drive spins then sometimes stops. Keyboard lights blink on initial power up.
That's a good start then. Like I say, try removing all the MCA cards, and disconnect the harddrive. It should post even with none of these connected. It could still be a capacitor, so still worth checking that.
@@BenDoughty50 Yer I did all that. The through the whole caps visibly look fine, are the ones you mention surface mount. I have not looked at any surface mount components yet.
Sorry, my apologies. There aren't any tantalum capacitors on this mother board. There are a few on the MCA riser though. They are the yellow, through hole ones. They look like a blob. I'd recommend watching Adrian's Digital Basement or Necroware for diagnosing low level motherboard issues. Apart from swapping out a few capacitors, it's a bit beyond my skill.