Building and testing a XT CF Card for the my IBM PS/2 - Difficult soldering!
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- Опубликовано: 3 дек 2024
- In this video I build a XT CF Card adapter for the PS/2 Model 30 to replace the hard disk.
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If you saw my video about the IBM PS/2 computer, you saw that the hard disk in it was very small and had a lot of bad blocks. This solves that issue. If I can get it to work!
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Hi, You should have started with the CF-card holder using a flat tip. It is not difficult, just put flux on the pins and put some solder on the flat tip and dragsolder. If you run out of solder just put a little solder on the tip and repeat until you're finished. After that clean your tip, put flux on any solder bridge and put your cleaned tip against the solder bridge then clean of your tip and repeat until the solder bridge is gone. When you're finished with the CF-card holder start with the through hole stuff. That way you don't damage anything (as you did with the parts close to the CF-card holder).
Exactly. And for removing excess solder you must have good quality solder braid!
Thank you. I got two more cards now. I'll try that on those
Hi Tommy, Thats a difficult soldering job. Nice to see it works Great to see you again. That IBM PS/2 is a nice item for your collection. Greetings from Steven from the Netherlands
Thanks 👍
Nice Work! Glad you got it working in the end.
I made this same card and it is tricky. Best to do socket/smd components before easier through hole parts for better access. I also bevelled the edge connector with fine sandpaper - if the PCB has a hard edge it can damage the ISA slot connectors when inserted.
Thanks for the info :)
Recently I bought the iX5 ULTRA preheater - soldering connector like CF is a piece of cake with that. As for the XT IDE, I prefer to choose the "XT-CF PIO8 (BIU offload)" variant; it seems to be faster. You may start the configuration utility from a DOS boot floppy, on the target machine, with the XT IDE card installed (if it hangs, you may disable EEPROM for boot and hot-enable it when in DOS). Then you will be able to configure XTIDE BIOS and burn the EEPROM (with EEPRM write enabled). I think the PS/2 variant is for MCA machines.
Pre solder the board and then solder and flux flux :) and knife tip its great :) but i love you try anyway i did 8pcs of Atari HD Cards just days before you visited me in Sweden :) have a Nice weekend Tommy
Definitely should have presoldered the pads yes. I know that, but did not think of it. Thank you Robert!
Hi'a Tommy! Don't beat yourself up about the SMD soldering. It just takes practice, that's all. Hot air is not easier in my opinion. Also, when assembling a board, remember to start with the smallest components first. SMD before throughhole..
True. Thanks. I realized after I started. I tend to do the easier tasks first :)
I would have started with the CF-card reader first… and then followed by the other components… anycase, nice video as always, from a fellow Norwegian living in the forests south of you😊
Yes, I should have done that first. I tend to do the easier tasks first. What forest is that ?
I usually use a lot of soldering flux and I would recommend you to check out Chisel soldering iron tip since it's technically meant for soldering down the QFP chips so it should help you with CF holder massively. As for the others attempting this, I recommend to solder the tabs first before you tacke the pins, it makes it massively easier to do that. As for who has TS100 or any smart soldering iron with chisel tip, I would say go for 400 - 420 °C temperature, that makes it a bit easier to drag molten solder.
Thank you :)
Keeep uup the goood woork ! :)
Thank you :-)
Preheating the board helps. it should be at the point where you can touch it, but don't want to hold it. Having the PCB hotter helps remove the solder between the pins when dragging or using the braid.
Ok, makes sense :-)
One of the reasons why this became difficult is that you are soldering things in the wrong order. You should start with the lowest components. If you start with sockets, electrolytics caps etc., it becomes difficult to solder things like this connector.
Also get the Mindshare book on ISA architecture.
Thanks!
CF card holder shows what seem to be 2 bridges near center and left- ? im probably wrong as you got it working
PS-all that formatting and fdisk /mbr junk reminds me of trying to setup an early XT/PCJR, its painful
Maybe. There are several ground pins. I got some more cards and CF-connectors now. I can try again:)
Yes, for sure
You're dragging your solder ball too fast. Go slower. Another way to do is to lay down balls like you did with your fast drag then use hot hair. You'll get bridges no matter what. But drag ssslllooowww. Or just do one at a time - of course taking your time. Also keep cleaning and re-tinning your solider head.
Thank you, I'll be better next time :)