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I have found them as well, but you need some kind of crimper to push the wires into the blades to make contact. I have tried screw driver tips, pliers. ALl the cables I have tried making with those ends came out terrible. So you NEED whatever crimper/tool is required.

probably why I have so few laptops in my collection.. Luggables are more fun anyway.

You can see heat has been an issue as there is scorching on some of the connectors. I am guessing as the strands were breaking and the resistance went way up they got pretty hot. The wires that connect to the ends are brittle and the shielding is cracked in a few places.

So I think my system has a power supply from a III plus instead of a standard III. The standard model III Psu is model AA11190 but mine is AA1191B (its beige not green and has a date code of Feb 1983) The layout is a bit different. I was expecting a 7905 but there is a 2n6395 So I pulled out...

I really need to do something with both my Model 1's. I have never really even touched them in years. I know the model 1 monitor I ordered arrived completely damaged from eBay as noone knows how to properly ship a monitor. So I should probably rebuild the monitor soon as well. Good winter...

No way thats the easy way out and there is no troubleshooting involved which is most of the fun with old computers. I have one because I got it in a trade but I use it for bench testing. I would much rather have an actual Apple III psu. I have fixed 3 dead apple III psus in the past (this one...

Morning all. My Apple III just lost the -5V rail completely, all other voltages are present and fine. Anyone familiar with this type of fault?

Before going further it would be a good idea to change all the capacitors. I know the Axials are far less prone to leak than SMD, but they are 35 years old, and it would be one less variable to consider,.

The SMD caps on the board are bad and need to be changed. Very low audio output is usually a dead giveaway.

so it turns on even with the power button removed?

Again, you should test the contiunity of the switch. You can also desolder the switch and see if the system still turns on. IF it does you have additional problems. Which Is what I would lead to as I havent seen one of those power switches on any of the MACS which had them go bad (other than...

do a continuity check on your power switch. IS it always on or does it only chime when you push it? Also are those original or new batteries?

Its just a basic Mac II? IF I recall (been a while and I cant find my pdfs) wasnt D5 or D4 involved in the startup voltage to turn on the psu? It could be stuck. Are you sure its not the psu?

I just buy things from where I can get them. Those chips are not easily available so I took the chance on what that Polish seller had. As far as a trade I think Ill pass thanks anyway. I dont have enough brackets to go around, same goes for hard drives and again.. If I get another board I will...

Well it was IBM R&D so I couldnt tell you what they were trying to do.

New Englang USA, Connecticut. In 4 or 5 year the answer will be Europe. Why do you ask?

Will do. So many broken traces to repair before even knowing if the logic is working. Now if only somone will make a modern 68040 ( or alternative) cpu upgrade for the Macintosh II that wont break the bank...... I have a portrait monitor and two page display which will pair nicely with these...

Well you know how old SCSI drives are. I will try and post back. They are 5.25" single height scsi drives so thats an odd size (then again I have a SCSI 2 one Gigabye dual 5.25" monster of a drive working in my IBM 5160 so maybe its not to weird. Weird for a MAC. If I can get the drive working...

Yeah, battery leakage on a few of them. I received 2 complete MAcintosh II systems and 2 complete Macintosh IIx systems and one spare Macintosh II board. I fully repaired one MAcintosh II board and one Macintosh IIx board. I have another II board which I have repaired to the point of the startup...

Id rather find a NOS replacement or alternative. IF I get another MAC II board I will be compelled to fix it...