Apple II

Repairing the Apple iigs keyboard key switches

Submitted by insanitor on July 23, 2015 - 1:29pm

The Apple iigs keyboard model A9M0330 key switch is comprised of several pieces. Three of which you can see on the outside and four you can see on the inside. Like the Apple iie key switch, the metal contacts fit inside slots which are located on the upper plastic piece. These are those contacts which when in contact together make a connection on the board where the switch is soldered onto. The key switch is a momentary push button single pole single throw normally open switch. The reasons for cleaning the switch are obvious.

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Apple IIe monochrome output

Submitted by iegova on July 22, 2015 - 1:47am

Hello! I have Apple IIe platinum International NTSC. But it works in monochrome mode. In PAL.
Can I switch it to color mode? My TV supports both NTSC and PAL.

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motherboard problem

Submitted by insanitor on July 20, 2015 - 8:06pm

UPDATE:

Repair attempt unsuccessful, no chance of repair.

Thanks for the help.

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Apple II

Vertical lines at boot

Submitted by 1978AppleII on July 20, 2015 - 2:55pm

Argghhhh!!

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Apple II

Apple //c Rom 3 problem

Submitted by Mr.Fix on July 19, 2015 - 1:38pm

Hi, so here is the problem. when i turn on the computer the 5.25 floppy drive will not spin at all. when i disconnect it from the board and connect my SDfloppy2 device the system will boot and play the emulation. The floppy drive does work as i connect it to my other a2 system and it boots and runs programs. any solutions? thanks.

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Another II+

Submitted by 1978AppleII on July 17, 2015 - 6:34pm

Saved from the dumpster! (no kidding)

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Apple II

Apple iigs power supply question #3

Submitted by insanitor on July 16, 2015 - 9:04pm

I am in trouble.

Can anyone help me?

Some of the capacitors are extremely hard to remove because there is a ton of glue on top and around them.

In removing one of them, I stretched the wires in component L7.

I don't know what this thing is because I cannot identify the symbol under it.

I don't know how to test it.

I don't know if this thing has a polarity.

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Apple II

Apple iigs power supply question #2.

Submitted by insanitor on July 15, 2015 - 8:59pm

Hi, guys.

I am replacing the capacitors on an Apple iigs power supply. The model number is 699-0126.

I found something peculiar.

I am fiddling around with two of these power supplies.

All of the radial electrolytic capacitors on these have the same value except 1!

One has a capacitor with a value of 300μF 200V.

And on the other power supply has in the same location a capacitor with a value of 330μF 200V!

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Apple II

Replacement cable for Apple Duo Disk?

Submitted by daveculp on July 15, 2015 - 11:14am

I just got a functional and in good condition Apple IIe with green monochrome monitor and duo disk drive for $20.00. However, the duodisk cable is missing. Is there anyplace that sells them these days or any standard cable that I can use to replace it?

Thanks!

David

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Apple II

Apple II keyboard bulb?

Submitted by 1978AppleII on July 14, 2015 - 2:30pm

So I am fortunate enough to have an early Apple II with the raised power light - but find myself in need of a replacement bulb!

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Apple II

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