Apple II

How best to clean an Apple ][+ keyboard

Submitted by fingerz on February 20, 2018 - 7:35am

Hi,

I'm trying to clean an Apple II+ keyboard. All the keys are working, but it's supper dusty under the keys and there are a few cobwebs. What's the best way to clean it?

Thanks!
-Jimmy.

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Apple II

Apple III - mouse dropping on motherboard !!! HELP

Submitted by KLund1 on February 18, 2018 - 9:34pm

I got a A3 to restore. I pulled the motherboard out and it has a lot mouse pee and little pellets all though the center part of the board. No nest though.
How best to clean???

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FYI - Problem with IIe

Submitted by wment on February 18, 2018 - 4:04pm

Continual CRs when booting IIe.

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Apple II

Super Serial Ethernet Card

Submitted by macnoyd on February 17, 2018 - 5:30pm

Finally working...

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Apple II

More Disk ][ Troubles

Submitted by KF5SDR on February 17, 2018 - 1:18am

Neither of my Disk ][ drives will read any disks. I've had this problem before; replacement of the 74LS125 on the analog card solved it then. I tried a similar thing today, but the problem persisted.

For what it's worth, I noticed that the impedances of Drive 2's head are higher than they should be according to Sams Computerfacts.

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Apple II

Monitors

Submitted by wishtoknow on February 16, 2018 - 9:58pm

The Apple III owner's guide includes a schematic but
the Apple Color Composite and Apple Color RGB do not.
Purposeful left out?
Does anyone know if there are schematics for these
monitors?

I have looked at

mirrors.apple2.org.za./ftp.apple.asimov/documentation/hardware/schematics/

and they are not there.

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Apple II

ProDOS 2.4.2 - Bitsy Boot - how to switch to 80 character mode

Submitted by tokabln on February 16, 2018 - 4:23pm

Not sure everybody has seen the last announcement regarding ProDOS 2.4.x

http://www.callapple.org/vintage-apple-computers/apple-ii/announcing-prodos-2-4-2-for-all-apple-ii-computers/

anyhow... I'm not able to switch to the 80 character mode... as the system always booting the Bitsy.boot file...

Is there anybody that could give my some hints booting ProDOS 2.4.2 in 80 character mode, please ?

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Apple II

Apple II Plus No Video, No Beep, but Power Light On

Submitted by fl3tching101 on February 13, 2018 - 11:06pm

I recently bought a working Apple II Plus from eBay and it worked great. However, a few hours later I pulled the top off while it was on, and the video signal cut out. I turned it off and back on again and now only the power light comes on. No beep on boot or video output. Several Apple repair manuals I have found give a list of a few chips that may cause this exact issue. These are the 74LS00, 74LS174, 74S86, 74LS02, 74LS153, and 74LS195 chips at locations A2, B1, B2, B13, C1, and C2. There's a slight problem in that at positon B1 my board has a 74LS175 chip.

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Apple II

Advice requested for repairing disk image on CFFA3000

Submitted by skipper1947 on February 4, 2018 - 10:07am

The disk image that my BBS runs on (Dura Europos) has developed errors. I fear they may be the result of adding the Fast Chip IIe and upgrading to GBBS Pro v2.14, though I hope that is just a coincidence.

I ran Mr Fixit, but it doesn't touch the errors. I want to replace the .po disk image with a clean one, but so far I have failed.

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Apple II

Before it goes on eBay

Submitted by BillO on February 3, 2018 - 10:56am

Wildcard 2

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