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Hi All, When I boot my Mac Classic I from ROM (Command-Option-X-O) while my BlueSCSI is plugged in, the system locks up once it reaches to the desktop. Does anyone else have this issue? As shown in the screenshot, the system gets to the home screen, and the cursor changes to the clock wait...

Here is the pinout for creating a composite video cable to connect from a TRS-80 to a video monitor. Needed: 5 Pin male DIN connector RCA cable with connector I went with creating a short adaptor cable with a female RCA plug, this way I never need to reach behind the CRT to plug it in and...

I recently came across two 800K Sony floppy drives where the disk was not ejecting. I replaced the gear which is known to break, but the eject motor just wouldn't engage. After some troubleshooting, cause of issue was a failed transistor. Background I've had one floppy drive (MP-F51W-23)...

I've had an interesting case which I haven't seen anyone else document yet. I have a couple Mac Plus keyboards at various stages of yellowing. For most, only top part was yellowed, bottom part was mostly ok. I decided that for the bottom part, leaving it out in the sun for a couple days would...

The keyboard on an Apple II Plus I aquirred was in dire need of a restoration. Full model of this keyboard is Datanetics 01-0551-01 Rev B, which is the 2nd keyboard to be made for the Apple II (original one was model 01-0425). . I started with the keycaps. I gave them a good wash in soapy...

I got my hands on an Apple II Plus along with this Apple IIe monitor which had no vertical drive for about $170 USD, which I think was a great deal. This (above) is the only picture of the monitor that existed in the listed auction, the description was vague. Upon receiving the monitor, it...

I have two issues with inserting 5.25" floppies into my external Unidisk floppy drive model A9M0104. First issue is that the disk would get stuck while putting the disk in, as shown in this video. The root cause seems to be not enough clearance for the disk to slide in. A 5.25" floppy disk...

I got an Apple II Plus which didn't power up. I started with the power supply. Visual inspection of the Astec AA11040 shows that it's in pretty good condition. However when I turn it on there was nothing on the output. First issue I found was that the fuse was blown. This would indicate...

Recently, I noticed that two of my Mac Pluses' speakers sound as if they're blown out during the bong boot sound. You know you have a bad speaker if the sound at boot is annoying rather than pleasant. The speaker is mounted to the Mac Plus analog board via a rivet eyelets. Best way to...

I'm troubleshooting this Apple IIc which shows horizontal lines on boot with no sound: It got into this state because a capacitor on the floppy drive went bad and shorted the +12v to Ground. By the time I found the culprit, the +12v did some damage on the main board, and need help...

A couple of my Mac Plus's make this very faint click click sound. Has anyone ever had the same and figured out what it could be? -It's coming from the lower center half of the analog board -Sounds like small electric shocks -With lights off, no visible arc or spark is seen -Board has been...

The Apple IIc external power supply (A2M4017) doesn't have a non-destructive way of being taken apart, so if it dies a replacement is likely needed. Here is a guide on how to make a replacement power supply. The Apple IIc manual states that it operates at 12v~15v. Maximum power consumption is...

I've reached out to Innovations earlier this week to check the price of a memory tester for testing 30-pin Mac SIMMs. To my surprise, I got a reply that they've permanently closing due to COVID. I've been having random issues with ram, and it's hard to tell if the Mac's are being too picky or...

Two of my Mac Plus's showed a lot of flickering when adjusting the brightness. I tried deoxit and it helped, but it didn't completely fix the issue. It's actually really simple to take apart and cleanup, and I would recommend anyone with a jittery knob to do so. Here's a writeup as I haven't...

I ran into a Macintosh Plus which when booted makes a continuous flup flup flup sound. This can occur if there's a voltage rail short on the logic board, floppy, or SCSI drive. The short can cause the hidden fuse inside the power harness that goes from the analog board to the logic board to...

When taking apart your Apple IIc, you may want to check if the internal power converter has any leaking capacitors. This guide helps you though the process. Note not all power supplies on the IIc are the same. This is meant of the Astec AA7341B, Apple part 699-0230, shown in images below...

The keys on my Apple IIc A2S4000 keyboard were very stiff, to the point where some had to be pressed really hard to get a click. The other problem is the keys with a latch (ex. Caps Lock) get stuck. We'll go over how we can fix both of these issues. First, this fix only applies to the...

I have a Japanese Mac Plus with a "Kanji" sticker on the ROM. I checked the part number, and indeed it's a different part number than the standard ROMs in the rest of the world. ROM Rev ROM-HI Part # ROM-LO Part # V1 342-0341-A 342-0342-A V2 342-0341-B 342-0342-A V3 342-0341-C...

My Macintosh M0110a keyboard cables are in various states and could use some restoration. The winding in one of the cables was pretty bad so I wanted to fix it. The cables also needed a good cleaning. Here's how I went about this as well as my results. Interestingly, none of the 6 cables...

I've managed to find near identical rivets used in the Macintosh to hold the vinyl jacket. Some of the older Macs used two sided sponge tape, I would suggest to scrub off that tape and replace it with these. I've also seen people lose them or break them, so I think some folks may need...