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Very well could be a power supply issue. I say that because in a iisi a leaky power supply has sometimes caused this same error, do you have photos?

Meant like some have yellow on blue or black on blue or white on blue haha

Excited to see that let us know which screen color you go with.

Absolutely going to be putting these on my old TechStepS well at least one because one is starting to get dim. The new one is going to be just absolutely wonderful.

Yes it will the new LCDs appear to work with the old and look great!

It’s all coming together awesome!

I have a spare 512k board that has that chip if you’re interested.

Yeah it’s getting kinda insane, but this will be a modern day one with modern improvements and most of all it will be a heck of a lot cheaper and do the same things.

Well the three I’ve had have had that issue and you can try epoxying over but it’s not necessarily always the issue.

Uusually experience I've had with the 512k tells me that clicking is a bad flyback but could be a multitude of things. Turn off the lights and with the case off turn on the MAC id you see a purple glow the Flyback epoxy has cracked and is arching.

Beat me to it

Give me a bit I’ll look here in a few

This is the entire collection of volumes 1-7 and the "Peripheral Interface Guide" found in the "Apple Service Technical Procedures" series. This series was produced from February of 1987 to around September of 1987. Many descriptions, diagrams, part numbers, repair tips, troubleshooting...

This is the seventh iteration of the "Apple Service Technical Procedures" series. This was released around March/April of 1987 to Apple Service providers. The contents are quite bizarre as it's a mix of things. Items such as the 300/1200 Modems and the Personal Modem. Also there is a strange...

Makes sense in my opinion I can see how for some especially the first time ordering a PCB, it can be very confusing.

Yes these gerbers are all free to download simply click the code button, download the .zip file and make sure when you go to JLCPCB or PCBWAY you upload the .zip. I mention this because on a Mac it can automatically extract the .zip and place it in the trash.

I used a BlueSCSI on mine I believe I used ID 4 as well, the selector switch I believe can still be purchased from place like digikey or mouser. I’ll look.

This is the Fifth iteration of the "Apple Service Technical Procedures" series. In this guide Floppy drives are mainly discussed. Everything from how to repair, troubleshoot, and upgrade the Disk II, Disk ///, ProFile, DuoDisk, Disk IIc, UniDisk 3.5 (800k External Drive), and Apple 5.25...

@Garrets Workshop / @Zane Kaminski has a RAM128 Card you can order Gerber's for, the GitHub is HERE @Hans Huebner has created a sound card the "MockingBoard2k", the GitHub is HERE

Very common issue there are ID settings you may have to change around to get the order right. If you look on the drive carrier cage there are little number readers and if you click them they change the ID perhaps you may have set this up incorrectly, do you have photos? Also, if you need the...