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I got this in a lot of other computer cassettes. Does anyone know what it's for? I suspect it's for an S-100 or other early system. I did make a WAV of the contents if anyone wants that, or I'm happy to pass along the cassette for cash or trade.

When it comes to inability to read other drive's disks for Apple ][ disk drives, speed is usually the issue. Alignment is rarely, if almost never, an issue. Of course, the most common issue with these drives overall is a dirty read/write head. That is assuming you have an otherwise working...

Anyone into collecting the Microvideo Interact? These are my spare cassettes. I'd prefer to trade for titles I'm missing if you have any to trade. I'm also into software for Apple II and Commodore PET, among others. If you don't have stuff to trade, I'm asking $25 per game, or 5 for $100, or...

I have a similar problem as mbliss11. Recently picked up another PC-6001. I get a blank screen, unresponsive unit. I'm using 120v US wall current. -12 comes up as 13.5 +12 comes up as 16 +5 comes up as 5.4 without load, which may correct with load, from what I'm reading. I found the 4 blue...

I haven't been able to find any information about what it's for. It came to me with some unrelated computer items.

Does anyone know where I can get a replacement for the keyboard overlay/panel mount for the Casio PV-2000? I believe someone makes them, although not sure where from. Presumably Japan, considering it's a Japanese system. Pictured is an example of the system with a replacement overlay. Thanks!

I got a unit recently with the external power supply. It outputs nothing when I check it with my meter. I didn’t try it with the hardware, just to be safe. I would like to replace the PS with the PCjr to ATX board and a PicoATX but the former are out of stock from the guy who created them. I...

I ordered a Spectrum Diagnostic cart from the UK, so hopefully that will do the trick. I appreciate the advice and suggestions.

Hello all, I have a 2068 that shows these bars. I figured I'd replace any bad RAM and socket it. Unfortunately I pulled up a few traces but I put (yellow) bodge wires best I could between the RAM legs with the bad traces. After confirming all the RAM is good, what is the next step to...

I just uploaded some scans that need to be stitched together. The PCB was too wide to get in one go so there are two images of the front and two of the back. I'm not sure if we've seen any of these units out there aside from ads. https://archive.org/details/mindset-video-production-board-0003...

As I understand it, the power supply should always have power. It does not have a switch or any apparent communication with the main board for power. The service manual does say that it should put out voltage, which I'm assuming is because it is not load requiring. That being said, I still tried...

I recently picked up a Mindset (main unit only with keyboard) and I'd like to get it working. The power supply unit I have does not put out appropriate voltages, essentially zero. I recapped the power supply, aside from the small caps on the boards perpendicular to the main power supply board...

Does anyone know of a CNC routed or 3D printed case or similar protective design for used with PC floppy disk drives? The drives I need this for are all half height. I would like something that screws into the side holes and protects the exposed top and bottom the drive. It doesn't need to be...

Hi, My Model 4, original version, seems to start up and read disks, but puts out no useful video. I tried break-reset and starting it up while holding the 3 key, the video always looks like this (not with the black bars, which is an artifact of photographing a CRT). The contrast pot is...

I'm looking for a recommendation on a DOS shell or menu program I can use with a large volume I have setup using an XTide. I have tried a few. Some limit the number of directories they read, and tend to be slow to read the directory structure all at once. Some menus don't work at all using my...

I have a nice Heath Z-100 here, the one with just the disk drives. It starts up to the hand prompt, but does not load floppies from either drive after B F1 or B F1 1, which is the boot command. Just verified the disks I’m trying (MS-DOS 2.0) work on a Tandy 1000. Also tried some Heath CP/M disks...

Hi, My latest repair project is this OSI Model 600. I reseated all the chips and wiped off the board. I tested power output (5.2V no load) and started it up. It gave me the garbled character screen then the single character screen when I hit break. Any suggestions where to go next? It does not...

@ldkraemer I went down the chain and everything seems ok. That is, if I'm interpreting the spectra properly. This is my first time doing this, really don't know what I'm doing. For example, using the technical manual and the expected frequencies on the chain, I should expect HDRV Z50 Pin 11...

I have this Model I here that gives me a rolling black and white bar screen when I power it on. No text. I am using a known good monitor cable and power supply. This unit seems to have a good number of mods. The case stated it has the lower case mod, but I don’t know what the rest are. One is...

I have a PC-1250 that I'd like to get working. It had battery terminal damage which I repaired. It powered up to frozen screen with a few LCDs on, unresponsive. This stopped after several power cycles, followed by one normal power cycle that briefly showed the correct prompt but the LCD faded...