Sinclair ZX80 / ZX81 / Z88 Forums

One more thing. Since I changed the "channel switch" to provide 0V to the bare wire closest to the ULA, I can use that for my 0V in the future with a new ZX8-CCB, correct? And Yes, I will disable the ability for that switch to ever work again.

Joe

I believe think the middle bare wire is 5v (USA2) I reconnected the red lead to this wire. The bare wire closet to the ula (USA1) is connected to the channel 2/3 switch and depending on the switch gets 0v or 5V I changed the switch to produce 0V and double checked with no continuity to that pin. I e...

I did find an issue where the 0V wire did not have continuity between the connection point on the board (bare wire closest to the ULA) and pin 34 of the ULA. So I moved the alligator clip to the pad where the modulator mounts and received continuity there and at the 0V on the ZX8-CCB. I tried bootin...

It goes in all of the way. It just doesn't have any tension holding it. It even has a mild crease from being installed before I received the unit. All of the keys were working as well before I opened the unit. It's as if the pins need to be bent towards the opening to provide tension (but I'm not go...

I can give it a try. The one I use with my Commodore computers is from 2011. I have two other monitor/TV's from 2009 that I'll try out.

Thank you!

Joe

Oh, and here's some pictures from my soldering:

What's the secret to reinstalling the TS-1000 keyboard? It seems pretty straightforward, yet I can't get the larger cable to get grabbed by anything. The smaller one is fine. I've looked deep into the socket, and there's no obstructions inside. both of the cables are the same length, and neither has...

Well, I'm back from vacation and all of the family obligations. Before I go into detail, I need to ask if the TS-1000 will boot without the keyboard installed? Keep this in mind for when I ask how to reinstall the keyboard (yes, it's an issue) Today, I did this: 1) Removed the RF modulator by desold...

I've been communicating via email with Stewart and zebrasystems.com (U.S. based) who sold me my ZX8-CCB. He provides online technical support, and even is willing to take a phone call at reasonable times of the day. With his help. I have a final design for installation. I even have a plan for using ...

Thank you, Mark. It sounds like I would be better off just abandoning the idea of retaining the RF capability, which I’m okay with doing. I’ll look at things better in two days. I’ll be spreading my parents ashes in the Pacific tomorrow, then make the long drive home at night. This has been delayed ...

No need to apologize to me. I'm in no hurry. Thank you.

I'll have to like at my system to see what you mean. I'm curious as to why the guy in the YouTube video did so many configurations that worked, but never disconnected anything.

Joe