Assembly?

[JKnightandKARR]

Do you think this would help him?

It looks like he could use it, RGB monitors (and this converter) just take three (or is it four) composite inputs, one each for red, green and blue. If he were to take the composite output from the TS-1000, and plug it into either of those inputs he could have a red-, green- or blue-screen output display for his computer. The manual does show that this converter should work with a TS-1000, in any of several different modes.

That said, it seems that a plain composite-in monitor, or television, would be far simpler.

@JKnightandKARR, do you have a composite-in monitor, or television?

Other then my smart tv's, no, which has composite, 1 of them component too i think, but my desktops monitors are hdmi/display port only.  I should have all parts todo the transistor mod. I've seen mods with something called back porch, but NO idea what that is or if even needed...

[granz]

Do you think this would help him?

It looks like he could use it, RGB monitors (and this converter) just take three (or is it four) composite inputs, one each for red, green and blue. If he were to take the composite output from the TS-1000, and plug it into either of those inputs he could have a red-, green- or blue-screen output display for his computer. The manual does show that this converter should work with a TS-1000, in any of several different modes.

That said, it seems that a plain composite-in monitor, or television, would be far simpler.

@JKnightandKARR, do you have a composite-in monitor, or television?

Other then my smart tv's, no, which has composite, 1 of them component too i think, but my desktops monitors are hdmi/display port only.  I should have all parts todo the transistor mod. I've seen mods with something called back porch, but NO idea what that is or if even needed...

I do remember seeing "back porch" mod before, but don't remember what that is. At least you can test it out on your television, and then if either TS-1000 works, you can decide to either get another TV for a monitor for the Timex, or get a convertor for a VGA, or HDMI, monitor.

[JKnightandKARR]

Do you think this would help him?

It looks like he could use it, RGB monitors (and this converter) just take three (or is it four) composite inputs, one each for red, green and blue. If he were to take the composite output from the TS-1000, and plug it into either of those inputs he could have a red-, green- or blue-screen output display for his computer. The manual does show that this converter should work with a TS-1000, in any of several different modes.

That said, it seems that a plain composite-in monitor, or television, would be far simpler.

@JKnightandKARR, do you have a composite-in monitor, or television?

Other then my smart tv's, no, which has composite, 1 of them component too i think, but my desktops monitors are hdmi/display port only.  I should have all parts todo the transistor mod. I've seen mods with something called back porch, but NO idea what that is or if even needed...

I do remember seeing "back porch" mod before, but don't remember what that is. At least you can test it out on your television, and then if either TS-1000 works, you can decide to either get another TV for a monitor for the Timex, or get a convertor for a VGA, or HDMI, monitor.

https://jknightandkarr.altervista.org/Computers/Screenshot_2025-12-22_193636.png
This is what I need to hook it to my tv.  Know any tricks I can use to do this?

[Chris Savage]

I do remember seeing "back porch" mod before, but don't remember what that is. At least you can test it out on your television, and then if either TS-1000 works, you can decide to either get another TV for a monitor for the Timex, or get a convertor for a VGA, or HDMI, monitor.

In a video signal, the back porch is the duration between end of horizontal pulse and start of the next line with video information. As I recall, it happens when the beam returns for the next scan.

An image search gave me this:

[Chris Savage]

This is what I need to hook it to my tv.  Know any tricks I can use to do this?

These are matching transformers for when you're trying to connect a 300Ω 2-wire lead from an FM antenna to the 75Ω coaxial connector on the back of the TV.

[granz]

In a video signal, the back porch is the duration between end of horizontal pulse and start of the next line with video information. As I recall, it happens when the beam returns for the next scan.

Ahh yes, I remember now - thanks. It is part of the horizontal blanking time. It has been a long time since I was into television repair (the mid-1970s - over half a century ago! )

[granz]

This is what I need to hook it to my tv.  Know any tricks I can use to do this?

These are matching transformers for when you're trying to connect a 300Ω 2-wire lead from an FM antenna to the 75Ω coaxial connector on the back of the TV.

I'm pretty sure that there is a matching transformer in the box that I sent to you.

[Chris Savage]

When possible, I would prefer to use a composite signal over a TV (RF) signal any day. It's easier to get into modern equipment too. I still have video capture hardware for composite signals.

[JKnightandKARR]

This is what I need to hook it to my tv.  Know any tricks I can use to do this?

These are matching transformers for when you're trying to connect a 300Ω 2-wire lead from an FM antenna to the 75Ω coaxial connector on the back of the TV.

I'm pretty sure that there is a matching transformer in the box that I sent to you.

Cool, thanks.

When possible, I would prefer to use a composite signal over a TV (RF) signal any day. It's easier to get into modern equipment too. I still have video capture hardware for composite signals.

Agreed, the tv is supposed to have a bad signal, and going todo composite mod.

[granz]

When possible, I would prefer to use a composite signal over a TV (RF) signal any day. It's easier to get into modern equipment too. I still have video capture hardware for composite signals.

I'm thinking that a modern-ish television with composite in will act more like a monitor (high enough resolution, etc.) The examples that I have seen which show the composite output from a ZX-81, or TS-1000, show a drastic improvement using composite out to a television, versus the same computer using RF output to the same television.

[JKnightandKARR]

This is what I need to hook it to my tv.  Know any tricks I can use to do this?

These are matching transformers for when you're trying to connect a 300Ω 2-wire lead from an FM antenna to the 75Ω coaxial connector on the back of the TV.

I'm pretty sure that there is a matching transformer in the box that I sent to you.

I took the one I bought appart and have made the circuit using 2N3904, 33 ohm and 100 ohm resistors. I have the 33 ohm resistor soldered to the output, and the 100 ohm resistor to gnd, still need to hookup the input and 5V using ext wires, which I need to dig out.

[Chris Savage]

I took the one I bought appart and have made the circuit using 2N3904, 33 ohm and 100 ohm resistors. I have the 33 ohm resistor soldered to the output, and the 100 ohm resistor to gnd, still need to hookup the input and 5V using ext wires, which I need to dig out.

Glad you're making progress on this, which begs the question...are you planning on using this for Z80 assembly learning? I'm asking since that's what this thread started on. 

[JKnightandKARR]

I took the one I bought appart and have made the circuit using 2N3904, 33 ohm and 100 ohm resistors. I have the 33 ohm resistor soldered to the output, and the 100 ohm resistor to gnd, still need to hookup the input and 5V using ext wires, which I need to dig out.

Glad you're making progress on this, which begs the question...are you planning on using this for Z80 assembly learning? I'm asking since that's what this thread started on. 

Yeah.

[Chris Savage]

Yeah.

Well then, I hope you're able to get the display working ASAP. We got work to do! 

[JKnightandKARR]

Yeah.

Well then, I hope you're able to get the display working ASAP. We got work to do! 

I got wires soldered, but think the signal wire on wrong pin. Not sure if arrow pointing to a trace or the first wire on left next to edge, cause center isn't it...