Hi there.
I've made the mod and described it on my blog (sorry Czech language only):
http://f6.bloguje.cz/819651-minimalisti ... alnost.php
But as I see it's almost the same mod as described Sami Vehmaa, which also applies to Spectrum. The mod works for modern LCD TVs with composite video input. The TV out works too. I've tried it on a CRT 100Hz TV and the picture is almost the same like on LCD. It's clear, but you can see some ULA and Z80 interferencing on the screen. Anyway, it's much better picture than trough antenne modulated output. You need only one resistor and one transistor (and some wires plus soldering iron . The transistor can be whatever, but must be NPN type. The resistor should be 100 Ohms. I took both parts from a died PC ATX power supply
F6
ZX80/81 on a modern TV...
Re: ZX80/81 on a modern TV...
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Sinclair ZX81/video out/ZX 16K RAM/LCD LG M1721A
Sinclair ZX81/video out/ZX 16K RAM/LCD LG M1721A
Re: ZX80/81 on a modern TV...
The pictures say it all
Thanks!
Thanks!
Re: ZX80/81 on a modern TV...
Hi,
Somes infos at :
http://zx81.ordi5.free.fr/brico/video
Or this video filter:
http://zx81.ordi5.free.fr/brico/ms/filtre%20ecran.djv
Somes infos at :
http://zx81.ordi5.free.fr/brico/video
Or this video filter:
http://zx81.ordi5.free.fr/brico/ms/filtre%20ecran.djv
Xavier ...on the Facebook groupe : "Zx81 France"(fr)