TS1500 composite mod

Discussions about Sinclair ZX80 and ZX81 Hardware
Lardo Boffin
Posts: 2160
Joined: Sat Nov 26, 2016 2:42 am

Re: TS1500 composite mod

Post by Lardo Boffin »

sirmorris wrote: Wed Nov 01, 2017 2:48 pm Also some way of reconfiguring the RAM. The TS1500 has 16k internal, which remaps when a ram pack is plugged in. This will conflict.

C
Argh. I did read somewhere about being able to plug in a 16k RAM pack and get 32k.
I guess I will stick to loading from tape on this one then...

:roll:
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
dessony
Posts: 342
Joined: Tue Oct 29, 2013 2:26 pm
Location: Indiana, USA

Re: TS1500 composite mod

Post by dessony »

One of two TS1500s in my hands has the exact similar video modulator to one pictured above one. Both of these modulators were gutted out to make a room for the 1024MAK/dessony veroboard circuit board.

viewtopic.php?f=7&t=2405&p=25270&hilit= ... deo#p25270

As for the TS1500 video circuit, find a diode marked (D19) then hook up the video wire to the diode's anode side.

Thank you very much in advance.

Wm
Lardo Boffin
Posts: 2160
Joined: Sat Nov 26, 2016 2:42 am

Re: TS1500 composite mod

Post by Lardo Boffin »

dessony wrote: Wed Nov 01, 2017 3:04 pm One of two TS1500s in my hands has the exact similar video modulator to one pictured above one. Both of these modulators were gutted out to make a room for the 1024MAK/dessony veroboard circuit board.

viewtopic.php?f=7&t=2405&p=25270&hilit= ... deo#p25270

As for the TS1500 video circuit, find a diode marked (D19) then hook up the video wire to the diode's anode side.

Thank you very much in advance.

Wm
Thanks. I assume this would mean I could run a cable from inside the case rather than using the TV Out port?
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
Bean
Posts: 73
Joined: Fri Aug 01, 2014 8:40 pm

Re: TS1500 composite mod

Post by Bean »

I use a ZXpand on my TS1500 by plugging the TS2040 printer in first. Works fine.
Lardo Boffin
Posts: 2160
Joined: Sat Nov 26, 2016 2:42 am

Re: TS1500 composite mod

Post by Lardo Boffin »

Wow! Thanks for that. I will give it a go tonight!
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
Lardo Boffin
Posts: 2160
Joined: Sat Nov 26, 2016 2:42 am

Re: TS1500 composite mod

Post by Lardo Boffin »

Blimey!
F3A2A548-ABB1-41BD-A78B-D378773B8596.jpeg
(2.3 MiB) Downloaded 239 times
It does work! Is that specific to the printer connector or just because it now fits?

Thanks plenty for that!

It’s a pity I have just sold this printer... :oops:

“I’ll never use it’ he says....

Lardo
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
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