TS1500 composite mod

Discussions about Sinclair ZX80 and ZX81 Hardware
Lardo Boffin
Posts: 661
Joined: Sat Nov 26, 2016 1:42 am

Re: TS1500 composite mod

Post by Lardo Boffin » Wed Nov 01, 2017 2:02 pm

sirmorris wrote:
Wed Nov 01, 2017 1:48 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:
ZX81 iss 1 (bugged ROM, kludge fix, normal, kit)
Iss 3 with ZXVid, another in nearly perfect box
TS 1000 iss 3, ZXPand AY, ZX8-CCB & ZX-KDLX
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Spectrum 48k
Toastrack + DIVMMC future

dessony
Posts: 149
Joined: Tue Oct 29, 2013 1:26 pm
Location: Indiana, USA

Re: TS1500 composite mod

Post by dessony » Wed Nov 01, 2017 2:04 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

Lardo Boffin
Posts: 661
Joined: Sat Nov 26, 2016 1:42 am

Re: TS1500 composite mod

Post by Lardo Boffin » Wed Nov 01, 2017 2:25 pm

dessony wrote:
Wed Nov 01, 2017 2:04 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?
ZX81 iss 1 (bugged ROM, kludge fix, normal, kit)
Iss 3 with ZXVid, another in nearly perfect box
TS 1000 iss 3, ZXPand AY, ZX8-CCB & ZX-KDLX
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Spectrum 48k
Toastrack + DIVMMC future

Bean
Posts: 26
Joined: Fri Aug 01, 2014 7:40 pm

Re: TS1500 composite mod

Post by Bean » Thu Nov 02, 2017 1:30 pm

I use a ZXpand on my TS1500 by plugging the TS2040 printer in first. Works fine.

Lardo Boffin
Posts: 661
Joined: Sat Nov 26, 2016 1:42 am

Re: TS1500 composite mod

Post by Lardo Boffin » Sat Nov 04, 2017 10:34 am

Wow! Thanks for that. I will give it a go tonight!
ZX81 iss 1 (bugged ROM, kludge fix, normal, kit)
Iss 3 with ZXVid, another in nearly perfect box
TS 1000 iss 3, ZXPand AY, ZX8-CCB & ZX-KDLX
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Spectrum 48k
Toastrack + DIVMMC future

Lardo Boffin
Posts: 661
Joined: Sat Nov 26, 2016 1:42 am

Re: TS1500 composite mod

Post by Lardo Boffin » Sat Nov 04, 2017 8:59 pm

Blimey!
F3A2A548-ABB1-41BD-A78B-D378773B8596.jpeg
F3A2A548-ABB1-41BD-A78B-D378773B8596.jpeg (2.3 MiB) Viewed 116 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
ZX81 iss 1 (bugged ROM, kludge fix, normal, kit)
Iss 3 with ZXVid, another in nearly perfect box
TS 1000 iss 3, ZXPand AY, ZX8-CCB & ZX-KDLX
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Spectrum 48k
Toastrack + DIVMMC future

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