Sinclair QL - wanted one since 1984

[PhilC]

I always fancied a Sinclair QL back in 1984 I think when the adverts appeared but never got round to having one until now that it.

It’s a bit grubby and has a couple of keys missing and no PSU and no idea if it’ll even work.

70BA75EB-5402-4EB9-8B81-974966BFAC00.jpeg (422.91 KiB) Viewed 4453 times

I do know they need 9v DC and also 15VAC? Does anyone know if I can get it to boot with just the 9VDC? Guess I’ll find out shortly

[stephen_usher]

Looking at the schematic, it should be safe.

The Microdrives won't run. I can't see +9V, +12V or -12V going to any of the main chips.

http://www.sinclairql.net/srv/qlsm1.html

[Icky]

Welcome to the 68008 club @PhilC

[PhilC]

Thanks for the info @stephen_usher. I’ve done a bit of Googling and it looks like you need +12v for the video circuit? And as you say -12v for the micro drives.

I’m not too worried about this QL looking standard, so I’m going to see if I can make up a new PSU or maybe get a meanwell one that’ll do the +9, +12 and -12v required.

Can anyone spot a slight issue with the keyboard membrane? Nothing some scissors won’t cure.

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[Badwolf]

I always fancied a Sinclair QL back in 1984 I think when the adverts appeared but never got round to having one until now that it.

A sucker for Sir Clive in a scarf, eh?

Looks a beaut. Good luck!

I know nought about using a QL but like the fact they had a better expansion system than all the 'wedge' ST range.

BW

[PhilC]

Welcome to the 68008 club @PhilC

Thanks Icky, it’s another one crossed off my list.

[PhilC]

I know nought about using a QL but like the fact they had a better expansion system than all the 'wedge' ST range.

BW

That makes two of us

[Icky]

Welcome to the 68008 club @PhilC

Thanks Icky, it’s another one crossed off my list.

Am sure between @rubber_jonnie, @stephen_usher and myself we can get you buying all the modern add-ons.

[rubber_jonnie]

Thanks Icky, it’s another one crossed off my list.

Am sure between @rubber_jonnie, @stephen_usher and myself we can get you buying all the modern add-ons.

Oh boy, do we have a spending spree for you

[stephen_usher]

Thanks for the info @stephen_usher. I’ve done a bit of Googling and it looks like you need +12v for the video circuit? And as you say -12v for the micro drives.

I’m not too worried about this QL looking standard, so I’m going to see if I can make up a new PSU or maybe get a meanwell one that’ll do the +9, +12 and -12v required.

Can anyone spot a slight issue with the keyboard membrane? Nothing some scissors won’t cure.


B96C6530-5A52-4529-AD65-5E28116793D6.jpeg

I feel the need for a purchase from RWAP Software via Sell-My-Retro or maybe eBay coming on. (Keyboard membrane)

You could get a replacement PSU from here https://www.keelog.com/sinclair-ql-psu- ... y-uk-plug/