Jump to content
IGNORED

Dead Timex Sinclair 1000-Help


Recommended Posts

Hi,

 

I picked up a TS1000 with 9VDC power supply from a rummage.

 

The power supply may not be an original.

 

It is Tip positive is this correct?

 

I get an all black screen , the RF modulator appears to work. I get snow when i unplug or switch channels.

 

Any suggestions? Check regulator, clock crystal, soldering?

 

Looking at some posting there seem to be a lot of these assembled unit that are dead.

 

 

Link to comment
Share on other sites

I've found that the TS1000/ZX81 actually will not even display properly on late-model CRTs. You basically have to go back to a unit with analog tuning before you're guaranteed a good picture. I got a very faint, inverted display on my early 2000s Toshiba when I first tried. I found out I had to perform a mod to give the video signal a 'back porch'. I believe the following mod is the one I used, though I think I had to swap a few different values for the resistor at the top of the schematic before I got optimal contrast out of it. Although I suppose in the event that your TS1000 is actually broken, performing the mod may be a waste of time.

 

Schwarzschulter.jpg

  • Like 1
Link to comment
Share on other sites

You should see if you can test your Sinclair on a old TV, just to see if it is really working...

 

There are some mods to make the Sinclair Composite:

 

http://www.classic-computers.org.nz/blog/2016-01-03-composite-video-for-zx81.htm

 

and

 

http://www.sellmyretro.com/offer/details/Sinclair-ZX81-ZXVid---Composite-Video~~ULA-Fix-(self-fit)-2338

 

MarkO

Link to comment
Share on other sites

The TS1000 is prone to burnt, just leaving it on for a while without enough ventilation would fry the logic array chip.

 

I used to buy these from flea's markets and got two non-working, I had to order one from eBay marked as fully functional, but if I leave it enough time the screen starts showing trash and I better turn off it before it burns also.

Link to comment
Share on other sites

The TS1000 was my first computer, so it holds a special place in my heart. Having one to physically "have" it is one thing - but if you actually want the experience of "using" one, the next best thing (...maybe better, actually), is the EightyOne emulator. It displays an on-screen keyboard to make it easy to use the clever one-key-per-command BASIC programming interface, and the view screen is size-able and includes adjustable video effects.

 

post-12574-0-71760600-1484622528_thumb.png post-12574-0-62638100-1484622535_thumb.png

  • Like 2
Link to comment
Share on other sites

Well , this is what i found:

 

The TS1000 was not dead, it just did not display on my Sony CRT ( brightness set too low or ??) I tried it on my LCD and got a prompt!

 

However only some of the keys worked.

 

Seems the flex cable from the membrane keyboard has a couple broken traces, The breaks are too high to cut back the flex circuit so I will have to try some other repair.

 

I have been reading about all the broken flex cable problems with the keyboard and the repairs that were done.

 

Seems I will have to use some ribbon cable and make a jumper. Has anyone tried to solder or use some conductive glue to attach wires to keyboard flex?

 

If so, let me know what you used and any tips.

 

If I would find a replacement membrane keyboard that would be the best but did not find any searching.

 

Anyone have one or complete top cover of case?

 

If I end up fixing and keeping, ill search out a nice 12" Black and White TV.

Edited by Everett1954
  • Like 2
Link to comment
Share on other sites

Well , this is what i found:

 

The TS1000 was not dead, it just did not display on my Sony CRT ( brightness set too low or ??) I tried it on my LCD and got a prompt!

YEA!!!!!

 

However only some of the keys worked.

 

Seems the flex cable from the membrane keyboard has a couple broken traces, The breaks are too high to cut back the flex circuit so I will have to try some other repair.

 

I have been reading about all the broken flex cable problems with the keyboard and the repairs that were done.

 

Seems I will have to use some ribbon cable and make a jumper. Has anyone tried to solder or use some conductive glue to attach wires to keyboard flex?

 

If so, let me know what you used and any tips.

 

If I would find a replacement membrane keyboard that would be the best but did not find any searching.

 

Anyone have one or complete top cover of case?

 

If I end up fixing and keeping, ill search out a nice 12" Black and White TV.

RWAP Software

http://www.sellmyretro.com/offer/details/Brand-New-Sinclair-ZX81-Keyboard-Membrane-(inbuilt-keyboard)-2529

 

I haven't bought any, but these were built in 2010....

 

Good Job!!!!!

 

MarkO

Link to comment
Share on other sites

Thanks almightytood and markO for the emulator and sharing your help and photos of your collection.

 

I am going to try and get one of those keyboards from "across the pond" and will let you know how that works.

 

I have a long way to go to have any collection but once it is fixed would like memory pack and a Basic manual.

 

MarkO do you still use a cassette recorder?

 

Where is a good site for programs and games and general Timex Sinclair info?

  • Like 1
Link to comment
Share on other sites

I don't know about general ZX-81 sites, but Bob Smith is doing some amazing games.

https://bobs-stuff.co.uk/zx81.html

 

I can't tell if they will run on a TS1000, and you probably need a good chunk of memory expansion. You didn't mention if your computer is mostly barebones but 16K or more memory expansion seems to be a standard accessory. There also are other hardware expansions like the ZXpand etc that will set you back quite a bit of money, but if get serious about the system you might want to consider some of those anyway.

  • Like 1
Link to comment
Share on other sites

Thanks almightytood and markO for the emulator and sharing your help and photos of your collection.

No Problem...

 

I am going to try and get one of those keyboards from "across the pond" and will let you know how that works.

Keep us informed on how it works... I might be needing to get one or five at some point...

 

I have a long way to go to have any collection but once it is fixed would like memory pack and a Basic manual.

The ZX-81 only has 1K, ( the TS-1000 has 2K, the TS-1500 has the 16K Built In ), so a 16K RAM Pack is a really good idea.. It can and will Wobble, so Velcro is Your Friend!!!

 

 

MarkO do you still use a cassette recorder?

Not any that work correctly, at this time... So no... I have been looking at one of those RAM + Battery cards for the ZX81. That might be a nice add on...

 

Where is a good site for programs and games and general Timex Sinclair info?

I haven't really spent much time in the past few years looking for ZX-81 "stuff".. So I would use Google to locate a few sites... ( Sorry... )

 

MarkO

Link to comment
Share on other sites

This is where you can find an extensive collection of ZX-81/ T/S 1000 games - Many will need the 16k expandable ram

http://www.zx81stuff.org.uk/zx81/tape/c

 

There is a utility here called Tape2Wave that will convert the .TZX files into a wave file that you can either put on a tape or play it though an mp3 player or a smart phone.

 

http://www.worldofspectrum.org/utilities.html

 

I suggest Sea Wolf, City or Xon (Zaxxon Clone) and Pioneer Trail (Oregon Trail for the T/S 1000). Word of warning: You might have to load it a couple times as it may not load the first play-through.

Edited by bpatte02
  • Like 1
Link to comment
Share on other sites

I found a lot of the TS 1016 16KB memory modules on ebay for very good prices.

 

I purchased two for $9.95 (both) so hopefully one will work.

 

Once i have a working unit (keyboard replaced) I plan on doing the composite modification.

 

I will try the tape to wave program with an MP3 player also.

 

How can I verify that my TS1000 see's the TS1016 module?

 

Can I see free ram available somehow?

 

I would like to find PDF's of all the manuals. Any help?

 

 

Thanks for all the great info everyone has provided!

Edited by Everett1954
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...