"Professional" Keyboard TI99 Packaging Project

Any discussions related to the creation of new hardware or software for the ZX80 or ZX81
Post Reply
User avatar
gammaray
Posts: 590
Joined: Sun Apr 17, 2016 2:44 am
Location: Texas

"Professional" Keyboard TI99 Packaging Project

Post by gammaray »

So far this is the best keyboard for TXZ81000 (TS1000/ZX81) conversion since most of important keys layout is arrayed on 8x5.

It's dirty and one key is stuck from some contaminent...
IMG_20180106_152123.jpg
(2.31 MiB) Downloaded 285 times
Dirty inside...
IMG_20180106_152032.jpg
(2.91 MiB) Downloaded 285 times
Bottom tray...
IMG_20180106_152053.jpg
(4.87 MiB) Downloaded 285 times
Keyboard and power supply...
IMG_20180106_165135.jpg
(2.89 MiB) Downloaded 285 times
This is a HI TEC keyboard http://www.mainbyte.com/ti99/console/alpha_lock.html
hi tec IMG_1380-tny.jpg
hi tec IMG_1380-tny.jpg (49.56 KiB) Viewed 3248 times
Need to clean. What solvent would work on plastic, aluminum and copper chemically neutral?
Will use a Waterpik to clean tight spots with a controllable jet of fluid.
5-TS1000,UK ZX81<-Sheelagh, US ZX81, 2-TS1500/KDLX , 3-TS2040 printer, 2-TS2020 cassette decks, ZXPAND+AY, ZeddyNET, ZXBlast, UDG, ZX8CCB, AERCO, BUILDS/REPAIRS ZX Spectrum, ZX80 Minstrel, ZXMAX48 v1 v2, 2-TS-2068, ROM, 16kRAM
McKlaud
Posts: 337
Joined: Tue Dec 19, 2017 10:02 pm
Location: St Albans, UK

Re: "Professional" Keyboard TI99 Packaging Project

Post by McKlaud »

IPA is goo. But be very careful with any printed labels. They will come off if the paint is alcohol based.
Claudius
----------
User avatar
gammaray
Posts: 590
Joined: Sun Apr 17, 2016 2:44 am
Location: Texas

Re: "Professional" Keyboard TI99 Packaging Project

Post by gammaray »

If IPA is Isopropyl Alcohol commonly found at drug stores in various concentrations,

that is how I dissolved the aluminized contacts on my mother's TS1500 keyboard membrane. She relegated it to the closet until SellMyRetro began selling replacements for the Spectrum which could be used as a replacement. That is when my covetous nature convinced her she no longer needed it :twisted:

Looking for another substitute unless no one thinks that anything on the TI99/4A keyboard would be aluminized...
5-TS1000,UK ZX81<-Sheelagh, US ZX81, 2-TS1500/KDLX , 3-TS2040 printer, 2-TS2020 cassette decks, ZXPAND+AY, ZeddyNET, ZXBlast, UDG, ZX8CCB, AERCO, BUILDS/REPAIRS ZX Spectrum, ZX80 Minstrel, ZXMAX48 v1 v2, 2-TS-2068, ROM, 16kRAM
axtelle
Posts: 14
Joined: Sun Sep 10, 2017 6:37 pm

Re: "Professional" Keyboard TI99 Packaging Project

Post by axtelle »

User avatar
gammaray
Posts: 590
Joined: Sun Apr 17, 2016 2:44 am
Location: Texas

Re: "Professional" Keyboard TI99 Packaging Project

Post by gammaray »

Probably will make a power cord as it is 4 pronged and none on eBay except bundled with a computer.

Using some liquid RTV silicone and making a mold using male recessed socket from OEM power circuit, aplug could be made. Mostly because case would need modification to use more modern equivalent.

Then it is time to determine if a new PCB for power and/or other things is necessary...

What voltage max. current scheme is already being put out...I'll get my voltmeter...
5-TS1000,UK ZX81<-Sheelagh, US ZX81, 2-TS1500/KDLX , 3-TS2040 printer, 2-TS2020 cassette decks, ZXPAND+AY, ZeddyNET, ZXBlast, UDG, ZX8CCB, AERCO, BUILDS/REPAIRS ZX Spectrum, ZX80 Minstrel, ZXMAX48 v1 v2, 2-TS-2068, ROM, 16kRAM
User avatar
gammaray
Posts: 590
Joined: Sun Apr 17, 2016 2:44 am
Location: Texas

Re: "Professional" Keyboard TI99 Packaging Project

Post by gammaray »

Thanks mooredan for sending me down this road!
5-TS1000,UK ZX81<-Sheelagh, US ZX81, 2-TS1500/KDLX , 3-TS2040 printer, 2-TS2020 cassette decks, ZXPAND+AY, ZeddyNET, ZXBlast, UDG, ZX8CCB, AERCO, BUILDS/REPAIRS ZX Spectrum, ZX80 Minstrel, ZXMAX48 v1 v2, 2-TS-2068, ROM, 16kRAM
Post Reply