Search found 46 matches

by protek
06 Aug 2015 14:36
Forum: HARDWARE
Topic: Replacing a 4116 VRAM with a more reliable 4164 - Courtesy o
Replies: 8
Views: 11536

Re: Replacing a 4116 VRAM with a more reliable 4164 - Courte

The use of 4164s is a cheap and relatively easy way to replace the faulty 4116s but the Spectrum hobbyists have a more elegant solution too: http://zx.zigg.net/LRR/ Of course this can't be directly plugged into an MTX due to different arrangement of chips but I bet the same schematic could be used t...
by protek
06 Aug 2015 14:14
Forum: HARDWARE
Topic: Screw at MTX case bottom
Replies: 5
Views: 6332

Re: Screw at MTX case bottom

Ok, then I think I have the correct screw in mine.

Thanks!
by protek
06 Aug 2015 13:49
Forum: HARDWARE
Topic: Screw at MTX case bottom
Replies: 5
Views: 6332

Re: Screw at MTX case bottom

I take you mean this one: http://www.primrosebank.net/computers/m ... emoved.jpg

Well it shows that the screw is anodized. Mine isn't. Is it supposed to be a countersink screw?
by protek
06 Aug 2015 13:15
Forum: HARDWARE
Topic: Screw at MTX case bottom
Replies: 5
Views: 6332

Screw at MTX case bottom

What type should the screw at the bottom of the MTX case, apparently securing the motherboard, be? I've been looking at the screw in mine and I'm not sure whether it's an original screw or not.
by protek
05 Aug 2015 07:51
Forum: HARDWARE
Topic: Replacing a 4116 VRAM with a more reliable 4164 - Courtesy o
Replies: 8
Views: 11536

Re: Replacing a 4116 VRAM with a more reliable 4164 - Courte

Nice work guys! I've done the same hack on one of the Spectrums that needed the lower RAM replaced. I had an easy access to 4164 chips, so I went and modded those.
by protek
05 Aug 2015 07:00
Forum: INTRODUCE YOURSELF
Topic: New MTX owner reporting in
Replies: 2
Views: 5834

New MTX owner reporting in

Hello everyone! I just recently acquired my first Memotech, an MTX500. It came with no PSU but that's in the works. As I said, this is my first MTX but I've seen one in an computer magazine ad back in the 80s and I've been itching to own one pretty much ever since. Back then I had a Vic-20 and a C64...