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4116 DRAM for 48KSomeone told me I got faulty RAM in my broken 48K. They should be 150ns, right? What would be a good place to buy them from?
[QUOTE=RetroTechie;324904]It worked... partly.:-? Machine ... -
SRAM replacement for lower 16KSome time ago I wondered if it were possible to replace the lower 16K RAM of a 16K/48K Spectrum with a single SRAM chip. You know, those pesky 4116 D…
[QUOTE=RetroTechie;335848]
[list][*]Schematic should ... -
Issue 2 Spectrum overheating keyboard membraneI think I have an issue 2 ZX Spectrum. I don't want to take it apart again as I had problems replacing the keyboard membrane. With Interface 1 conne…
... DC voltage as explained in RetroTechie's post.
I ... -
NEC CPU - problem?I wonder if I should substitute a NEC CPU in a grey +2. Does anyone else had problems with NEC CPUs inside ZX Spectrum. Some time ago I had a Spectr…
[QUOTE=RetroTechie;338090]That's a definite ... -
Thinking of selling my +2 A?Hi!, The time has come to clear all my 'gear'....4 kids in the house and very little room:( I have 2 machines I want to sell! 1 boxed ZX Spectr…
[QUOTE=RetroTechie;352994]It would help to ... -
upgrades what you looking for?i start working for upgrades for ZX, but i'm Atari specialist and i don't know exactly what you need for ZX. On the moment i have DIVIDE in stock, an…
[QUOTE=RetroTechie;352998]Hmm.. care to share ... -
Trouble with Spectrum 48kI think it is a Rev 3 (Issue 3 on the motherboard). The screen has weird characters, instead of text, and the keyboard is not responding (although it…
[QUOTE=RetroTechie;384406]You mean the Sinclair ... -
Dead 48K Speccy.Blow this up as a child... thought I'd get it down from the loft and see if I can repair it. Upon power up, it displays this: [IMG]http://i266.photo…
[QUOTE=RetroTechie;384750]Looking at the photos, ... -
I bought my first ZX Spectrum 48k, now what ?Hi guys ! I recently go to Brussel in Belgium and found a ZX Spectrum at a "flea market" (sorry, I don't the correct word for that, let's call it a …
[QUOTE=RetroTechie;386106]The composite video signal ... little strange:
[QUOTE=RetroTechie;386106]The two red wires ... -
Repair options for my own dear old Spectrum 48k?Hello all, This is my first post to this wonderful forum, which is part of a truly great website! My name is Arnold, and I live in Utrecht, The Nethe…
... for your replies!
@RetroTechie:
Indeed, my first motivation ... appreciate your offer to volunteer, RetroTechie! I?ll remember it for ... -
PC200 bootdisk and monitor connectionI picked up a PC200 today and it seems to work when connected to a TV set. There is one 3,5" disk drive, but what does it need to boot? CP/M? DOS vX,…
[QUOTE=RetroTechie;398668](emphasis on "new" added ... -
which one bit of hardware would people want re-made?I'm just curious in the sense of I see interface 1's go for a fair bit on ebay and also multiface units etc.. so whats the one thing that you don't …
RetroTechie, looks like pentagon after compression? Lol, -
which one bit of hardware would people want re-made?I'm just curious in the sense of I see interface 1's go for a fair bit on ebay and also multiface units etc.. so whats the one thing that you don't …
RetroTechie, are you the person who makes the ones out of the rubber key speccys and instead of the edge connector it has the USB ports? I saw that on youtube a fair while ago.. it's running linux etc? -
which one bit of hardware would people want re-made?I'm just curious in the sense of I see interface 1's go for a fair bit on ebay and also multiface units etc.. so whats the one thing that you don't …
[QUOTE=fog;399380]RetroTechie, are you the person who ... -
using ic/chip holders ?advisable or not to put them in an original spectrum? I mean to save soldering in the future, if I'm gonna be having the machine fixed. I saw them …
[QUOTE=RetroTechie;401862]....eg. rip a PCB ... -
zx81 repairare they easy or very tricky to fix, just curious? getting one , that displays but no cursor.. so hopefully I can get parts to fix it. I started off…
[QUOTE=RetroTechie;403010]What exactly do you ... cursor" ? :-?[/QUOTE]
thanks RetroTechie, I will have to wait ... -
zx81 repairare they easy or very tricky to fix, just curious? getting one , that displays but no cursor.. so hopefully I can get parts to fix it. I started off…
[QUOTE=RetroTechie;403265]..... better have a look ... -
zx81 repairare they easy or very tricky to fix, just curious? getting one , that displays but no cursor.. so hopefully I can get parts to fix it. I started off…
[QUOTE=RetroTechie;403265] Replacement ULA chips are ... -
PentEvo/ZX Evolution PreviewCheck this -> [url]http://www.youtube.com/user/3ASOFT[/url] some Videos showing the PentEvo/ZXEvo ([url]http://www.nedopc.com/zxevo/zxevo.php[/url])…
[QUOTE=RetroTechie;403329]While the old-homecomputer- ...
