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Toastrack PCB verisonsA quick question - what are the main differences between the issue 6k and issue 6u motherboards in the toast-rack? Is one considered to be more relia…
A quick question - what are the main differences between the issue 6k and issue 6u motherboards in the toast-rack? Is one considered to be more reliable, etc than the other? -
Issue 3 /3b power rail improvements<!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:AllowPNG/> </o:OfficeDocumentSettings> </xml><![endif]--> <p class="MsoNormal">Hi F…
... to power rails around the pcb and
improve reliability of ... -
Spectrum USB KeyboardI know you can buy these but how do you make one . What I am thinking of be similar to the type described in Issue 1352 of Micro Mart at page 45 .The…
... . There is a custom USB pcb . Is this an Arduino variant ... -
+2 Grey versionsThis thread is an attempt to pin down the various hardware revisions of the +2 Grey. If anybody can provide further images from their machines or fur…
... three main revisions of the PCB, within these there appear ... date code for the PCB batch is recorded on the ... on the rear of the PCB.
[i] ... stocks of the toast rack PCB were used up?
... bottom left corner on the PCB in the silkscreen
... -
Hardware preservation categoryI’ve no idea what anyone will think of this, but I’ve often found it really tough to get the tech info that I’ve needed for emulation, and am wonderi…
... category would include discussions on PCB photography, drawing of schematics, dumping ... -
Another silly hardware idea - RAM Pack adaptorHow about a mini bit of PCB that adapts ZX81 RAM Packs to replace the address space of the Spectrum's ROM? I guess practically you'd need a way to…
... about a mini bit of PCB that adapts ZX81 RAM Packs ... -
Superfo Harlequin Rev D Documentation wantedI have a Rev D Superfo Harlequin PCB. I would like the documentation (schematic and board layout files), but I get a [b]Not Found[/b] error when I cl…
... a Rev D Superfo Harlequin PCB. I would like the documentation ... -
Which joystick design?Dear World of Spectrum, As some of you may remember, about a year or so ago I embarked on a quest to design an arcade stick for PC and Mac compute…
... the joystick/buttons to the PCB). I currently have a Sega ... -
New K-MOUSE 2016-LPI plan make new PCB version of K-MOUSE 2016. This version will oneboard, horisontal, without cinch connector. "LP" at end sign LOW PRICE. Price of ho…
I plan make new PCB version of K-MOUSE 2016. ... as BUS EXPANDER.
PCB without components may be used ... with reset button.
PCB without PIC chip and mouse ... />
Any ideas for new PCB ? -
Bizarre ZX Spectrum faults (also possibly relevant to Spectranet compatibility problems).I'm attempting to repair an issue 4A 48K ZX Spectrum and am encountering some very strange problems. For my own records I've given this computer the …
... cleaned both sides of the PCB very thoroughly with a flux ... -
A ZX Printer returns to actionAfter quite some messing about, I've got my second printer working. There were 2 reasons it sat idle (apart from the obvious being it's a sh*tty 30 y…
... was a short on the PCB too. After a cleanup, I ... -
Pentagon 128k Rev. 2011 (blue PCB)Fully confirmed working, various original design issues fixed (instable power rails, joystick adapter not working, FLASH not working) PSU and 3.5" d…
Fully confirmed working, various original design issues fixed (instable power rails, joystick adapter not working, FLASH not working)
PSU and 3.5" disk drive included
Asking price: 120€ without keyboard, 150€ with Fuller FDS keyboard
< ... -
Small batch of ZX-Unos outside SpainI am a member of the ZX-Uno team. We have launched a sucessfully crowdfunding campaign of 250 ZX-Uno, but they are all sold (mostly in Spain). I apol…
... in 2013, there were 6 PCB revisions and at this time ... -
Speed (nano seconds) of memory chips ZX SpectrumThe ZX Spectrum uses 4116 memory for the lower memory, which can be replaced by other sorts or a whole, modern, module, but when searching for 4116 m…
... the wired one on the PCB) because half of the RAM ... -
Redesigning the ZX Spectrum 128k - A lifelong dreamHello, I am myPinballs (Jim) and i run a small business here in the uk making replacement 8-bit hardware pcbs for arcade pinball games as well as…
... been working on a clone pcb board for the zx spectrum ... wanted to create a 128k pcb board as i love the ... -
Rolling display from RGB port on a +2Hi gang, after many years I finally decided today to attempt connecting my +2 to my Japanese RGB monitor. Using just the composite video pin only …
... />
I had a Toobin PCB which runs at 24kHz, and ... -
ZX8401 / PCF1306P / Amstrad 40058 ReplacementsHi all, I took the schematics and layout from [url="http://8bit.yarek.pl/upgrade/zx.zxmux/"]here[/url] a few weeks ago, and ordered some PCB's. Gl…
... weeks ago, and ordered some PCB's. Glad to report the ... -
Upper memory issueZX Spectrum 48K, issue 2, boots fine. Lower RAM OK. When tested with the new test ROM in the Diagboard, for all upper RAM tests "FAIL" is shown. I…
... see anything particular on the PCB for the socketed IC22 (which ... ) with another, working, issue 2 PCB.
Replaced an SN74LS157N ... a faulty ULA. The mini-PCB is there, but the IC ... -
Spectrum +2 (grey): Mod- and operation- related advices needed.Dear Sirs and Ladies, Please welcome a newbie to the “World of Spectrum” (both to the forum and, well, metaphorically). I’ve recently purchased a…
MK14 keyboard replacementI'm the proud owner of a Science of Cambridge MK14! It seems fully functional, but the keyboard is a disaster - some keys don't seem to work at all, …
... match the spacing on the PCB (5mm), [u]if[/u] I ...ZX Speccy +2A - B&W & snowy RF output + other issuesHi All, I am new to this forum and I am back to the Spectrum world after 25 years. Recently I've bought a second hand +2A (+2B board - Z70833 Issu…
... PSU and on the datacoder PCB. - All voltages are stable and ... every point of the main PCB. All transistors checked and working ...My re-creacton of the Z80 8-bit Universal IDEI looked into my draw with various bits & bobs for PC and I found there a CF-IDE adapter, HDD ribbons and two CF cards. So, I was thinking to myself,…
... , IC sockets, pin headers. The PCB had to fit within the ... drew two variants of the PCB:
1. THT variant
PCB makers. The SMD version arrived ... board and the main ZX PCB. I used wrong type of ...Just a slight bit of track damage...!!!Just a slight bit of track damage to this PCB... These are pictures of the damaged board after stages one and two of cleaning it. [img]https://c1…
... of track damage to this PCB...
These are pictures ...ComCon interface with an auto-fire joystick is possible?I need a little advice on this one, please! I have a konix speedking, with two fire buttons and auto-fire switch. I can use it with the comcon int…
... pin 5 on the ComCon pcb.
But the ... 7 and 9 on the pcb all linked and they are ... a way to change the pcb in order to get auto ... wires and link them to pcb +5V and ground, essentially separating ... considering cutting the traces on pcb to pin 7 and pin ...Timex Computer 2048 restoration projectHi All, I would like to share with you my restoration project of a broken TC2048. Make the story shorty it was my first computer in late eighties …
... repair was challenging because the PCB was overheated in some places ...Upgrading Harlequin 48K to 128K?I noticed this upgrade PCB on ebay for upgrading the Harlequin to 128K: http://www.ebay.co.uk/itm/ZX-Spectrum-Harlequin-48K-to-128K-Upgrade-Addon-PC…
I noticed this upgrade PCB on ebay for upgrading the ... -48K-to-128K-Upgrade-Addon-PCB-UK-SELLER-/322422778271?hash=item4b11e5299f ...New ZX 128K clone PCBhttp://www.sellmyretro.com/offer/details/25385
http://www.sellmyretro.com/offer/details/25385Chrome - ZX Spectrum clone with Italian rootsSome you might know that the Italian ZX Clone been around for a while. The project was started by Mario Prato in 2004 and last year was re-created by…
... around and I bought the PCB earlier this year. I finished ...
