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Spectrum+ and dead keyboardI have a Spectrum+ which had no picture just snow on TV. I found instructions, that it might be regulator 7805, so I changed it. Now I saw something …
Check the diodes for the keyboard. Check spectrum schematics to find them. -
(Re) building a ZX Spectrum laserharpThe Cambridge show is nearing, and I want to bring my laserharp with me. Why? Because it's built around a ZX Spectrum +2: [IMG]http://benophetintern…
[QUOTE=bverstee;645764]
Do you have any startup schematic for this maybe?[/QUOTE]
I will look at work for the last made schematics. It shows the principle and can simply be modified I think.
Greets ingo. -
Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... is this wrong in the schematics (I'm checking both Rev ... -
Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... is this wrong in the schematics (I'm checking both Rev ... -
Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... is this wrong in the schematics (I'm checking both Rev ... -
Sending key presses to the spectrumfor a project I want to send automated keyboard presses to the ZX via a micro-controller. Is it possible to send these through the expansion slot? …
... that is mentioned in the schematics, but it's not connected ... -
Sending key presses to the spectrumfor a project I want to send automated keyboard presses to the ZX via a micro-controller. Is it possible to send these through the expansion slot? …
... that is mentioned in the schematics, but it's not connected ... -
Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... insist on changing the original schematics....
I can see you ... -
Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... . In the Harlequin rev E schematics the output resistor is 42 ... -
Issue 2 headache!Ive got an issue 2 here that firstly had a blown regulator (fixed), now its reading as a 16k machine (its fully populated), ive replaced and socketed…
... the issue 2 and 3 schematics this signal goes via IC23 ... -
ZX 48 issue 4S no s-video possible?No s-video on ZX 48 issue 4S possible? I have had this mod on my issue 4A. But this did not work with my 4S. On C65 is no chrominance signal. Here …
... video out circuit. Check the schematics to find where you can ... -
semi dead speccy 48k who can helpHi forum , i am busy recovering a 48 k speccy issue 3 board unit. With the help of a more experienced spectrum user from the uk , i managed to get…
... include /MREQ. For example the schematics for Chris Smith's Harlequin ... -
semi dead speccy 48k who can helpHi forum , i am busy recovering a 48 k speccy issue 3 board unit. With the help of a more experienced spectrum user from the uk , i managed to get…
... /docs/cpucontrol-1.16.pdf"]schematics[/URL] for /ROMCS generation include ... -
Creating new hardwareThis is slightly off topic, but I hope some of you might be able to help. There is some amazing work on the Sinclair scene, creating new devices and…
... open source EDA tools for schematics, PCB layout and circuit simulation ... -
Z80 new old stockHi. I found this on eBay but ... is there a way we could know they don't hav a faulty M1 line? [url]http://www.ebay.com/itm/Zilog-Z80-CPU-Z0840004PS…
... /> I've laboured over the schematics for these for clues in ... -
Pentagon RAM memoryDoes anybody know or have reference to technical docs, how no contention on RAM access is achieved in Pentagon 128K clone ? Looking at schematics it …
... .[/QUOTE]
Unfortunately the schematics don't seem terribly easy ... -
Does anyone have the Beta 128 schematics?Hi. I was just wondering if any of you had schematics for a standalone version of the Beta 128 interface? I've looked at the schematics of the Pent…
... if any of you had schematics for a standalone version of ... /> I've looked at the schematics of the Pentagon and the ... -
The 1969 Moon LandingsTrying not to sound too much like our 'Cornishdavy' was the Moon landings in '69 faked? [url]http://en.wikipedia.org/wiki/Moon_landing_conspiracy_th…
... . All the data, all the schematics, all the test footage (google ... -
The 1969 Moon LandingsTrying not to sound too much like our 'Cornishdavy' was the Moon landings in '69 faked? [url]http://en.wikipedia.org/wiki/Moon_landing_conspiracy_th…
... . All the data, all the schematics, all the test footage (google ... -
More schematic errorsWhile working on an article for the faq wiki I've located another error on my +2A/+3 schematics which I've now put right, but I have a problem. I ha…
... , and I've uploaded corrected schematics to my website and the ... -
What's the correct Spectrum colour palette?Prompted by the recent SCR-to-GIF conversion thread, I was pondering writing one in Z80 assembler. As I did a LZW compression routine a while ago tha…
... one would think the original schematics/design had some (near-)constant ... -
What's the correct Spectrum colour palette?Prompted by the recent SCR-to-GIF conversion thread, I was pondering writing one in Z80 assembler. As I did a LZW compression routine a while ago tha…
... one would think the original schematics/design had some (near-)constant ... -
128k+ CompositeAm I to understand this correctly but all thats needed for composite video on this model is to run a wire from pin 1 of the RGB port to the phono out…
... the RGB port.
The schematics I have here show it ... -
Fixing a broken ZX Spectrum HELPHello I have no experience with computers predating the PC and this is my first computer of this sort S: One of my father's coworkers gave me his ol…
... the Worldofspectrum website for the schematics (but first open the Spectrum ... -
ZX Spectrum + 2 128K - Video Issue?Hi All, I have just picked up a secondhand +2 and am having a problem with it. :( When I power the unit on and hook it up to my TV with the RF cable…
... , you must have the 128K schematics (available on the net) and ... -
Fixing a broken ZX Spectrum HELPHello I have no experience with computers predating the PC and this is my first computer of this sort S: One of my father's coworkers gave me his ol…
... the Worldofspectrum website for the schematics (but first open the Spectrum ... -
Is the 128K heatsink's TV out modulator kit repairable?I have a 128K+ Spectrum that is working absolutely fine and is giving out the perfect picture from its RGB out socket (with the right cable ofcourse)…
... .de/spc/ZX Spectrum 128+ Schematics.pdf"]http://www.truppel-online ... .de/spc/ZX Spectrum 128+ Schematics.pdf[/URL])
Greets ... -
Ay Real Time Synthetizer SoftwareSpectlemen and Spectladies!It's been a long time that I'd like to ask this.... I ask thee to create a new musical software for our ZX Spectrum machi…
... 't find any information or schematics on the elusive Sinclair MIDI ... -i.html"]Ventamatic MIDI interface schematics and information[/URL]
[URL ... -
Ay Real Time Synthetizer SoftwareSpectlemen and Spectladies!It's been a long time that I'd like to ask this.... I ask thee to create a new musical software for our ZX Spectrum machi…
... 't find any information or schematics on the elusive Sinclair MIDI ...

