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WANTED: ULA chip for Issue two SpectrumHello, I fired up my Issue Two ZX Spectrum a couple of weeks ago, and it seems my ULA chip is failing again. Has anyone got a spare working chip the…
Hello,
I fired up my Issue Two ZX Spectrum a couple of weeks ago, and it seems my ULA chip is failing again. Has anyone got a spare working chip they'd be willing to sell? Please PM me if you can help.
Regards,
Kamil -
SPECTRA - RGB SCART Interface for 48K SpectrumSince the launch of the SPECTRA interface back in June 2012, some discussion of it has appeared in the forums in the past (mainly [URL="http://www.wo…
... interface for the 16K/48K ZX Spectrum, with the primary function being ... ability to extend Spectrum BASIC via a ZX Interface 1 compatible ... of 128K Spectrum, I could create a new board for use ... connectivity and to address the issue of attribute colour clash, not ... -
issue 1 wire broken offHi there have just purchased a issue 1 zx spectrum 48k but there is a wire off on the underside of the board. It is from the ula one goes to the keyb…
... there have just purchased a issue 1 zx spectrum 48k but there is ... on the underside of the board. It is from the ula ... of the inderside of a issue 1 -
I wanted a ZX spectrum issue oneHello guys, i am looking for a spectrum issue one for completed my collection, if anybody had one , i can buy it or change it for any other thing, ma…
Hello guys, i am looking for a spectrum issue one for completed my collection, if anybody had one , i can buy it or change it for any other thing, many thanks. -
Ben Versteeg's September sales[COLOR="Blue"][B][SIZE="6"]Add-ons[/SIZE][/B][/COLOR] [IMG]http://benophetinternet.nl/hobby/vanmezelf/sales/line.jpg[/IMG] [IMG]http://benophetinter…
... B]ZX8401 / PCF1306P / 40058 (48K issue 6 and 128K model memory ... video and the transistor placement error is solved
- ... [B]Discounts when buying a ZX Spectrum:[/B]
- Kempston Joystick ... too
- Very small board, fits through mailbox: cheap ... -
ZX Spectrum problem, intermittent picture lossHi I'm trying to resurrect An issue two board spectrum, I did the composite bypass and managed to get the picture constant and steady after playing a…
... 'm trying to resurrect An issue two board spectrum, I did the composite ... ideas gratefully received.
The board is in a dk'tronics ... -
ZX Spectrum Plus Versions.Did they ever do a 16K version of the Spectrum Plus? I have just got an early one (Issue 3), with a low serial number 003-037776, and it is fully po…
... Spectrum Plus?
I have just got an early one (Issue ... unless this was a 16K board that slipped through quality control ... -
Ben Versteeg's November sales[COLOR="Blue"][B][SIZE="6"]Almost ready[/SIZE][/B][/COLOR] [IMG]http://benophetinternet.nl/hobby/vanmezelf/sales/line.jpg[/IMG] [IMG]http://benophet…
... too
- Very small board, fits through mailbox: cheap ... B]ZX8401 / PCF1306P / 40058 (48K issue 6 and 128K model memory ... video and the transistor placement error is solved
- ... [B]Discounts when buying a ZX Spectrum:[/B]
- Kempston Joystick ... -
Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…
... I recently purchased an Issue 2 Sinclair ZX Spectrum 48K, Upon first powering ... when I powered up the spectrum again, the copyright Sinclair ... turning back on the Spectrum just to see if ... ULA is on the board however it has a ... ULA is on the board and post it on ... -
ZX Spectrum 48K Issue 3, loss of -5V rail.Hi all, I've googled this problem and poured over the electrical diagrams for the circuitry concerning the power supplies and I believe I know what …
... /> I recently purchased a 48K Spectrum from eBay. On powering up ... bottom left corner of the board.
All voltages are present ... -
Spectrum Issue 2 - TR6 ReplacementI've just got my hands on an Issue 2 ZX Spectrum, that needed some repairs. The picture quality after doing a composite modification was pretty shodd…
... got my hands on an Issue 2 ZX Spectrum, that needed some repairs ... top of the Z80 in Issue 2) has been broken off ... -
ZX Spectrum +2 (grey case) voltage converter circuit oddity.I'm working on repairing one of these and have encountered a possible problem and I'm not sure what I can best do about it, if anything needs to be d…
...
The area of circuit board that houses the voltage converter ... capacitors.
The Spectrum now works, but I noticed ... -12V -> -12.4V
Spectrum under repair: 12V -> 11 ... ?
[IMG]http://zx.zigg.net/misc/ZX_Spectrum_+2 ... -
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…
... recently purchased an attic-slumbering ZX Spectrum +2 (grey – the one with ... I’ve done some soldering (schematic pictures attached):
1. ... -upper pin to R4 (on schematic - between R4 and TR2) ... OK? (May be related to issue 2 below).
2. Datacorder ... -
Looking for advice on building a HarlequinNew member here. From the US. My first computer was a Timex Sinclair 1000 back in the early 80s (in fact, I got one of the first batches sold in th…
... ZX Spectrum but never could get past the PAL/NTSC issue. ... want to have that Spectrum experience that I missed ... got a Rev G board inbound and I've ... I'm thinking the ZX Spectrum+ but wanted to run ... /> Looking at this Harlequin schematic, it just screams out to ... -
zx spectrum Z70830 issue 2i have the above +3 and have done the video and audio mods to the board. the video is fine now but the audio is extremity quiet, if i bridge r64, r7…
... and audio mods to the board.
the video is fine ... .com/technical/fixing-audio-distortion-spectrum-3/
this is ... -
Another Spectrum is brought back to life.Hi Spec-chums. I have been having bit of busy afternoon with repairs today. I've brought back to life a Panasonic Super-VHS recorder, and more intere…
... more interesting an issue 2 16k ZX Spectrum board. The issue 2 board was part several ... />
So to begin, this board was an eBay buy. Described ... in the auction showed the board was powering up but ... planning to fit the board into a ZX Renew repro case. But ... -
48k issue 4B display problem etchi,, i have a zx spectrum 48k issue 4B with a display issue it has wavy lines in both the border and paper,some colours seem worse than others ie red…
... have a zx spectrum 48k issue 4B with a display issue it has wavy ... composite mod with the same issue.. i have tried everything short ... for hours never has any error..checked resistors etc _5v,12v ... -
New stereo audio board for fitting on AY chip - interested?Hi, I developed a small board that fits on the AY chip inside 128K ZX Spectrums: [IMG]http://www.benophetinternet.nl/hobby/vanmezelf/stereo_audio.j…
... has made such a simple board before, so I doubted if ... that you found the small error.
Maybe I can explain ... circuit, and your values and schematic are much nicer - and take ... jumpers would be inside the ZX Spectrum after installation.
So ACB ... -
Composite picture qualityI have read many many discussions here about the composite video modification of the Spectrum 16/48K models. I have choosen one of the simplest comp…
... a scanline above, when ZX Spectrum hasn't even output the ... characters were sent by the ZX Spectrum!
Which leaves ... permitting)
Issue 3B schematic
C5 1uF ceramic
board issues (I have mainly tried stuff on an issue ... -
Getting a +3 working again (keyboard & tape socket issues)So, as part of my Spectrum restoration project I will also try to tackle the problem child among my fleet, the +3. PROBLEM ONE: Ever since I firs…
... . Might that also be an issue here?
[ ... be buried under the circuit board and [url=http://www. ... ://zxnet.co.uk/spectrum/schematics/"]Schematics for the ZX Spectrum +2A/+3, + ... /> At least, looking through the schematic, I can see pin 30 ... -
Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
The Issue 6a ZX Spectrum Issue 6A
Here is ... to make out my own schematic!
They were all ... the left side of the board . -
48k packed up after cap changeHi all, I'm relatively new to the Sinclair world, my 8-bit repairs in past was lurking in the dark sides of Acorn, Amstrad and Commodore! I've got…
... as shown on the Joulespercoulomb/zx.zigg.net youtube channel - ... circuit on the board. However, only the issue 6A now works ... /> [*]Print out a schematic for the relevant issue board, then check that you ... on some issue boards, there is a screen print error for ... -
48k packed up after cap changeHi all, I'm relatively new to the Sinclair world, my 8-bit repairs in past was lurking in the dark sides of Acorn, Amstrad and Commodore! I've got…
... /visible bad traces on this board are all in the lower ... it!)
Watching a zx.zigg.net video he noted ... /> "Print out a schematic for the relevant issue board, then check that you ... on some issue boards, there is a screen print error for one ... -
ZX Spectrum rescued from a friend, has Issues.Hi guys, I've recovered this ZX spectrum 48K from a friend. It's a 1984 ISSUE 6A. He told me the last time it was turned on was about 30 years ago!.…
... previous logic board revisions (aside from the very rare Issue 5) is ... then that part of the schematic is virtually identical to the ... any peripherals attached to the Spectrum? If you do, please ... never used (Like a Virgin, ZX Spectrum, LOL) correct me if I ... -
"Self Isolation" and Speccy PCB repair"These Days" of "home self-isolation" , particularly on rainy days , I reckon I will have more time to hone my Speccy PCB repair skills which are s…
... Issue 4S Spectrums . This was due to a case labeeling error ... the centre of the board to the right of ... This time I found the board easier to work on ... it . With this particular ZX Spectrum + it now seems to ... think this is a Taiwanese ZX Spectrum Plus . I will ... -
Issue One (2020)My version of the Issue One PCB under development: [img]http://fotogalleria.info/pub/ZXSpeccy/IssueOne/ZXi1_PCB_01.jpg[/img] [img]http://fotoga…
... trying to recreate an issue one board, but Sinclair itself did ... of the ZX Spectrum, including modifications in between different issue boards.
zx-spectrum-16k-48k-and-plus- ... schematic may not be the actual values as used in an issue ... -
Glad to see the ZX Spectrum is in the Science Museum in London.About time too! Last tiem I looked there was just the ZX-80 but the Spectrum is in there now too, alongside a pong-clone and a Vic-20.
About time too! Last tiem I looked there was just the ZX-80 but the Spectrum is in there now too, alongside a pong-clone and a Vic-20. -
ZX PC Interface : The manual, schematics and more info... ZX <-> PC Interface ------------------- Contents 1) The ZX <-> PC Interface 1.1) What is it? 1.2) What does it do? 2) Install…
... Interface is designed for the ZX Spectrum to communicate
... Connect the interface on your ZX Spectrum like any other interface < ... commands are available on the ZX Spectrum.
The normal ... This is not a real schematic, but the connections on ... -
[NEW]: Spectaculator 4.0Hi everyone, Finally managed to finish it... enjoy! --- [NEW]: Spectaculator 4.0 Spectaculator is a Sinclair ZX Spectrum emulator for PCs runnin…
...
Spectaculator is a Sinclair ZX Spectrum emulator for PCs running Windows ... start or stop in error. If you do find ...
o Switchable issue 2 / issue 3 keyboard emulation.
< ... reports R Tape
loading error.
o ... -
ANN: ZXF issue 4 now publishedIt gives me huge pleasure to announce that issue 4 of ZXF magazine is now available for free download at [url="http://www.zxf.cjb.net."]www.zxf.cjb.n…
... huge pleasure to announce that issue 4 of ZXF magazine is ... 26 pages of the 1984 ZX Spectrum Software and Peripherals Catalogue (I ... />
This issue features a focus on new Spectrum games, a feature ...
