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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…
... an Issue 2 Sinclair ZX Spectrum 48K, Upon first powering ... when I powered up the spectrum again, the copyright Sinclair research ... and turning back on the Spectrum just to see if ... what ULA is on the board however it has a ... what ULA is on the board and post it on ... -
Which ULA to fit in which issue SpectrumI spent a little while studying the resistor changes on page 30 of the ZX Spectrum 48K service manual. They all concern aspects of the video circuit …
... 30 of the ZX Spectrum 48K service manual. They ... the correct ULA for that board.
All ... br /> Issue two is the board with the widest range of ... version your Issue two board is configured for is ... brown black orange) your board is configured for a 6C001E ... -
Power connector for 48K SpectrumI need a new power connector for an Issue Two 48K Spectrum board, quite an early one. Where can these things be obtained? Someone must know! There mu…
I need a new power connector for an Issue Two 48K Spectrum board, quite an early one. Where can these things be obtained? Someone must know! There must have been a load of these sourced for Harlequin projects, and also for Spectrum fixes. -
Spectrum+ keyboard issueHi I have a spectrum+ (issue 4s board) where the 1-5 keys do not work. I have replaced the membrane and checked for continuity. I have also tested …
... />
I have a spectrum+ (issue 4s board) where the 1-5 ... -
ZX-FPGA dev boardI've been sporadically working on this: [IMG]http://photo.alioth.net/tmp/spectradvi.png[/IMG] It's an FPGA dev board for the Spectrum. It uses a CP…
... s an FPGA dev board for the Spectrum. It uses a CPLD ... ll operate independently from a Spectrum. It'll have a ... 30+ MHz range. The board is a 100mm x 100mm ... board, 4 layers (with solid ... the FPGA can control the Spectrum's reset circuit, but ... -
Dirty +2 board. Should I clean it?Hi, A friend donated a Spectrum +2 to me. Naturally, after testing it (it works), I opened it up to see how hard a life it has had. The board is qu…
... br /> A friend donated a Spectrum +2 to me. Naturally, after ... br />
The board is quite dirty with some ... residue. Looks like the board has been submersed in ... pic shows the tape drive board:
[IMG ... />
The main board is the same, albeit not ... -
Spectrum rubber key memory upgradeIf a 16k spectrum has a 32k fox upgrade kit installed anyone any idea what board revision we would be expecting to find in this machine? And was this…
If a 16k spectrum has a 32k fox upgrade kit installed anyone any idea what board revision we would be expecting to find in this machine? And was this an after market kit or one offered by sinclair?:grin: FANX -
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 & ZX81 PSU Strange VoltagesHi all I've just refurbished my ZX spectrum PSU after i accidently broke one of the wires i soldered the joints to the PCB nicely and all seems to b…
... 've just refurbished my ZX spectrum PSU after i accidently broke ... is a regulator on the board??? -
Video fault on issue two ZX boardI've trawled the Internet and drawn a few blanks as to where to look to resolve the fault with my issue two board. I'm hoping a few of you knowledgea…
... I powered up the Spectrum connected to the RF ... a working Spectrum 48k with a 3B board I've ... exhaustive tests yet), this Spectrum otherwise works, it's ... is all okay. The board features the spider or ... it is a fairly early board from reading around.
... -
Mods to build a Spectrum Games console?The iccle boy asked to keep the Spectrum hooked up to the TV permanently to be used as a games console. I thought yeah I could do that, have it sat n…
... boy asked to keep the Spectrum hooked up to the TV ... controllers but on a real Spectrum I'm not sure.
spectrum joystick interface board that could communicate with ... -
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 ... I found:
Good Spectrum: 12V -> 11.3V ... - ... 12V -> -12.4V
Spectrum under repair: 12V -> 11 ... -
New multisystem floppy interface (spectrum 16Kb/+2A/CPC464)Dear all, I would like to show you my new extern floppy interface. Same interface can be used for both, CPC and Spectrum systems. CHARACTERISTICS …
... used for both, CPC and Spectrum systems.
... - Connectable to Spectrum +2A
- Connectable to Spectrum 16Kb + Superupgrade.
spectrum 16Kb due to insufficient ... br />
Auxiliar board to connect a Spectrum:
[ ... -
128K Spectrum - can't figure out what's wrongLong time no post :) So I have this 128K Spectrum (+2 ROMs) that I cannot for the life of me figure out where the problem lies. Let's take a look a…
... /> So I have this 128K Spectrum (+2 ROMs) that I cannot ... .
Clearly a circuit board fault? Been up and down ... the whole damn board. I can find no shorted ... -
Spectrum +2a memoryHi all, Happy New Year. A quick question, I have a Spectrum +2a that I am seeing a very intermittent fault, once every 20 - 30 power ups. I plug…
... quick question, I have a Spectrum +2a that I am seeing ... /> I plugged in the diagnostic board and when it happens it ... -
Using an EPROM in a 48K SpectrumThere are plenty of guides as to how to do this floating around, however I didn't like the fact that you can't then plug in the standard 27128 ROM ch…
... 27128 ROM chip after the board is modified.
So ... -the-rom-of-a-zx-spectrum-with-an-eprom/"]here[/URL ... [/IMG]
Flipping the board over, to take care of ... -
Joytsick Interface damaged SpectrumHello All, Sob.. I am a plonker, I did the cardinal sin, I was testing a bunch of joystick interfaces that I got off ebay and one didn't have the ke…
... don't have a working Spectrum 48K+ (6A)!
I ... prior to me owning the board) to it so I'm ... test it. Basically under the board there's a resistor linking ... -
Archon: C64 / ZX SpectrumArchon the board/strategy game [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0000243[/url] is regarded as an all time top 10 classic on the…
Archon
the board/strategy game
[url]http://www.worldofspectrum.org/infoseekid.cgi?id=0000243[/url]
is regarded as an all time top 10 classic on the C64 and an above average game on the Spectrum.
Why is this? -
Spectrum +2 (grey) RAM issueHi, I?ve got a ZX Spectrum +2 (grey) with what I think is a RAM issue. I used to be able to load games very reliably by playing converted TAPs and …
... /> I?ve got a ZX Spectrum +2 (grey) with what I ... it being remedied on my board but I don't see ... -
Fully refurbished ZX Spectrum 48K boards incl. ULA- Including ULA (version that [URL="http://www.bytedelight.com/?p=41"]corresponds to the board issue[/URL] - click to find out more about ULA version…
... /?p=41"]corresponds to the board issue[/URL] - click to find ... with DivMMC EnJOY!
Board issues available: 3, 3B, 4A ... ://www.bytedelight.com/?product_cat=zx-spectrum-48k-refurbished-boards[/url]
Spectrum+2 Tape Deck Buzz<p>I've been messing with a Iss3 0500 Spectrum +2. So far I've replaced the electrolytic capacitors, flipped the transistors, add…
... messing with a Iss3 0500 Spectrum +2. So far I've ... (P12) and the datacorder circuit board?Spectrum/QL/ZX81/Lambda and other parts on EbayI currently have a few auctions running on Ebay, which might be of interest for some of you: (Black) +2 main board + lower case: [url="http://www…
... :
(Black) +2 main board + lower case:
[url="http ... ]
(Black) +2 main board:
[url="http://www.ebay ... />
Spares and repairs for Spectrum/QL/ZX81/Lambda and Enterprise ...ZX Spectrum+ adviceHey all, I just got a ZX Spectrum+ from eBay and I'm not sure yet what to do with it. I wanted to first take a peek inside, see what issue board it i…
... , I just got a ZX Spectrum+ from eBay and I'm ... peek inside, see what issue board it is, and check out ... for a never touched ZX Spectrum+?
Some images: http ...No colour - Issue 2 SpectrumThis one is driving me mad - any suggestions appreciated. I have an issue 2 Spectrum with no colour at all. I found the 12v rail was at just over …
... /> I have an issue 2 Spectrum with no colour at all ... on a different issue 2 board to verify it wasn' ... a fully working issue 2 board to check against at ... made a repair on another board (faulty RAM), I will ... than the video circuits? The board traces all look OK, ...12V Rail - Spectrum 48kOkay - I may just be having a senior moment here, but I'm running out of ideas. I'm working on a Spectrum Issue 4S board,and have had to remove al…
... 'm working on a Spectrum Issue 4S board,and have had to ... checked on an issue 2 board here with no lower RAM ...Video Problem - Spectrum 48kYet again I come seeking help.... Can anyone point me in the direction of anything that explains the video generation circuit on the Spectrum? I'v…
... circuit on the Spectrum? I've an issue 3B board which won ...Recreated ZX Spectrum thoughtsI have a recreated ZX Spectrum (and a Vega and a 48K with SMART) and while I know it is not well regarded I actually quite like it. The app is "ok" a…
... if the recreated ZX Spectrum being Bluetooth could work ... run an emulator for Spectrum that works on TV ... even and "in app" Spectrum game store. The Vega ... sure if the recreated Spectrum will connect to the ... the recreated Spectrum and I can see a board and micro ...Internet enabling a SpectrumHi, Yonks ago, I floated the idea of using one of these: http://www.mycal.net/old/wsweb/img/s7600a.pdf ..to Internet enable a Spectrum. I d…
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..to Internet enable a Spectrum. I did use of these ... need to always be on board.The chip is obsolete now ... Arduino (e.g. Ethernet sub board) would be the best option ...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…
... on a clone pcb board for the zx spectrum 128k for the ... about the project and ZX Spectrum stuff in general :)
... below : :)
The ZX Spectrum was my favourite thing in ... custom chip usage
• Fully spectrum 128k compatible
• 8 pages ...Need some help repairing an issue 3 spectrumI am looking for some help repairing an issue 3 speccy, here's what I tried so far. The speccy is not booting up correctly, when using the diagnos…
... are working fine in another spectrum, also putting a working ULA ... lower ram, and turned the spectrum on, and this doesn't ... some work done on the board before I got it so ...
