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128k toastrack board changesI was working on my spectrums this weekend and opened up my toast rack to look at the possibility of changing out the Electrolytic caps. I was awar…
... get composite video from the RGB out to the composite input ... -
zx80 modulator / composite outI had a couple ZXCCB composite boards I'd purchased a while back and installed 1 in a zx81 and the other in a zx80 this weekend. No problems with …
... installation and I can measure voltage on it so it's ... -
ZX Spectrum video waveformsAll work for this post was done on a ZX Spectrum issue 1 board (16k bytes of RAM only). This was what the Spectrum displayed on the TV screen: [i…
... . Set to +/-1V DC, Offset voltage of -2.5V applied to ... . Set to +/-2V DC, Offset voltage of -1.65V applied to ... -
Issue 2 48k Yellow DisplayHi guys. As the title says, I have an issue 2 that's displaying the typical yellow/green colour screen at switch on. The picture is clear and stab…
... one, no difference.
Replaced voltage regulator.
Tried to adjust ... -
Issue 2 48k Yellow DisplayHi guys. As the title says, I have an issue 2 that's displaying the typical yellow/green colour screen at switch on. The picture is clear and stab…
... one, no difference.
Replaced voltage regulator.
Tried to adjust ... -
ZX Spectrum 128K Toastrack - Quiet AY audio, beeper loudHi, I've got a 128K toastrack Spectrum using a RGB + MIC audio to SCART cable but I'm finding the AY is a lot quieter than the Beeper. Is there an…
Hi,
I've got a 128K toastrack Spectrum using a RGB + MIC audio to SCART cable but I'm finding the AY is a lot quieter than the Beeper. Is there anything I can do?
Many thanks,
Ruairi -
Spectrum +2 various problemsHey there, I just recently acquired a Spectrum +2 and it's got various problems with it. First off, I get a rolling picture through both RGB and comp…
... a rolling picture through both RGB and composite video, and I ... -
RRGGBB Color codes in HexI got talking to some students about hex color codes the other day,it was not the topic under discussion more an aside. My students seemed completely…
... the default color selector with RGB sliders that came with the ... -
Just had the weirdest power cut ever Oothis morning i was posting Johnny Cash songs on google+, then i took the dog out. Came back noticed the downstairs lamp was flickering so thought it …
... same, said it was high voltage? and would be on about ... -
A strange issue with a +2 SpectrumHello everyone! I am having a problem with one of my Spectrums, a +2 Grey Case. It has a strange picture on the composite video output, like doub…
... /> I checked the voltages. On RGB analog i have perfect picture ... new TV does not have RGB inputs on the SCART socket ... /> Do you have and interesting RGB to Component converter schematics i ... -
Adding touch events to JS SpeccyPlayed around with adding touch events to jsspeccy2 yesterday. I got it detecting RGB values of individual pixels on the spectrum screen so it can (e…
... yesterday. I got it detecting RGB values of individual pixels on ... -
Issue with loading on a +2 (Grey)Hello together, I have a problem with my newly aquired (and first ZX Spectrum + 2 Grey). It isn't possible to load any game at all, because the…
... a Sony PVM by a RGB connection which is led through ... -
Are there any differencies between Speccies in different countries?I am asking for differencies of ordinary Speccies, not clones. Can I travel to foreign country, buy Speccy from fleamarket and except it will run at …
... from the country with similar voltage? Different countries have different voltages ... buy some power supply with voltage selection switch from electronics store ... -
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 …
... sockets and also replaced the voltage regulator with a DC-DC ... -
Spectrum 48k Power Supply?Guys - I've got a Spectrum 48k inbound from the UK. I want to scrounge a power supply to use when it arrives. What size jack did it use and what ar…
... are the specs on the voltage and current for the original ... -
Repair Zx Spectrum +2 Blackhello there, just found a Zx Spectrum +2 Black edition Issue 1 board that doesnt appear anything on the screen, even led dont power on,i have tes…
... the out put with the rgb socket and the custom red ... -
RGB - Scart Cable for Spectrum+ 128 (Toast rack)Can anybody point me to a source for one of these? Thanks.
Can anybody point me to a source for one of these? Thanks. -
Issues with Spectrum 48K on SCART input of LCD displaysHi *! I'm new to the forums, but not new to ZX Spectrum. I have bought a ZX Spectrum 48K in 1983 and own it since. It was stored some 20+ years on…
... way than replacing capacitors or voltage regulator, I will try. But ... -
+2 grey - datacorder on/off switch?Hi everyone. Building a simple on/off switch to power up/down the tape deck will eliminate the noise in sound output? Is this a safe approach or …
... the heat generated by the voltage regulator)? -
128K Toastrack (Noisy video output)Hello there guys! Need all of yours guides and advices. Some time ago I bought a nice looking 128K from eBay (motherboard v6K) and put it aside for…
... with a new ones, 7805 voltage regulator, TR4 and TR5 transistors ... -
Understanding tape edgesI've never done any tape reading code. But I've read about these "edges" on multiple occasions. Trouble is I don't understand what they heck they are…
... incoming sound be interpreted as voltage? Does it depend on frequency ... happen if I simply deliver voltage instead of sound to EAR ... -
Frying a 48K ZX Spectrum (revision 4A) with 10 V instead of 5 VHello I got a used zx spectrum. When I opened it up, there was no 5 V positive voltage regulator at the 10 V power inlet. Instead what would be in…
... was no 5 V positive voltage regulator at the 10 V ... this doesn't step the voltage down from 10 V to ... -
No video output from Spectrum +2 (light grey)Got a strange issue with my Spectrum +2 light grey edition. It was working fine then all of sudden it outputs a black screen while I was using it wit…
... ) but if I connect the RGB scart I was able to ... -
ZX Nuvo 128..Hi There, I have built the ZX Nuvo 128 by Superfo, but it has a problem. The machine is working, but the video signal is completely bonkers. I've …
... . I've tried it with RGB and composite. Basically the screen ... -
Recent hardware acquisitionsWell, not actually that recent but I've not had time to look at them until a few days ago... Two Speccy +'s. Both are semi alive. Both have semi d…
... build of one those 'powered' RGB leads (apparently needed) to see ... ' one. Thankfully I had an RGB cable and a suitable power ... -
Confused whether I have a +2A or +2B?I opened up my newly acquired black +2A and what I see is that it's an Amstrad Z0833 Issue 2 board from 1988 . I was changing the resistor to make th…
... the resistor to make the RGB out SCART compliant. Looking at ... -
Some questions about the Timex TC2048/TC2068I have been doing some research about the specs of these 2 machines but I suppose it would be better to ask for advice in the forum since I have neve…
... ) but only the TC2068 has RGB signals on the espansion bus ... ?
The RGB signals are digital or analogue ... be hacked to route the RGB signals to a suitable socket ... -
48k Issue 6a Very sick indeed.Hi Guys. I have a 48k Issue 6a board that shows a white screen with grey border. The white screen has three black squares spaced equally on the le…
... are way off. If the voltage regulator, capacitors, and TR4 and ... -
No Keyboard after recap - ZX Spectrum 48kGuys I am desperate. I did a recap of the ZX 48k board and now the keyboard is not responding to any keypress :-(. I paid attention to the capacitors…
... sometimes a capacitor with higher voltage than the original (should not ... -
Grey ZX Spectrum+2 128k Display problemHello, I have a grey ZX Spectrum+2 128k. I have the original power supply and I have recently tried to connect it up to a TV. The system appears…
... TV. I then tried an RGB to Scart Cable which is ...
