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Video on single transistor composite video modification for 48K SpectrumsI made a video on the single transistor composite video mod, using an Issue two Spectrum although it applies to all issues. Much better than the sing…
... /> Picture quality - correct brightness, typical 48K composite full of dot crawl. No miracles ... -video originally had a wire composite mod connected to the extra socket ... I did the single transistor composite mod to the modulator socket, then ... -
Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…
... at that time I had no scope... I have done many ... a state, where there was no picture (AV mod) in cold state, but ... opposite. There was a good picture at the beginning, but it ... and use the RGB or composite output of that, which is ... -
A tally on the number of successful builds of the Harlequin[SIZE=4][COLOR=Green][U][B]A tally on the number of successful builds of the Harlequin.[/B][/U][/COLOR][/SIZE] Please post your successes below :-) …
... need to do the R48 mod, solder in the loudspeaker and ... />
@Ingo: I get no picture from composite, which I guess is the ... not having done the R48 mod? -
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…
... />
@Ingo: I get no picture from composite, which I guess is the ... not having done the R48 mod?[/QUOTE]
I ... hole" ones.
Actually no one demanded a revision "G ... R48 mod does not interact with the generation of the composite signal ... -
Power issues on a 6A 48 K SpectrumHello all! I decided to take another look at my 6A Spectrum that I broke via a bad joystick adapter, I’ve removed the bottom 16K ram and replaced…
... 13v out.
The picture "seems" okay for a Spectrum ... botched composite mod I need to fix to get a clearer picture (lol no ... -
Testing 4116 type DRAMsHappy New year All! I'm managed to find some time to repair some more Spectrums :) woo hoo. I have a couple with busted lower RAM, Sooo, I appr…
... missing) and I get no picture (total black - has composite mod), gets very hot ... -
Help a new user pleaseI love old school games and never had a Sinclair as a kid so thought I would rectify that via eBay! I have a 48k+ Model that was sold as working, …
... and have manually tuned the picture in as best as possible ... am going to do the composite mod once I get time)[/quote ... mic socket too, all to no avail.
Not once ... ’t load, I’m getting no borders or anything other than ... -
ZX Spectrum 48k tape loading issueHi guys I have refreshed a ZX spectrum 48k with a new keyboard layer and front case. The machine will power up and seems to work good. Unfortunate…
... you can see on the picture it should be one eligible ... when pressing a key so no loading+no audio coming out as ... this is due to the composite mod (it is rather simple to ... -
ZX Spectrum 48k tape loading issueHi guys I have refreshed a ZX spectrum 48k with a new keyboard layer and front case. The machine will power up and seems to work good. Unfortunate…
... you can see on the picture it should be one eligible ... when pressing a key so no loading+no audio coming out as ... this is due to the composite mod (it is rather simple to ... -
What mods do you recommend for a +2aHello all, I have recently got a +2a, that is running nicely. I'm thinking of modding it. I have read that the +3e rom is a good option. what else…
... back is the same as composite or no? My TV is obviously ... pretty new has HDMI, composite inputs so ... will have to do a composite mod on the TV out of ... a rgb scart cable. The picture is great. I'm now ... -
New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…
... troubles with this S-video mod unfortunately. I decided to connect ... but if I mod the speccy back to the composite mod then all ... should at least have a picture on screen. I decided to ... new one but just no luck and no signal at all. I ... -
Replacing voltage regulators - need to sanity check a few things pleaseHi Everyone I'm in the process (with a lot of help from some friends at Greenford Computer Club), of giving my three Speccys some much needed prev…
... perfect" picture quality. My 48k has a simple wire composite mod without ... any caps or transistors or anything - the picture ... definitely needs the mod as I have no intention of ... />
Hope the composite mod goes well, do please keep ... -
No picture from my Spectrum +2I just got my hands on a ZX Spectrum +2 but I'm having problems getting a picture through the RF port. I get a really faint signal (like watching TV…
... 'm having problems getting a picture through the RF port.
picture from them.
Or ... -
No pictureIve just found my mum's old 48K spectrum in my loft. I plugged it into a tv using coaxial and swiched it on but there was no image on the screen; do …
Ive just found my mum's old 48K spectrum in my loft. I plugged it into a tv using coaxial and swiched it on but there was no image on the screen; do I need to wait and what channel should i switch it to? Also, it doesn't make a noise. Is it supposed to? -
Composite output issuesHi, My speccy was bought with a composite mod but it's typically not stable. On an old TV it works fine but not on my Asus PW-201 monitor which has…
... speccy was bought with a composite mod but it's typically not ... PW-201 monitor which has composite and RGB inputs. The monitor ... -
Black screen of deathI recently aquired a zx spectrum (revision 3b) of the rubber key variety. it was all running smoothly(for about an hour after pluggin in), i left the…
... .
ive done the composite mod and still no joy, still the same ... be there with the comp mod).
now this is ... users with this problem yet no solution ever found. Im not ... -
Composite video and reset buttonOK, I've got some Kempston clone interface here, and I've added a phono socket and a small momentary switch to it (ages ago but forgot about it) . :)…
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Wire phono socket to composite signal on edge connector
composite mod internally instead now, although I ... -
RGB output differences on +2 and +2a/b +3I've got a 37" LG 1080p lcd tv (37LH7000) I'd hooked up my +3 to it and it displays a clear picture (colourwise) however each column looks like it's …
... and it displays a clear picture (colourwise) however each column looks ... /> Anyway I was doing a composite mod on a speccy last night ... my +3) will pass the picture through from my toastracks and ... hey presto a perfectly clear picture, well as best as can ... -
Spectrum On LCDHi everyone, I cant do the composite mod on the 16 K speccy, tried it and the video is messed up. i have an LCD with analoge input so i can connect …
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I cant do the composite mod on the 16 K speccy ... , moves around like jults and no colour. What is the VERY ... -
2 blown PSUs in one dayI got a SAM Coupe today, and the PSU started to smoke as soon as I turned it on. Since the Spectrum +3 PSU looked up to powering the SAM, I wired to…
... the composite video on the power connector. Again no picture. There ... 's 3V between the composite video and ... - my hastily constructed connector no doubt. Connecting the +3, ... the drive spins continuously but no LED. I had a ... -
Issue 3B only sees 16k (and RAMTOP NO GOOD on loading)A ZX+ with issue 3B board that i got recently, does not see anything more than 32768 (sometimes 37267..) on "PRINT PEEK 23732 + PEEK 23733 * 256 (Ent…
... /> Side note, i did the composite mod on this spectrum, and the ... -
Scratchy video after composite modIve re done the mod several times on this Issue 4B with the exact same results, anyone know whats up? Caps maybe? [youtube]fa1wk_epgjE[/youtube]
Ive re done the mod several times on this Issue 4B with the exact same results, anyone know whats up? Caps maybe?
[youtube]fa1wk_epgjE[/youtube] -
Ferguson MA20 via SCART to modern TVHello, I am a newbie here but I visit this forum on regular basis to find interesting informations about computers of my life - Speccies. I have a s…
... use RCA (cinch) composite video to SCART and picture quality is acceptable ... better) I suppose there is no RGB out signal at edge ... />
48K and Spectrum+ - composite video modded - picture quality is awful !
Issue 4S Schematics and DC-DC circuitA while ago I bought a Spectrum 4S that had problems tuning. I removed the RF tuner as I was not going to use it and did the composite mod. It worked…
... use it and did the composite mod. It worked, but the paper ... ?
I currently have no +12V or -5V from the ...ZX81 back porch fix using LM1881Hello! Has anyone here did the back porch fix for ZX81 using LM1881? I did it this weekend and instead of clear black on white i got black on dark g…
... rwapservices.co.uk/ZX80_ZX81/forums/composite-mod-voltages-t622s20.html-sid= ... main problem is that the picture is still barely visible. ... dark grey. Also, the picture has a lot vertical aftifacts ... RF modular) or directly to composite input?
One ...Issue 2 video problemHello all, Need some help with an issue 2 board that I 'm trying to restore. I've replaced all the electrolytic capacitors, changed the voltage regu…
... it. I also did the composite mod. Now the problem is that ... not my monitor I have no problems with another issue 3 ... in electronics is basic so no oscilloscope, but I can measure ... replaced one of them but no joy. I've also tryied ...Keys in the middle of the keyboard not working.Have just (mostly) successfully carried out the composite mod, but as the title says the middle two columns of keys of my rubber keyed issue 3 48K sp…
... (mostly) successfully carried out the composite mod, but as the title says ... removing and reseating the connectors - no difference.
To be ...Easy No-Solder ZX Spectrum Composite Mod TutorialJust thought this would make life easy for people who don have a soldering iron [url]http://www.youtube.com/watch?v=0dbNowKZ00g[/url]
Just thought this would make life easy for people who don have a soldering iron
[url]http://www.youtube.com/watch?v=0dbNowKZ00g[/url]A quick ZX Spectrum + restorationI bought a ZX Spectrum + the other day it was untested and in a state didnt cost me much and i had it today only to find the real state. Key 3 was al…
... turned it on and the picture was naff
[img ... />
Did the composite mod on it and the picture was great
composite modJust wanted to know would this mod work on a +2a ?
Just wanted to know would this mod work on a +2a ?
