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composite woessince I'm replacing a load of membranes , I decided to composite mod the machines also at the same time.. but am not having much joy with rubber key …
... some machines they only have 2 dots where they are solded ... .uk/2008/11/zx-spectrum-composite-video-mod.html[/url]
thing is 2 of the 4-6 machines ... .. , that takes 2 phonos + the rca for the yellow composite.. BUT I ... -
Almost no picture on a toastrack Issue 6UI?d need some help with a toastrack, that hardly shows any picture on both the RF and RGB. It?s totally distorted. I had this before and I remembered…
... 't see how this mod would affect the composite or UHF picture ... :cry:
Does the composite video output on pin 1 ... (and ground, pin 2) on the RGB/Video DIN ... -
TEA2000 mod for better CVBS quality?Has anyone tried this before? :confused: [URL=http://s1063.photobucket.com/user/JRT480/media/Evenmoreperfect_zpse2505ab9.jpg.html][IMG]http://i1063…
The aim of that mod would be to band-limit ... can separate chrominance from the composite signal in this range but ... done an s-video mod on a grey +2 and this avoids ... -
TEA2000 mod for better CVBS quality?Has anyone tried this before? :confused: [URL=http://s1063.photobucket.com/user/JRT480/media/Evenmoreperfect_zpse2505ab9.jpg.html][IMG]http://i1063…
... suppose we can expect this mod to work the same way ... +2A/+3, provided that the composite video out circuit is completed ... and similar to +2!
Sintech sells a ... -
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…
... The voltages between PIN 2-3 and 2-4 of the LM1889 ... 3mV -> +0mV
PIN 2-4: +28mV -warmup-> + ... increased, while the PIN 2-4 voltage decreased.
... there was no picture (AV mod) in cold state, but ... and use the RGB or composite output of that, which ... -
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 ... - really top level stuff! :)
2. I have to learn how ... : I get no picture from composite, which I guess is the ... not having done the R48 mod? -
Sinclair 128k available?Hello there, Spectrum fans! Let me introduce myself. I am from Russia, my name is Dimitri. In the 90-s I was working for a firm producing ZX Spectru…
... own, the grey +2's are probably the ... heard of a grey +2 keyboard membrane needing replacement ... /> Only issue with the +2's is the incorrect orientation ... audio signal affecting the composite output. Both are easily ... s also easy to mod for external cassette input ... -
Sinclair 128k available?Hello there, Spectrum fans! Let me introduce myself. I am from Russia, my name is Dimitri. In the 90-s I was working for a firm producing ZX Spectru…
... not heard of a grey +2 keyboard membrane needing replacement for ... />
Only issue with the +2's is the incorrect orientation ... the audio signal affecting the composite output. Both are easily fixed ... it's also easy to mod for external cassette input.[/QUOTE ... -
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…
... producing that hacky s-video mod.
[QUOTE=Renegade;778280 ... making this modificaction on the +2/+2A?[/QUOTE]
The ULA ... one go straight to a composite video output by the TEA2000 ... that the signal on the composite out pin is chrominance only ... -
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…
... the mod I did.
So far I've done composite ... , and S-video on one +2. No fried TEA2000s so far ... ! The S-video mod is a pretty clean mod, the signals can ... -
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…
... want to do the composite video mod to a 48K. And ... a 48K with the CVBS mod?
But ... quality picture on CVBS mod could be performed before ... the CVBS mod (or without that mod ever being done ... />
What do those 2 capacitors on top of LM1889N ... -
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…
... performing the s-video mod (or composite video mod)?
I noticed that ... the s-video mod I have only found 2 cables an they ... -
Issue 1 oddityHello to everybody, I have a very first under my hands - a broken Issue 1. Apart from the classic "broken lower RAM" syndrome which will be easily t…
... , also did another mod for composite with a double buffering 2 x bc547 ... -
RGB video issue on +2 and +3. Signal high?I have a couple of +3's and a new +2a that arrived today. When I plugged in the +2a using my RGB lead from Retro Computer Shack I was reminded of a n…
... once you mod the machine to output composite video on ... pin 1, like the grey +2' ... s do.
Composite on the + ... 2A/+3 is quite a simple mod and ... all to my TV via composite.
Picture ... -
3.4 Inch TFT with 48k Spectrum....hmmm?Hey guys, So I have been playing around with the idea of using a small LCD with composite input for a 48k Speccy. I got hold of one of these relat…
The capacitor mod makes the composite output non-standard, composite video isn't AC ... it sits in the 0.2-1v range?).
Some ... . Personally I have at least 2 devices which won't accept ... its best to make a mod that outputs a standard signal ... -
Newbie Hardware QuestionsI just recently aquired my first Spectrum, a +2, and I'm in the process of getting acquainted with it. Being a newbie I had some questions, which …
... 128 in the Amstrad grey +2... [/quote]Great, I'd hopped ... was possible. I have a +2, which I'd initially though ... having to mod it straight away to get a composite signal, and ... second. [/quote]Fortunately, between the +2 and the DivMMC I have ... -
Composite mod vs interfaceHey all, I was looking at the pinout for the edge connector of the zx and noticed that there are composite and component video signals available thro…
Some boards (issue 1 and 2 I think) have a soldered ... link is not fitted, the composite video signal is not available ... present, you can use the composite video signal at the edge ... advantage of doing the composite video signal mod. Is that users can ... -
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…
... 's almost on par with +2 CVBS output! =D>
composite video mod will surely suffer from dot ... -
Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... that describes the 4 floppy mod and 4K upgrade to these ... 25way d connector above the composite out and I am unsure ... and construct something rather than mod the original one just in ... used with the 128 and +2 better without the problems we ... -
Correction of +2 hardware errorsThis is a collection of various pieces of information picked up from various places, including a lot from this forum. I have edited it and reworded i…
... to unwind), unsoldered, the +2 taken apart, then the 10k ...
Fixing the AY on composite via the sound jack on ... from R37 and inserted a 2.2k (red red red ... as above and the 2.2k resistor was from ... filter to complete the composit mod.
Yeah, I ... -
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…
... guys. I just did this mod and the quality is awesome ... the "cut track" solution, cutting 2 of them to separate the ... , with this mod, without any other modifications, I lose the composite output ... -
bizarre error on a grey ZX Spectrum+2 - the long search for a small problemHi, I got a ZX Spectrum+2 that worked a bit but crashed while loading or running 128k games. I installed a 128k-test-ROM that told me about RAM fa…
... the download) on my grey +2, issue 3 Z70500 - date 8639 ... done the C31 mod to split the RF/composite sound, turned TR4 ... .
Not the TEA2000 capacitor mod - lack of bits!
ZX-Uno moddingStarting with ZX-Uno case modding I have not yet received my ZX-Uno yet (it is in the post) but I know that I will have to do at least one mod …
... in cotton wool" in a 2 case solution . So for me ... could have been better but composite worked well .So this project ... call "White Wonder"
2) I think "White Wonder" is ... a quick "rough and ready" mod effort .In my opinion the ...ZX Spectrum 48k issuesHi all! A couple of days ago I bought my first 48k Speccy off ebay (I already own a beautiful QL expanded with QubIDE interface and 640k ram). It was…
... only a fast recap) and +2 (some more modifications here, a ... wrongly mounted and a mod to use on composite video capable monitors ...Spectrum +2 grey RF removalHi everyone. If I were to remove RF output from a +2, just intending to keep Composite video out from TEA2000, then all the components that make t…
... , I understand, the s-video mod needs a bit of room ... how I placed a composite socket mod on my +2 grey. I kept ...ZX Spectrum Test PCB I recently read about one of these (I think it may have been the Retroleum site but I am not sure) and I thought "What a great idea" . As pictured …
... it possible to do a composite video mod without a modulator already ... top of the CPU (spider mod).
Be also aware ... Z80 as it is rated 2.5MHz only.ZX Spectrum Test PCB I recently read about one of these (I think it may have been the Retroleum site but I am not sure) and I thought "What a great idea" . As pictured …
... it possible to do a composite video mod without a modulator already ... linked to of your issue 2 board show that the sockets ...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…
... and install CVBS (composite) output instead
2. Disconnect the audio ... and not least, a small mod to the existing MIC socket ...Nasty vertical pattern on a 128K Toast Rack via RGBI managed to fix the busted membrane on my [url="https://www.worldofspectrum.org/forums/discussion/55755/got-myself-a-128k-toast-rack-plus-a-simple-a…
... are also applicable to grey +2?[/quote]
I’m almost ... experimenting, though.
My mod didn’t get rid of ... not planning to use the composite output.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 irreversible "fuse like" hardware mod necessary on the Pi 3 ... , short standoff (*4) , screws (*2) ,Enclosure , Button cell CR2032
2 or 3 , Pre-programmed ... I have relied on a composite monitor for other Pi ...
