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Best composite mod informationJust got my 16K (Issue 3) working. I'm in NTSC land so I need to run a composite signal through my PAL<->NTSC converter. I know there are a ton o…
... that the 'standard' (not S-video) mod improves the display somewhat ... completely eliminate dot crawl. S-video can, I understand. But im ... not interested in an S-video mod right now. I'm ... hope to effect a significant improvement in display? Both my TVs ... -
Faulty 48+ Help NeededHi, This is what I get when I plug in the spectrum, this is tuned in. Vid shows a reset. Any ideas, or pointers on the first thing to check. Keyboa…
... [/IMG]
From the video and the pics, what do ... the work on the ram replacement, but we can't rule ... -
Switched voltage regulatorIn the past a replacement voor the (hot!) 7805 has popped up a couple of times in various threads. As far as I know, Recom Power Inc. was always ment…
... ? Did you notice any improvement in video or audio quality coming from ... -
Switched voltage regulatorIn the past a replacement voor the (hot!) 7805 has popped up a couple of times in various threads. As far as I know, Recom Power Inc. was always ment…
... ? Did you notice any improvement in video or audio quality coming from ... hard to say if the video or audio improved, as this ... unmodified ZX Spectrum, so the video was via the TV UHF ... -
I am currently playing......Don't know if there's been a thread like this, but I can't find one.... Having seen all the different threads asking people if they've played such a…
... think it's a massive improvement on the last one! It ... take screen shots and record video when you want (like the ... -
velleman k8036 - Video signal cleaning?http://www.velleman.eu/products/view/?country=es&lang=en&id=348080 Although velleman reports having discontinued this kit and its primary use was …
... will normally be no special improvement to the signal of a ... circuitry to improve the Spectrums video signal.
Ingo. -
ZX Spectrum+ video ? red on green problemThis is my first post on the forum, so let me introduce myself. I am retired for several years. For 30 years I have been a fan of the ZX Spectrum. I …
... ="Boleslaw Jamroz;815917"]Modification “S-Video" removed the phenomenon of "dot ... of roller near the S-Video socket on the picture number ... the choice of a 1uF capacitor on the path of chrominance ... -
Modern PSU: picture improvement?I've recently seen advertised some 'replacement power supplies' for Spectrums for which the claim is made that they may make an improvement in pictur…
... somehow on its way to video components. Not likely to be ... +5V regulator with a switching replacement (see Recom, Tracopower, ....). This allows ... -
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…
... that voltage levels in composite video signal drop (=darker), not a ... regulators (or -converters) and in video encoder / ULA supply lines. A ... small value of series capacitor in composite video output. 47uF may work ... -
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…
... small value of series capacitor in composite video output. 47uF may work ... this also apply to s-video output?
If not, what ... reduce horizontal banding in s-video? -
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…
... small value of series capacitor in composite video output. 47uF may work ... this also apply to s-video output?
If not, ... reduce horizontal banding in s-video?[/quote]
Yes, the ... done by fitting a 100uF capacitor here.
[b][i ... -
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…
... small value of series capacitor in composite video output. 47uF may work ... reduce horizontal banding in s-video?[/quote]
Yes, the ... done by fitting a 100uF capacitor here.
[b ... I tried fitting a 220uF capacitor on the luminace output and ... -
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 …
... is a "Mark Fixes Stuff" video that explains about the differences ... repetitive bending back (after membrane replacement) will eventually break the brass ... -
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 goes from the big capacitor to the 9 v contact ... and I think as a replacement for this original supply . This ... -
Grey +2 tape motorAnyone know where to get a tape motor for a grey +2? Mine is on its last legs. When I got this +2 I serviced the deck and put new belts in but the…
Youtuber GadgetUK164 has done a video replacing a motor on his +2. Looks like you have to get replacement from China though.(Aliexpress)
[code]https://www.youtube.com/watch?v=CrsiKstFwB8[/code] -
Harlequin Rev. G - Composite video problem.What I'm about to describe I'm not experiencing it by myself, so the probable answer to any "have you tested this or that" question is no, I don't, b…
One of the user affected with this problem has succesfully swapped c25 with a 27pF capacitor and the composite video has color at last. I'll report back when more of the affected users perform this fix to be sure this value works for all of them. -
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's why the nearby capacitor is rated at 400V.
replacement will fit on the PCB ... -
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…
... this signal via a new capacitor between IC11, pin 4 and ... pointlessly present on the composite video output. Monitor should now produce ... done? I've watched the video but the end result picture ... -
So for my first trick...I'm sure people have already used the AD724 or AD725 on other 8 bit machines, and i know the Harlequin uses the 724, but not seen anyone trying to us…
... 4.43MHz, and a remarkable improvement on screen. 120pF gave -33dB ... , switchmode regulators, the AD725 for video output, and so on. -
The best emulator for the ZX81?Hi everyone, could you please recommend me an emulator for the ZX81 which is good and easy? Thanks!
... the ZX81 generates it's video display. Unlike the ZX Spectrum ... serial and fed to the video circuit.
As A15 ... be hi-res compatable, or replacement character sets, or UDG characters ... -
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 …
... the yellow jack the composite video on the ZX-Uno to ... the big resistor in the capacitor discharge tool did generate a ... am just puzzled why the capacitor discharge resistor gave me a ... -
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 …
... it is wired for comp video input. I will retrieve the ... they both buzzed on the Capacitor Tool resistor showing continuity .However ... -
A focus on old TVs for 48k spectrums The old 48k Spectrum is becoming harder to use "display wise" in its original state. This thread is about retaining originality and not going down …
As the video signal frequency differs a factor ... a 47uF (or 68uF) electrolytic capacitor between 'VID IN' of the ... where the '-' wire of the capacitor can enter, so the (axial ... ) capacitor itself can stay outside.
... -
A focus on old TVs for 48k spectrums The old 48k Spectrum is becoming harder to use "display wise" in its original state. This thread is about retaining originality and not going down …
... 100uF 16V electrolytic capacitor between this and the composite video connection has ... -
Leading Zeroes on a Score in BASICI'm trying to print the score with leading zeroes such that it's always 6 characters wide, i.e.: 000010, 000150, 006100 etc. I quickly knocked thi…
... PRINT statement makes a slight improvement, but in some cases only ... as being fractionally quicker, each replacement of "AT rr,cc" with ... time & space; often an improvement in one is made at ... -
So were the 80's really that great?I should imagine that most of us on WoS were kids during the 80's. I was 6 at the start of the 80's and obviously 16 at the and. Now that is one he…
First video recorder we had was a ... bid for the service, the replacement "TELETEXT" (I think) was rubbish ... -
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…
... PC, I ca watch the video. I was using a iPad ... may need to use a capacitor and temporary reset switch in ... -
No sound from ToastrackHi everyone, not posted in here in a while! Anyway I have a really nice "toastrack" I am working on at the moment which just needs a new keyboard …
... a previous owner removed the capacitor that mixes the sound into ... and interferes with the composite video signal for no good reason ... -
No sound from ToastrackHi everyone, not posted in here in a while! Anyway I have a really nice "toastrack" I am working on at the moment which just needs a new keyboard …
... a previous owner removed the capacitor that mixes the sound into ... and interferes with the composite video signal for no good reason ... -
ZX Speccy +2A - B&W & snowy RF output + other issuesHi All, I am new to this forum and I am back to the Spectrum world after 25 years. Recently I've bought a second hand +2A (+2B board - Z70833 Issu…
... of the composite colour video signal and the limitations ... Spectrum generates the composite colour video signal. So it's ... generated from the composite colour video signal. Plus the modulator ... Still, it sounds like an improvement compared to what you had ...
