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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 ... - composite is composite. The S-video version looks a lot better ... machine I modified for S-video originally had a wire ... I could reuse it for S-video (which requires two sockets) ... -
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…
S-video eliminates dot crawl. Dot crawl ... the compromises inherent in composite video - the combining of black ... one extent or another. It's impossible to perfectly separate the ... composite mod simply provides standard 48K composite video at the correct brightness ... -
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…
... the compromises inherent in composite video - the combining of ... extent or another. It's impossible to perfectly separate the ... particularly bad on the 48K Spectrum because there are ... mod simply provides standard 48K composite video at the correct brightness ... -
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…
... would fit on a 48k but I wonder if ... my plan for +3 s-video boards. I even built ... off ever producing that hacky s-video mod.
[ ... @rga24: Did you do a video about making this modificaction on ... straight to a composite video output by the TEA2000 ... -
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…
... followed the schematics on your video. I have a very basic ... close the Spectrum. Obviously the 48k+ has more room, that is ... do something similar on the 48k.
@Reinier ... take a look at Richard's video you will understand that it ... -
Burned finger temp on rubber 48k heatsink normal?Ok so i opened it up because a few keys started to act up and i noticed that after burning my hand the heatsink was that hot i could actually smell t…
... have 2 PSU for the 48k Spectrum: one is a Euro ... diode in according to Zorn's video. In spite of leaving a ... keep this PSU for a 48k with some add-ons connected ... -
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…
... mods, on the 48K it's a little harder because ... colour in the decoded composite video display - i.e. ... edges.
The 48K video circuit is much more simple ... - there's an inverting voltage amplifier made ... perform as well as S-video. -
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…
... have to do the s-video mod to my 48k but it seems ... -
Next step for fixing my speccy?Hi guys, I've picked up my faulty Spectrum aiming to fix it. So I followed the excellent JouledperCoulomb videos on Youtube for the basics and I am …
... start and have watched Zorn's video's and have some idea of ... say, .1 (NOTE, that's POINT ONE - not one) of ... that ROM IC, there's more than one type and ... changed.
Here's a link to what I ... when it comes to fixing 48K machines..... [url]http://www. ... -
Next step for fixing my speccy?Hi guys, I've picked up my faulty Spectrum aiming to fix it. So I followed the excellent JouledperCoulomb videos on Youtube for the basics and I am …
... start and have watched Zorn's video's and have some idea of ... say, .1 (NOTE, that's POINT ONE - not one) of ... that ROM IC, there's more than one type and ... changed.
Here's a link to what I ... when it comes to fixing 48K machines..... [url]http://www. ... -
Issue 4S differencesI decided to buy an Issue 4S PCB after reading much about them on here. It was originally in a plus case which didn't come in the sale. I've been run…
... all that bad for a 48K. If those 2SC945 transistors ... composite mod, that's because the Spectrum video circuit already operates ... With a single transistor composite video mod, no further changes are ... also mean that performing the s-video mod according to your ... -
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…
... , if the ZX Spectrum 16/48k machines had an RGB output ... />
The next best is s-video. Again, the better cables use ... coax).
For composite video, a single coax cable is ... difference between a cheap composite video cable and a high quality ... -
Cooking toastrack... the dreaded smellI powered up my Spectrum 128 (heatsink model) yesterday only to see what looked like an out-of-tune picture on the television. I'm using a scart adap…
... should still work (as that's generated by the ULA and ... signal (which is actually composite video on most RGB cables) come ... TV thinking the signal is S-Video. :)
The transistors (which ... the same way as the 48K Spectrum's transistors do. The only ... -
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 …
... seeing here is standard 48k 'dot crawl'. It's caused by the ... serious drawback of the Spectrum 48K electronic system.
[ ... in more detail:
[I]?S-video eliminates dot crawl. Dot crawl ... is particularly bad on the 48K Spectrum because there are two ... -
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 …
... check the quality of the video signal from the YUV-RGB ... is the result (better than S-Video):
[URL=http://www ... following elements of ZX Spectrum 48K: C68, C69, C70, C71, R48 ... on the quality of the video, as well as on the ... -
Screen artifacts/shimmer after composite modHi folks,<br><br>I've done a little work to what I hope is going to be my work-horse rubber key speccy - It's a Samsung made issue 3b.<br><br>I notic…
... BC549C with the base to video in, collector to +5v and ... stick one on all my 48K's :)
B -
bmp2scrhttps://www.youtube.com/watch?v=zsjTpFR0oYQ converted for the sam coupe by using bmp2scr can anyone help Leszek Daniel Chmielewski ideally it onl…
Roger, for your information, the video output of the SAM, the ... treats it as though it’s interlaced no matter what, then ... how non-compliant the SAM’s video signal is with PAL-I ... in one aspect than the 48K: the 48K outputs 312 scanlines per ... -
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…
... understand that the 'standard' (not S-video) mod improves the display somewhat ... not completely eliminate dot crawl. S-video can, I understand. But im ... not so much with my 48k) and, if I found the ... 48k Spectrum display to be problematic ... -
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…
... ;844126"]I noticed that my 48K has a clearer background (less ... ;844126"]I realised that my 48K+ has a mettalic plate holding ... any difference to the Spectrum's video output. It may help reduce ... that causes interference on the video picture, is the logic, memory ... -
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…
... ;844126"]I realised that my 48K+ has a mettalic plate holding ... any difference to the Spectrum's video output. It may help reduce ... have some influence because the 48K is plastic all round the ... -
How to connect a ZX Spectrum to a QL (RGB) monitorI recently acquired a pretty nice (old) original QL Vision color monitor. It works GREAT with the QL and the ZX 128K. The normal ZX Spectrum however,…
The 48K's dont output YUV at all. They output YC, which is effectively S-Video. -
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…
... s-video modification on an Issue two 48K Spectrum so I made a video ... technical details are in the video; if you have any questions ... are not covered in the video please ask.
[url ... -
I'm totally confused now, RGB, composite, SCART what?Hello everyone. I have a +2A coming from the UK and I am wondering how I'm going to connect it to a modern TV. The TV has inputs on the back that ar…
... occasionally having the slightly better S-Video (one channel {conductor} ... for the luma video and a second channel for ... with very good quality S-video displays that are not ... /> For example, a s-video modded 48k spectrum benefits from eliminating dot ... -
Most accurate display on emulatorWhich Windows emulator has the most accurate display. I am making a game and one of the tiles is not showing correctly on an real spectrum +2 machin…
... Spectrum.
The 16k/48k ZX Spectrum was designed only ... used in the earlier 16k/48k machines), and so a different ... , and much better than composite video, is S-video. Not that I have ... modified so that it outputs s-video signals, there is a marked ... -
48k packed up after cap changeHi all, I'm relatively new to the Sinclair world, my 8-bit repairs in past was lurking in the dark sides of Acorn, Amstrad and Commodore! I've got…
... screen RAM and creates the video signal). The Z80 CPU is ... /> Watching a zx.zigg.net video he noted that a failing ... /> [b][i][u]The failed 48k+'s[/u][/i][/b]
"Assuming ... PCB holes (as it's easy to put a lead ... my parents (courtesy of dad's BT van!). I am ... -
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…
... and listen carefully to rga's video on this matter and write ... performed the s-video mod on both a 48K+ plus and 48K.
On ... parts.
On the rubber 48k there is no such space ... -
TV for ZX SpectrumPlease select your TV type
... old CRT monitor.
48K machines I have them linked ... monitor or CRT TV via s-video because I can't stand ... -
Clamping Speccy InterfacesThere are a huge number of broken Speccy interfaces available . I came across one on Ebay recently said to be "partly working" or similar .Why are th…
... 3 bits are a ZX 48k Spectrum , Div MMC Enjoy ... Mark Fixes stuff You Tube video was that the Div ... worth looking at Mark's You Tube Video for details of ... is the link to Mark's video:-
[url="https ... -combo-on-the-speccy-s-back-edge-connector#latest"] ... -
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…
... some extra space on the 48K +. Last question, I have a ... ]
PS : for the S-video connector I was more thinking ... -
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…
... ) 48k with a composite mod, but I'd like to have s-video ... easiest way to accomplish s-video for a 48k? The green markings mean ...
