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ZX Spectrum + 2 128K - Video Issue?Hi All, I have just picked up a secondhand +2 and am having a problem with it. :( When I power the unit on and hook it up to my TV with the RF cable…
... grey case and the DC power jack is a 2.1mm ... /5.5mm low voltage power connector like on the 48k ... DIN socket for it's power socket. The PSU is marked ... as a +2A, but the circuit board inside is smaller. It ... -
zx spectrum 128+2a/b questionsIv just purchased a 128+2 and have only one game for it lol (Super stunt man). A few question if anyone can help.. 1)I'd like to run games through …
... either the +3 or +2A circuit. There are two versions (both ... modifications around the FM modulator circuit that generates the sound for ... the modifications from the +2B circuit are numbered starting at 300 ... the board that holds the power LED uses r327 for the ... -
Is this Spectrum dead?Hello. First post and all that... I have an old Spectrum +3 which has sat on a shelf for many years. Yesterday, when I plugged it in for the first…
... is a diagram of the power supply circuit:
[url]http://hardware ... -
HxC Floppy Drive Emulator - help neededHi! I?m really having difficulties with my new HxC SD card floppy emulator on a Spectrum +3. It?s REV C cased light gray, with no labels on it, so I…
... you how to provide a mod to sort out the "Ready ... PCB, but using the same circuit) in a case...
Is the 128K heatsink's TV out modulator kit repairable?I have a 128K+ Spectrum that is working absolutely fine and is giving out the perfect picture from its RGB out socket (with the right cable ofcourse)…
... , a slight change in the circuit can have a big effect ... on the operation of the circuit (loss of oscillation, or operating ... /> So in theory, the modulator circuit will need setting up and ... will try the S-Video mod.
[I][B]Mark ...The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…
... /> [QUOTE=velesoft]
- as reset circuit use TL7705 or similar chip ... down and delete them after power up.
[QUOTE=velesoft ...48K problemI have the following problem with my 48K: When I turn it on with nothing plugged into the Interface port everything is ok. When something is plugged …
... does not sound like a power supply problem.
It ... /> However, checking / testing the external power supply is the first stage ... is simple to check the power supply unit (PSU). With ... not to cause a short circuit between adjacent terminals / tracks (as ...Another cause for DivIDE problems on 48K'sThe last months some topics were opened to discuss problems with 48K ZX Spectrums and DivIDE. Sofar we found: - Bad Z80's because of poor fanout (si…
... /> [url=https://www.circuitlab.com/circuit/c27qgp/romcs-handler-comparison/][img ... ]https://www.circuitlab.com/circuit/c27qgp/screenshot/540x405/[/img][/url ... can be a problem with power, but that's more obvious ...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…
... issue 2 standard quality. The power to modulator was cut when ... I did the composite mod so I can't figure ...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…
... issue 2 standard quality. The power to modulator was cut when ... I did the composite mod so I can't figure ... ]
May be the power or signal was shorted when ...+2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…
... just did the S-Video mod on my +2. I measured ... luma on the 128K video circuit manifests as a 25Hz flicker ...Altera CPLD vs Xylinx FPGAI will dig into the world of FPGA's, mainly to find something that can replace one or more GALs for my current and new projects. And it's never bad t…
... you can just draw the circuit you want, and the synthesis ... they can be programmed in circuit with a cheap JTAG cable ... to be programmed on every power-up by the flash chip ... stop other parts of your circuit from starting up before the ...Altera CPLD vs Xylinx FPGAI will dig into the world of FPGA's, mainly to find something that can replace one or more GALs for my current and new projects. And it's never bad t…
... -Cable-USB-FPGA-CPLD-in-circuit-Debugger-Programmer-/261139207674?pt=LH_DefaultDomain_0 ... -Cable-USB-FPGA-CPLD-in-circuit-Debugger-Programmer-/00/s/NTYzWDc1MA ... to load a "core" every power cycle, but that does help ...Adding IDE to your Spectrum +2 A/B (or +3)Hello my fellow [B]WoS'ers[/B] [B]This is a shared thread with [url]www.amibay.com[/url] which you can [URL="http://www.amibay.com/showthread.php?t=…
... 8bit IDE Adapter
1x Power molex
1x Set of ... also has a NMI debouncing circuit and header so this (in ...Using ZX Spectrums in America.Ok so the prospect of Working and Living in America, is constantly becoming an option for me and one of these days I may bite the bullet and go. Tha…
... the shelf 2A power supply
Composite mod speccy and modern ... TVs will work with composite mod and adjust to pal.
Which first (if either)?As can be seen by my recent posts, I'm kind of enthusiastic about my new +3 :) I'll set up a sig in due course, but at present here's what I've got …
... running a wire to supply power on the +5V to the ... ? I was researching the video mod, and read that one of ... socket?) involved in the video mod outputs the wrong voltage and ... I'm not going to mod anything, right?Adding IDE to your Spectrum +2 A/B (or +3)Hello my fellow [B]WoS'ers[/B] [B]This is a shared thread with [url]www.amibay.com[/url] which you can [URL="http://www.amibay.com/showthread.php?t=…
... have a jumper to connect power to pin 20 if a ... ]
thats the same mod for the divide, not tried ...Which type of Z80 cpu to use with ZX 48?Which type of Z80 cpu can I use with ZX 48? Only the 4 MHz cpu's or some with more MHz? Did not know if a 6 MHz cpu runs in a ZX 48 with 4 MHz. Mic…
... good thing. Especially on large circuit boards. So for clock doubling ... really matter, and ZX81 / Spectrum circuit boards aren't that big ... CMOS version is much better power-wise (~ 5 mA/MHz vs ...CF card to IDE adaptor - modificationI bought a few bits and pieces recently to get my +3 reading from a CF card, but the cheapest CF card I bought (Sandisk 4GB) needs power that current…
... I bought (Sandisk 4GB) needs power that currently isn't supplied ... />
The idea of this mod is most CF adapter can ... pin). Some people make this mod in divide pcb but it ...CF card to IDE adaptor - modificationI bought a few bits and pieces recently to get my +3 reading from a CF card, but the cheapest CF card I bought (Sandisk 4GB) needs power that current…
... only reason not to provide power on pin 20 of an ... some point I can always mod the adapter (or even make ...CF card to IDE adaptor - modificationI bought a few bits and pieces recently to get my +3 reading from a CF card, but the cheapest CF card I bought (Sandisk 4GB) needs power that current…
... only reason not to provide power on pin 20 of an ... that I should avoid getting power from pin 20?
mod than changing the CF adaptor ...CF card to IDE adaptor - modificationI bought a few bits and pieces recently to get my +3 reading from a CF card, but the cheapest CF card I bought (Sandisk 4GB) needs power that current…
... I should avoid getting power from pin 20?[/QUOTE]< ... you can use it to power the CF card. Nothing ... and soldering on a floppy power cable.
[QUOTE ... simpler (and perhaps safer) mod than changing the CF adaptor ... or not you can power the CF card through ...Faulty French +2 grayA friend of mine has a faulty french +2 grey model. The picture its giving out is this... [URL=http://imageshack.us/photo/my-images/19/post2036357600…
... the components of voltage regulation circuit have blown.
pending ... . Once you have fully working power, you will most likely have ...i am currently listening to........as i couldnt seem to find the old one, i didnt look that hard :P ive started a new one right after somebody asked me for some slayer ive rediscovere…
... Thames
Having played in mod punks The Chords (1979-'81 ... touring ? is another slice of mod rock heaven.
5 ... a weird and wonderful psychedelic power-pop tune that proves why ...Video output questions...Two questions... [QUOTE]1. The yellow and blue colours seem out of phase on the display. Is this normal for an RF connection to the TV/monitor?[/QUO…
... by doing a composite mod, basically the circuit is flawed because it ...DivIDE 57cI've come to the conclusion that my DivIDE57c hates me and my specys. It will not work on either my 48k rubberkey, Toastrack or +2A. I've tried and…
I would go with voltage... i.e not enough to power the CF card as thats what used to happen on my divide and CF setup without the ide voltage mod - I cant remeber the exact detail but I am pretty sure Zetr0 knows his stuff and can fill you in.DivIDE 57cI've come to the conclusion that my DivIDE57c hates me and my specys. It will not work on either my 48k rubberkey, Toastrack or +2A. I've tried and…
no fault with either... some CF cards are more voltage hungry than others, if you look at the cf adapter you will see it has an external power conecter for such situations... all the divide mod does is route +5v from the ide conector to the CF card.The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... 5v power supply filtering network, only C4, on the clock signal circuit ...PlusD Mini: implementing the CPLDI am doing my first attempts on creating a CPLD to use as replacement for the PlusD's GAL (and other logic lateron). I use the Xilinx XC9500XL series…
... I did check one logic circuit, that of the CSDS signal ... /> 2. if the 3.3V power levels should work and are ...Spectrum 128K +2 problemhello, i am try to repair my spectrum 128k +2 grey, i remove all ram chips and i have some new ones spares, now i have remove all ram chips, i want …
... to white almost immediately after power up/reset, before accessing any ... problem (break in the circuit, or a short circuit) will prevent the ... that some versions of the circuit schematic have errors - use the ... ][/U] from the [U][B]power supply[/B][/U] [I]and ...
