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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…
... all: The temperature of the regulator of the harlequin will not ... input. It is a switching regulator with high efficiency. If you ... -
Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…
... so I connected it's regulator up to the +2a's ... -
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…
... is that the disciple voltage regulator heats like a pentium, and ... -
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…
... tab of the switch mode regulator and the inductor where fiddly ... down cycles), and for the regulator a lot of flux, a ... -
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…
... tab of the switch mode regulator and the inductor where fiddly ... down cycles), and for the regulator a lot of flux, a ... the ground plane of the regulator), liberal application of flux, and ... -
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…
... the ground plane of the regulator), liberal application of flux, and ... the moment I pushed the regulator down the heat vanished and ... -
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…
... a *lot* of searching. Voltage regulator gets hot, but that's ... -
Another ZX Compact.As a follow up to finding and posting this last year , [url]http://www.worldofspectrum.org/forums/showthread.php?t=42473[/url] I took on the challen…
... .5mm sockets and a RECOM regulator to get rid of the ... -
Another ZX Compact.As a follow up to finding and posting this last year , [url]http://www.worldofspectrum.org/forums/showthread.php?t=42473[/url] I took on the challen…
... .5mm sockets and a RECOM regulator to get rid of the ... -
Spectrum +2 (Grey version) RGB SCART QuestionHi Guys, A quick question for you. As the new owner of a 128K Spectrum +2 (grey version), I'm using a cable from Retro Computer Shack which tries to…
... clean 5v available from the regulator? So I tapped off there ... -
+2a no sound from rfHi, finally got my +2 working, the sound was working through the TV, then it started to crackle, which got worse and then the sound went. Sound is w…
... and obligatory exchange of the regulator.
I thought I ... -
48k black paper white borderI recently sold a speccy to a guy, unfortunately the power supply didnt survive the trip, so on replacing for him it seems neither did the speccy! H…
... be any output from the regulator at this voltage, hence the ... -
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…
... /> The Harlequin has a switching regulator able to give up to ... high efficency of the power regulator has also the effect that ... -
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…
... /> The Harlequin has a switching regulator able to give up to ... high efficency of the power regulator has also the effect that ... -
Using VAC PSU in DC deviceHaving fixed the dead Issue 3B, I began to wonder about the PSU that came with it. It was pretty obvious what had killed the poor Spectrum as the PSU…
... hole gets blown in the regulator case then all bets are ... -
Yellow issue 4A keyboard madnessNote sure if this is a similar problem to the one CornishManicMiner has, but one of my yellow issue 4A boards is driving me crazy. I had it in variou…
... (changed those) and the voltage regulator (which I also changed). Could ... -
Yellow issue 4A keyboard madnessNote sure if this is a similar problem to the one CornishManicMiner has, but one of my yellow issue 4A boards is driving me crazy. I had it in variou…
... tab of the 7805 voltage regulator (where the heatsink attaches), use ... -
Yellow issue 4A keyboard madnessNote sure if this is a similar problem to the one CornishManicMiner has, but one of my yellow issue 4A boards is driving me crazy. I had it in variou…
... that still have a 7805 regulator, I find the metal heatsink ... tab of the regulator (which is internally connected inside ... the regulator to the middle leg/pin ... -
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…
... is that the disciple voltage regulator heats like a pentium, and ... realise it was the voltage regulator, though, but I guess it ... ]replacing the Spectrum's voltage regulator[/THREAD] makes quite a lot ... -
eBay 128K Spectrum RGB cables overheat the Spectrum!?Hi everybody, For a long time I've wondered why Spectrum 128K Toastracks were overheating when using my Retro Computer Shack RGB SCART cable. Today …
... 5v feed off the internal regulator then take that through an ... additional regulator - a small one offering ... 3v output from the secondary regulator directly to pin 5. < ... test first, particularly ensuring the regulator isn't getting too hot! -
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…
... that operation.
The regulator is functioning 5Volts OK on ... -
eBay 128K Spectrum RGB cables overheat the Spectrum!?Hi everybody, For a long time I've wondered why Spectrum 128K Toastracks were overheating when using my Retro Computer Shack RGB SCART cable. Today …
... /> I think using a voltage regulator should overcome any issues between ... -
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 :-) …
... Issue One with its toasty regulator and loud buzzing, I was ... -
Harlequin - usefull mods and addsHello, I start here a thread regarding mods and adds for the Harlequin. It was found: * that the Sinclair Interface 1 does not fully work at the Ha…
... the output of the 79L05 regulator as "-12V ==> B23"...:o ... -
Spectrum 128 malfunctioning with DIVMMCI recently got myself a spectrum 128 (toastrack) and a DIVMMC card so I could load games from it. It all works fine until it has warmed up and then t…
... supply, or replacing the voltage regulator (could it be dropping the ... -
Spectrum 128 malfunctioning with DIVMMCI recently got myself a spectrum 128 (toastrack) and a DIVMMC card so I could load games from it. It all works fine until it has warmed up and then t…
... the 5v from the voltage regulator and it doesn't drop ... getting hot are the voltage regulator and the ULA. -
Spectrum 128 malfunctioning with DIVMMCI recently got myself a spectrum 128 (toastrack) and a DIVMMC card so I could load games from it. It all works fine until it has warmed up and then t…
... the 5v from the voltage regulator and it doesn't drop ... getting hot are the voltage regulator and the ULA.[/QUOTE]
Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
4.3v is very low for the +5v rail. What voltage are you seeing at the regulator input and output (pin 1 input, 2 GND, 3 output)?
BFixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
... are you seeing at the regulator input and output (pin 1 ...Spectrum 128 malfunctioning with DIVMMCI recently got myself a spectrum 128 (toastrack) and a DIVMMC card so I could load games from it. It all works fine until it has warmed up and then t…
... sources are the 7805 voltage regulator followed by the ULA. Other ... better PSU or a pre-regulator circuit. Or a simpler circuit ... heatsink from the 7805 voltage regulator. Clean off any old heatsink ...
