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48K's and bad DivIDE compatibilityI have had some 48K boards and complete machines in the past which didn't work fully with a DivIDE interface. The reason for that always was a Z80 pr…
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I replaced the 1uF capacitor for the reset.
I ... -
48k Speccy chucks a wobblerI've got a problem with my rubber keyed 48k speccy. When it is first switched on everything is fine but after a couple of minutes the picture on scr…
... a 25+ year old electrolytic capacitor might be considered broken even ... -
TR4 is goneMy TR4 transistor is burned. Can I replace this transistor with a TIP31B or C ? My 4116 RAM ic?s are showing +0.05V, +5V and +8.49V... :) My Spectru…
... a faulty 4116 or filter capacitor (one of the electrolytic ones ... -
128 toaster video artifactsHi Have 2 128k "toasters" ,but i need to connect them through composite,becasuse i live outside the uk, and rf is not an option on my tvs Made a ca…
... video signal. There's a capacitor that performs that mixing, it ... -
Noob needing help with MP3 Loading?Hey all, I literally just got my first Spectrum today, and I've been trying to get Knightmare working on it. However, the tape I have isn't working, …
... made it [URL="http://www.secarica.ro/html/platoon.html"]available ... -
Smallest Kempston joystick addon for e.g. DivIDEI developed a very small Kempston joystick interface. It's allmost ready for production. Specs: - It's small (can't get any smaller I'm afraid) - Re…
... is only microswitch ? Or resistor+capacitor + button ?
Adress decoder ... -
Bad Reset Line on +3eHello there my fellow WoS'ers, Alas I have not been about much over the last couple of weeks, got hit by the flu, headcold and a rather nasty throa…
... could try replacing the debouncing capacitor C13 with something smaller. The ... -
Spectrum +3, Issue 2...I have just had plonked on my desk a nice issue 2 Spectrum +3. I'm not sure if its 100% working yet, as I have not plumbed it into a telly. So, assu…
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[URL="http://www.secarica.ro/html/plus3_hardware.html#inFFport ... "]taken from www.secarica.ro[/URL]
(best ... -
Modulator oddness - previous owner's mod?Hello, just bought a rubber key 48k Issue 3 I'm trying to fix up. I'm wanting to do a composite video out mod ( n00b at this) but the "spare" hole in…
... that "resistor" is actually a capacitor, connected to ground on the ... -
Modulator oddness - previous owner's mod?Hello, just bought a rubber key 48k Issue 3 I'm trying to fix up. I'm wanting to do a composite video out mod ( n00b at this) but the "spare" hole in…
... correct that that is a capacitor. That component is C42 on ... -
Spectaculator: Com port bug?I just bought Spectaculator yesterday but probably erred as the one feature it has that no other emulator has is the ability to use COM ports with an…
... RX connection and a 10nF capacitor before it across the RX ... -
Speccy 128 VideoI have had this problem for so long need to share now, to see if any of you can help i don't live in the uk, tvs here don't have scart i output vi…
... right fix on which resistance / capacitor to cut
found ... -
Strange object, anyone know what it is?[url=http://postimage.org/image/oh3m6vqrp/][img]http://s18.postimage.org/oh3m6vqrp/IMG_9597.jpg[/img][/url] [url=http://postimage.org/image/nsurnxs1x…
Great Scott Marty!!
It's the flux capacitor.
(don't know) -
How the DC-DC converter worksI've not seen this before. The DCC-DC converter inside the Speccy has always been quite a mistery for me: [url]http://www.tablix.org/~avian/blog/arch…
How the DC-DC converter worksI've not seen this before. The DCC-DC converter inside the Speccy has always been quite a mistery for me: [url]http://www.tablix.org/~avian/blog/arch…
... coil) is cut, and a capacitor is put in between.
capacitor C49 has also lower capacitance ... is that there is a capacitor in series of the +9V ...Strange object, anyone know what it is?[url=http://postimage.org/image/oh3m6vqrp/][img]http://s18.postimage.org/oh3m6vqrp/IMG_9597.jpg[/img][/url] [url=http://postimage.org/image/nsurnxs1x…
... double over-head,tranducive value capacitor coupling device that when coupled ...What's going on during a reset?Always wanted to know this. Why does the screen fill with garbage then white lines on black then just a totally black screen? What is happening?
... reset button shorting out a capacitor as is done in 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…
... : I just add small 68pf capacitor to crystal and all problem ...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…
@zaxon
That is brilliant - I hope to get mine finished sometime tomorrow.
Where exactly did you put the capacitor? Just in case anyone else has the same problem.What's going on during a reset?Always wanted to know this. Why does the screen fill with garbage then white lines on black then just a totally black screen? What is happening?
... connected to that same capacitor.
The capacitor is connected to ...What's going on during a reset?Always wanted to know this. Why does the screen fill with garbage then white lines on black then just a totally black screen? What is happening?
... connected to that same capacitor.
The capacitor is connected to ... the recharge cycle of the capacitor with a 500mV to +2 ...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…
... : I just add small 68pf capacitor to crystal and all problem ...Kempston problemsI built a kempston interface a while ago, and it works well, but suddenly, when I load sabre wulf, select kempston interface, the fire button seems t…
... is somehow connected to the capacitor inside the spectrum that keeps ...Scratchy video after composite modIve re done the mod several times on this Issue 4B with the exact same results, anyone know whats up? Caps maybe? [youtube]fa1wk_epgjE[/youtube]
... caused by a failed filter capacitor) or perhaps a problem like ...Noisy PSUI recently picked up a 48k Speccy from eBay. It works fine but the PSU seems a little on the noisy side. I remember my old one gently humming back in…
... psu is the large filter capacitor which had simply become dry ...Issue 4S Schematics and DC-DC circuitA while ago I bought a Spectrum 4S that had problems tuning. I removed the RF tuner as I was not going to use it and did the composite mod. It worked…
... some 'flying' components - usually a capacitor and/or diodes.'Jumping' Composite Video Output on +2bNot having much luck recently... I have converted my +2b to composite out using the info contained [URL="http://www.secarica.ro/html/plus3_hardware.…
... is avoided by removing the capacitor that mixes the audio signal ...Internal amp and signal cleaner for tape inHello! Is there known to work INTERNAL schematic which cleans signal from tape in and amplifies it. I need such thing so i can load from my smartpho…
... emitter follower circuit, and a capacitor on the input to block ...ZX81 back porch fix using LM1881Hello! Has anyone here did the back porch fix for ZX81 using LM1881? I did it this weekend and instead of clear black on white i got black on dark g…
... use AC coupling through a capacitor (10u would find). What's ...Bad signal on my ZX Spectrum+ 48kHi there... I just got my very first Spectrum, after search high and low for quiet some time :) But unfortunately, when I plug it in my tv, I don't …
The TV will have DC blocking on the input anyway so the capacitor is unnecessary. Just a simple bit of wire is fine
