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+2 grey PSU capacitor changeHi I opened up a +2 grey power supply (2.1A max output) unit in order to replace the aged electrolytic capacitor inside, just like I always do with …
... to replace the aged electrolytic capacitor inside, just like I always ... is one big 6000uF 16V capacitor inside BUT i can't ... with a fresh 4700uF 25V capacitor?
Is there be any ... -
grrr The Capacitor PlagueI'm getting fed up of The Capacitor Plague. If you don't know what this is, I'll tell you the result. Your computer stops working. Sometimes, it won'…
... getting fed up of The Capacitor Plague. If you don't ... -
Composite video for 48k Capacitor orientationHello, My multisystem TV is acting up and I'm unable to navigate the menu to tune in the RF signal for my speccys. However the A/V input still works.…
... go with the added 100uF capacitor method.
However in ... -
C46 Capacitor MarkingHi all I've just watched this part of this video: [url]http://www.youtube.com/watch?v=TeCVt2T-YSo&t=17m0s[/url] And he says the marking is incorrec…
... knowledge but currently my new capacitor is fitted the way the ... -
Composite Video Mod Capacitor ValueCouldn't find any thread where this has been asked before but I'm not convinced the search in this forum is the best...:) Due to the recent retire…
... mention using a 100uF 10v capacitor to improve the signal. I ... -
48K Issue 3B slowly fading over 15-20 seconds, capacitor gets hot.Hi folks, Recently my much-modified* RAM testing 48K board failed with a hot/burny smell so I turned it off quickly for looking at later. Thinking…
... powering the board and the capacitor marked on the pic gets ... -
wantedI need a booting floppy disk made by W95B or later. I need it to boot before running powerquest drive image to have access to fat32 disks. If someo…
... need a difficult to get capacitor to fix something. It is ... -
Composite video mod on a 16K issue 2, not workingI carried out the composite video mod detailed here: [url]http://user.tninet.se/~vjz762w/fixuspec.html[/url] I chose the one that requires the trans…
... be 75ohms (correct) and the capacitor had the correct value on ... -
48k one dead, one dodgyhello everyone. I have 2 48k spectrum +'s (the one with the QL case). Both boards have issue 3B on them near the speaker. The first will power up …
... need to pop in another capacitor or similar.
I ... -
Issue two picture qualityDoes anyone know if issue two and earlier spectrums have worse picture quality (in general, beside colours) compared to issue 3 and later? I mean on…
... adjusted through the resistor and capacitor trimmers. -
NMI : especially PitersHello Piters, here the link to your NMI-button. [url]http://members.tripod.com/~piters/nmibutto.htm[/url] I don't understand your reason to place …
... to place the resistant and capacitor.
I just want to ... -
Microdrive wont LOAD - Help PleaseI have many Microdrive cartridges containing Original Programs and Backups. I have tried to read and load from any number of the cartridges all seem…
... Interface 1 so have replaced Capacitor C6 (across the 5V line ... -
Irrelevant QuestionThis is an indeed irrelevent to the speccy scene question but since i searched and i searched and coulnd't find any help elsewhere, i desided to ask …
... , i know its not a capacitor nor a resistor, the board ... -
Free slightly duff 48k SpectrumHi, I have a Spectrum 48k for anyone who wishes to take it off my hands but it has the following issues: - The EAR port doesn't seem to work proper…
... inside there - probably meaning a capacitor is begging to pop or ... -
Socket to me..Specchums ! I'm laying out the PCB for the ULA replacement, and I need to know how common it is for the following IC's to be socketed (all to the ri…
... socketed or unsocketed.
Capacitor C28 next to the ULA ... -
Speccy 48In my messing around with hardware, I have managed to nacker a Speccy 48 board. Specifically, i have managed to mess up the power inverter section. …
... section having an extra Axial capacitor (Labelled C79), a very large ... -
Scary electric businessThe tranformer that supplies 12V to my monitor has started to leak. I suppose it's the capacitor inside. Should I hunt down a different one? Is it sa…
The tranformer that supplies 12V to my monitor has started to leak. I suppose it's the capacitor inside.
Should I hunt down a different one? Is it safe to continue using for now? Is it worth it, to try to get it fixed with new capacitors? -
issue 2 board c34 getting hotHi All, Can anyone help with c34 getting hot very quickly? I`ve got an issue 2 board, there is no `buzz` from coil. yet the spectrum initalises to co…
... C34 is presumably a smoothing capacitor for the 5v line, so ... -
General question about electronics I guess... (128k +2a)[Short question] When I very slightly put my finger on top IC15 on my +2A the TV picture becomes crazy and the spectrum acts if it just resets I don…
... caused by the
IC capacitor being bad ? IC itself bad ... -
What's this hardware?[URL="http://www2.snapfish.com/slideshow/AlbumID=1351742020/PictureID=39192676020/a=1759991020_1759991020/otsc=SHR/otsi=SPIClink/COBRAND_NAME=snapfis…
... 1N4xxx diode and an electronic capacitor for smoothing the voltage, nothing ... -
RBG monitor for Spectrum?I'm using a very old TTL RGB monitor with my Spectrum, with a RGB adapter that I made many years for my Sinclair QL. It works perfectly with my QL, b…
... . Theres one chip and a capacitor, and the output is a ... -
Snow on screen of 48K Speccyok you wizards I fixed up my 4116 ram issue as Winston and McLeod advised me before by replacing with 4164's.... all I could find here in Singapore (…
... by composite with a decoupling capacitor. Many thanks in advance...
Help identifying hardware peripheralA few months ago someone gave me all their Speccy stuff. The Spectrum itself was broken, but I got with it quite a few useful peripherals. Among thes…
... than straight ones), and a capacitor or two. The board is ...Trying to repair a 128K (heatsink)I've bought another ZX Spectrum 128K (heatsink model), but unfortunately the last owner did not tell me it did not work.... Because this Speccy also…
... cause, and replaced the 100pF capacitor, measured both resistors and replaced ... part?
Could the trim-capacitor be defective??IF1 and 48k Capacitor QuestionsHi, I am not very knowedgeable about electronics but I am willing to give stuff a go.. I have a microdrive that is not performing and for various r…
Hi,
I am not very knowedgeable about electronics but I am willing to give stuff a go..
I have a microdrive that is not performing and for various reasons I will explain below I would like to replace the IF1 electrolytic capacitors ...Spectrum 48K with a thyristor PSU possible?Is it posssible to use a Spectrum 48K with a thyristor switched PSU? I have a PSU with a thyristor, 4 diodes, one electrolyt capacitor, some resistor…
... thyristor, 4 diodes, one electrolyt capacitor, some resistors and a transistor ...Strangely, I just can't STOPOK, I bought an RWAP keyboard matrix and put it in my Spectrum+ last night (ta), I did the Swedish composite mod with a capacitor, I fixed the missin…
... Swedish composite mod with a capacitor, I fixed the missing joystick ...So you need to double (or triple, or quadruple) the clock speed...No particular reason for posting this, other than I was looking at an eZ80 evaluation board that does this, and that jogged my memory of a project I'…
... filter, which is just a capacitor and resistor - effectively a ... with the CPLD (the capacitor is hidden by the oscilloscope ... probe). The frequency setting capacitor for the 74LS629 is just ... filter and the frequency setting capacitor to set the mid ...How to fix dc voltage on a 48+ psuAfter dinner, after a womble video out mod on a "new" purchased 48+ , just in the remaining time I tested the voltage of its psu and, surprise surpr…
... were 4 diodes and a capacitor... No reostate (I hope this ...Damaged sound-output of the spectrum +3Hallo folks, a few days ago I got a Spectrum 128 + 3, but there might be problems with the sound-output. For comparison I have got a Spectrum 128 + …
... the soundchip or only a capacitor?
Do you maybe have ...
