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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 …
... 't know what an electrolytic capacitor is, leave well alone and ... a volt. At this stage, replace TR4/TR5 if you don ... -
I have returned! This time with no tape problems!Hello all. Some of you may remember me from about a month or so ago with this little spawn of satan... :lol: [IMG]http://www.ridgedpixel.co.uk/proj…
... be blue as standard), and replace with radial or axial components ... out - the silkscreen markings for capacitor polarity are wrong for C46 ... -
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…
... electrolytic capacitor installed the wrong way around, you ought to replace it ... -
Video fault on issue two ZX boardI've trawled the Internet and drawn a few blanks as to where to look to resolve the fault with my issue two board. I'm hoping a few of you knowledgea…
... the 6C001E version in to replace the 5C102E to test? Nothing ... and the output via a capacitor (22uF, 47uF or 100uF, + terminal ... -
Faulty 48+ Help NeededHi, This is what I get when I plug in the spectrum, this is tuned in. Vid shows a reset. Any ideas, or pointers on the first thing to check. Keyboa…
... the next step is to replace TR4. Use a ZTX651.
replace at least some of the ... fits, a higher voltage capacitor can replace a lower voltage type. Most ... -
Dot crawl?Hi, As I'm rather new to the hardware of the spectrum, just to confirm: is this video showing "Dot crawl" ? [url]https://www.youtube.com/watch?v=_U…
[QUOTE=rga24;771509]You can adjust the ULA clock frequency on an Issue one or Issue two Spectrum by adjusting TC1. On the others it is fixed; you would have to replace a capacitor.[/QUOTE]
But would that help in reducing the dot-crawl effect? -
'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... the new coil, power socket, capacitor for C47 and the regulator ... few games ;)) and I will replace the remaining capacitors at some ... -
Noob repairs of an S2 and S6AI received two Spectrums a Series 2 and a Series 6A both of which are not working. I don't know anything about electronics so thought my lad and I wo…
... , if any capacitor looks to have leaked I would replace it before ... Speccy 48K board I'd replace all electrolytic capacitors before running ... -
PlusDlite v2014.1 - problems with floppy power supplyI received a small batch of boards of the new PlusDlite design, which is similar to the original PlusD, with GAL etc. The main differences with the o…
... . Compare schematics - DONE
2. Replace 100uF at oscillator circuit with ... Truppel)
3. Increase reset capacitor from 100nF to maybe 10uF ... -
Weird symptom number 2...I got a new keyboard membrane for my Spectrum+ plugged it in and low and behold the weird left to right printing of the copyright message disappeared…
... /> Other than that, we'll replace 7805, TR3, TR6 and see ... />
As an aside the capacitor that leaked was C74, this ... -
Smokin... more 48k woesHi, it looks like I've converted another Spectrum 48K+ into a smoke machine. I'd been rebuilding an Opus Discovery unit and everything looked good. …
... you can find at the capacitor C45. )If there is that ... replacements for TR4/5 and replace these tomorrow. Work was too ... -
You get what you pay for-You live and learnDecided to try for a cheap spectrum + on ebay described as not being able to tune it and some keys did not work - haha Duly received and opened up a…
... 1A diodes, replace with 3A types, replace the smoothing capacitor for reliability.
Hacking a +2 into a shorter caseIf anyone's got a copy of the notes or text they posted about re-wiring the +2 joystick ports or hooking up a tape recorder to the motherboard casset…
... worst case scenario you can replace the grey keytops with black ... /> 2, Connect a 100nF ceramic capacitor to the tip / centre contact ... leg of the 100nF ceramic capacitor on your 3.5mm mono ...not working issue 3Hi all, I received this mobo from ebay, after start i have this on screen [img]http://forest.no-ip.org/wos/issue3_01/20150728_135908.jpg[/img] …
... IC or a dead electrolytic capacitor is overloading one of them ... suggest the following:
- Replace all electrolytic capacitors.
- Check ...Spectrum CapacitorsLooking for some opinions here, if I may? In the 80's and 90's I used to repair Spectrums and other machines for a living so I'm reasonably famili…
... ] (electrolytic) capacitor, it isn't too much trouble to replace them all ... tend to shy away from capacitor replacement as well, if it ... replace one, I prefer to replace 'em all. Preferably by a ceramic capacitor ...Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... the temperature rating of the capacitor. Any other markings are manufacturer ... of the same value (so replace a 1uF with a 1uF ... cannot find a new electrolytic capacitor with the same voltage rating ... 105 degrees C wherever the capacitor is next to any component ...Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... />
Andreas said "You should replace the 2 small 10 uf ... feel for what to order , capacitor wise , for the 3 of ...Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... DS with no problems. (simply replace te opus.rom in folder ... /> But i have:
a capacitor blue of 100n over ic5 ...No serial numberI recently bought a 1982 issue 2 spectrum which I believe is a 16k upgraded to 48k. There is no serial number on the case. Does anyone know why th…
... age.
I have replace the electrolytic capacitors and added ... cable as you noticed, also capacitor and resistor to the power ...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…
... do wonders here. But first replace those old electrolytic caps if ... too small value of series capacitor in composite video output. 47uF ...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…
... do wonders here. But first replace those old electrolytic caps if ... have been modified, this 22uF capacitor will not have a silk ... too small value of series capacitor in composite video output. 47uF ...Dead issue 3b with black and white barsHi all, I've been donated an issue 3b which has some nice black and white bars with a few flashing blocks. I've done a few RAM tests and could spo…
... /> OK, I'm going to replace the CPU. Ordered a socket ... . Note, the leg from the capacitor isn't touching, it's ...Grey +2 tape motorAnyone know where to get a tape motor for a grey +2? Mine is on its last legs. When I got this +2 I serviced the deck and put new belts in but the…
... springs that hold them in. Replace the brushes if worn down ... noisy, check that the ceramic capacitor is properly connected across the ...Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... . That's why the nearby capacitor is rated at 400V.
If you do replace the electrolytic capacitors, use good ...Weird 128k (toastrack) PSU modificationHi all. I've just picked up a bunch of machines from ebay and the 128 PSU has this weird modification: [img]https://www.dropbox.com/s/hetr2zlp1…
... may have been used to replace the diodes in the PSU ... then be smoothed by a capacitor and fed to the Spectrum ...I've Killed my BBC Micro :(So, today I pluged in my BBC Micro via my step up converter. It did the customary double beep. I was buzy tuning in the LCD tv to it, as I'd lost the…
... for C9, the start-up capacitor. You may also need ...
PME271M610 capacitor, 100nF 275Vac
PME271M510 capacitor, 10nF 275Vac
Capacitor Al, 105 deg C, 220uF, 10V or 16V (to replace ...
Or just get the capacitor kit from this very trusted ...Spectrum 48k Power Supply?Guys - I've got a Spectrum 48k inbound from the UK. I want to scrounge a power supply to use when it arrives. What size jack did it use and what ar…
... , the service manual specifies the capacitor under the heatsink for issue ... a 105C type... renewing this capacitor being part of the required ... /> I actually would like to replace everything with 125C parts, but ...Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
... polarity screen printed for one capacitor. If you have a ... electrolytic capacitors, you should replace the existing electrolytic capacitors with ... the existing is marked 22uF, replace with a 22uF). The ...
It is possible to replace some of the low value ...Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
... />
2) I managed to replace them all but used 2 ... necessarily the same type of capacitor: sometimes they are not the ... to come up with an capacitor type I had to remember ...Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
... to update and check my capacitor "map" of the PCB
replace them all at one go ... out the caps , and then replace them using the now totally ...
