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Search Again :: Adv Search 1000 results in 0.002s
<1…17181920212223…34>
  • 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…

    ... filter circuit with a few capacitors / resistors, etc

    it ...
    Macc Macc May 2012 Chit chat
  • TC1/TC2 Capacitance?What value of capacitance should the TC1 and TC2 have in an Issue 2 spectrum? (min and max value). I have looked around, but have been unable to find…

    Indeed, to my surprise, no info around. As both capacitors are in series
    with an oscillating xtal in the MHz range, my guess is that the value will be between 10 pF and 50 pF.
    roko roko May 2012 Hardware
  • TC1/TC2 Capacitance?What value of capacitance should the TC1 and TC2 have in an Issue 2 spectrum? (min and max value). I have looked around, but have been unable to find…

    ... , no info around. As both capacitors are in series
    with ...
    Johan1973 Johan1973 May 2012 Hardware
  • 48k PSU UpgradeCan anyone give the definitive word on a PSU upgrade (rather than just a replacement) for 48k machines? I'm thinking of adding at least an IDE inter…

    ... /> Would you use any decoupling capacitors in your design Johan? and ...
    napoleonblownaparte napoleonblownaparte May 2012 Hardware
  • 48k PSU UpgradeCan anyone give the definitive word on a PSU upgrade (rather than just a replacement) for 48k machines? I'm thinking of adding at least an IDE inter…

    ... rated PSU (with fresh electrolytic capacitors in it!), and I doubt ...
    RetroTechie RetroTechie May 2012 Hardware
  • Zx 48k after the ic7805 other problemHi everyone, i am Tiago from Portugal, and i am trying to repair a Zx Spectrum 48K. the machine didn't do anything, no image, no sound, nothing. The…

    ... instant at power on while capacitors charge, but if it doesn ...
    Zorn Zorn May 2012 Hardware
  • My Pc doesn't work in my office...it's a strange, thing, he works perfectly at home, and other places, but for 2 weeks now, every time I try to use it in the office (the place i need …

    Another thing I forgot to mention. Visually inspect the capacitors. If any of them is swollen or looks like it's about to open, your mobo may be going bad. If that's the case I wouldn't be able to help.
    zxbruno zxbruno June 2012 Chit chat
  • My Pc doesn't work in my office...it's a strange, thing, he works perfectly at home, and other places, but for 2 weeks now, every time I try to use it in the office (the place i need …

    ... . If it's some bad capacitors then I'll just replace ... a hardware guy so replacing capacitors is not feasible.

    Timmy Timmy June 2012 Chit chat
  • My Pc doesn't work in my office...it's a strange, thing, he works perfectly at home, and other places, but for 2 weeks now, every time I try to use it in the office (the place i need …

    ... . If it's some bad capacitors then I'll just replace ... a hardware guy so replacing capacitors is not feasible.

    Lee Fogarty Lee Fogarty June 2012 Chit chat
  • Better Picture QualityToday I built a PSU and RGB-SCART monitor cable for my +3. However, I'm not too happy with the picture quality. It appears that there's like halos a…

    ... a bit by adding small capacitors (33pF to 1nF) from the ... VGA). I added resistors and capacitors, see here:
    [url]https ...
    ingo ingo June 2012 Hardware
  • Better Picture QualityToday I built a PSU and RGB-SCART monitor cable for my +3. However, I'm not too happy with the picture quality. It appears that there's like halos a…

    ... try to insert the resistors/capacitors I mentioned above maybe also ...
    ingo ingo June 2012 Hardware
  • Anyone knows how these work?[url]http://www.crumblenet.co.uk/keyb/rpacks.html[/url] I don't know if Casio keyboards were popular in the U.K. I grew up with a Casio PT-82 and al…

    ... -programmable ROM and 2 decoupling capacitors - without a datasheet, or at ...
    napoleonblownaparte napoleonblownaparte June 2012 Hardware
  • Highres Disciple picturesI couldn't find highres pictures on Google, so I was obliged to make them myself. This one had some repairs: defective PAL chips replaced by GAL's, s…

    ... replaced by GAL's, some capacitors replaced, bad soldering contacts (all ...
    Julio Julio June 2012 Hardware
  • Wanted: ZX 128K & Solid state InterfaceHi. I live in Brazil and would like to buy a a perfectly working ZX128 and some mass storage device. Anyone has something like that to sell? I'm no…

    ... replace some of the electrolytic capacitors - you said you want a ... of life in it. These capacitors deteriorate over time and will ...
    BloodBaz BloodBaz June 2012 Wanted
  • 4116 replaced by 4164 - "Noisy" paper?After I replaced my 4116's with 4164's and hooked them up to +5V, disconnected -5V and +12V, I have what looks like vertical lines in the paper, like…

    ... />
    Have you replaced electrolytic capacitors on this machine? Is there ...
    RetroTechie RetroTechie June 2012 Hardware
  • Using an ATX power supply - Spectrum 48kOK... I have an Issue 3 48K model and the DC-DC converter does not work and I can?t make it work. :( There is a MOD to use an ATX power supply on the…

    ... . :(
    I changed all eletrolytic capacitors, diodes D11, D12, D15... and ...
    Turrican Turrican June 2012 Hardware
  • Using an ATX power supply - Spectrum 48kOK... I have an Issue 3 48K model and the DC-DC converter does not work and I can?t make it work. :( There is a MOD to use an ATX power supply on the…

    ... . :(
    I changed all eletrolytic capacitors, diodes D11, D12, D15... and ...
    Johan1973 Johan1973 June 2012 Hardware
  • Video issue with my 1st 48K SpeccyHi all I'm a long time retro fan and I just picked up my first Speccy. It's a rubber key 48K with a rev 4a mainboard. It's a nice clean unit and i…

    ... likely faulty / dried up electrolytic capacitors in there (old age combined ... iron. You'd need 2 capacitors, [I]combined[/I] value something ...
    RetroTechie RetroTechie July 2012 Hardware
  • Connecting Spectrum +3 to VGADoes anyone have any experience with this: [url]http://wp1114205.wp150.webpack.hosteurope.de/xtcmodified/product_info.php?products_id=29[/url] I'm …

    ... , with some resistors and 3 capacitors. A friend of mine uses ...
    ingo ingo July 2012 Hardware
  • 48K and wavy lines.It seems all Spectrum related things are breaking here at casa de Don Pedro. After the problem with my old ZX81, I went over to my issue 2 ZX Spectru…

    Check capacitors in the power supply parts of the circuit. Unsmoothed crap on the 12V line might be the culprit.
    guesser guesser July 2012 Hardware
  • 48K and wavy lines.It seems all Spectrum related things are breaking here at casa de Don Pedro. After the problem with my old ZX81, I went over to my issue 2 ZX Spectru…

    ... still has its original electrolytic capacitors, replace all of them. It ...
    Zorn Zorn July 2012 Hardware
  • 48K and wavy lines.It seems all Spectrum related things are breaking here at casa de Don Pedro. After the problem with my old ZX81, I went over to my issue 2 ZX Spectru…

    ... buy, and yes, all electrolytic capacitors and a LM7805 are already ...
    pmsr pmsr July 2012 Hardware
  • 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…

    ... a few new transistors and capacitors. I never really looked into ...
    joefish joefish July 2012 Hardware
  • Faulty 128K toastrack keeps resettingHi. I have this toastrack which worked nicely for let's say 40 minutes and then a weird fault showed up. It keeps resetting over and over, sometimes…

    If not capacitors, the next most probable cause tends to be a memory fault.
    Winston Winston August 2012 Hardware
  • Computer repair questionAn ewgf-style post: I'm usually able to find my way around things, search online for solutions and a few other things, but this time I'm unsure of w…

    "and I do see two capacitors leaning slightly and one that ...
    beanz beanz August 2012 Chit chat
  • Computer repair questionAn ewgf-style post: I'm usually able to find my way around things, search online for solutions and a few other things, but this time I'm unsure of w…

    For more info about bad capacitors, you might consider visiting;
    [url]http://www.badcaps.net/[/url]
    Knik Knik August 2012 Chit chat
  • Computer repair questionAn ewgf-style post: I'm usually able to find my way around things, search online for solutions and a few other things, but this time I'm unsure of w…

    ... ) and I do see two capacitors leaning slightly and one that ...
    RetroTechie RetroTechie August 2012 Chit chat
  • 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's fantastic! I wonder the same (what are doing clamp diodes in an output signal?) and simplified my EAR circuit, removing series capacitors and the like. Yours is much more sophisticated, yet keeping it small. My congratulations! :)
    mcleod_ideafix mcleod_ideafix August 2012 Hardware
  • Computer repair questionAn ewgf-style post: I'm usually able to find my way around things, search online for solutions and a few other things, but this time I'm unsure of w…

    ... ) and I do see two capacitors leaning slightly and one that ... iron and, for example, change capacitors. I can't say for ...
    freddyhard freddyhard August 2012 Chit chat
  • 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…

    ... my EAR circuit, removing series capacitors and the like. Yours is ...
    superfo superfo August 2012 Hardware
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