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Search Again :: Adv Search 753 results in 0.001s
<1…16171819202122…26>
  • '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…

    ... . Change C46, then the Zener diode at D16 (5v1 Zener) if ...
    blueowl0708 blueowl0708 September 2014 Hardware
  • Modern PSUHello everyone, I'm looking for a modern PSU for my Spectrums and my dual set of 3.5'' floppy drive+HxC floppy emulator. The one for Spectrum should …

    ... PSU with only a transformer, Diode Bridge and a capacitor. Every ...
    Pierre Pierre October 2014 Hardware
  • Modern PSUHello everyone, I'm looking for a modern PSU for my Spectrums and my dual set of 3.5'' floppy drive+HxC floppy emulator. The one for Spectrum should …

    ... PSU with only a transformer, Diode Bridge and a capacitor. Every ...
    spodula spodula October 2014 Hardware
  • Ideas needed for Doctor Who puzzles.So, I'm finally doing something about my dream of making a Doctor Who game by...well, doing it. :) ...it'll be a Windows/Mac game though - not a Spec…

    ... this way, damage the power diode so that his energy gets ...
    hikoki hikoki October 2014 Chit chat
  • Kempston joystick detectionIn both [url="http://skoolkit.ca/disassemblies/manic_miner/asm/34252.html#34332"]Manic Miner[/url] and [url="http://skoolkit.ca/disassemblies/jet_set…

    ... to the LS366, not a diode, but as the input for ...
    spodula spodula October 2014 Hardware
  • How important is the 9V line?I'm in the middle of resurrecting an Opus Discovery. The transformer is gone so Im using a small switched mode PSU from a PC. My plan is to bypass …

    ... /> Can be use IN5404 type diode = 3A , 10A10 = 10A !
    This ...
    Anemos Anemos October 2014 Hardware
  • Dodgey R62 / D16 on Issue 2?Hello all, I am still beavering away trying to work out why my Issue 2 fails and after a much closer visual inspection I noticed what looks like som…

    ... board is a 5v1 Zener diode, hence the different markings from ...
    balford balford October 2014 Hardware
  • Dodgey R62 / D16 on Issue 2?Hello all, I am still beavering away trying to work out why my Issue 2 fails and after a much closer visual inspection I noticed what looks like som…

    ... film type) and the BA157 diode, also get some ZTX651 transistors ...
    1024MAK 1024MAK October 2014 Hardware
  • Dodgey R62 / D16 on Issue 2?Hello all, I am still beavering away trying to work out why my Issue 2 fails and after a much closer visual inspection I noticed what looks like som…

    ... 1N914

    5V1 zener diode - don't be tempted to ...
    DEATH DEATH October 2014 Hardware
  • Dodgey R62 / D16 on Issue 2?Hello all, I am still beavering away trying to work out why my Issue 2 fails and after a much closer visual inspection I noticed what looks like som…

    ... had 3 (they had the diode and resistor in stock so ...
    Korinel Korinel October 2014 Hardware
  • 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…

    ... about 0.6V for each diode you have in place, and ...
    DEATH DEATH October 2014 Hardware
  • 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…

    Just a quick observation from your photo, but there seems to be very little solder on the positive pin for D9. Probably nothing to do with your other issues, but it is probably worth checking!
    Simon_Carr Simon_Carr November 2014 Hardware
  • 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…

    ... the multimeter then, using the diode test mode check that there ...
    balford balford November 2014 Hardware
  • 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…

    ... the multimeter then, using the diode test mode check that there ...
    Korinel Korinel November 2014 Hardware
  • a harlequin keyboard option (+2a)Hi guys. Finally got around to this, I am using a keyboard from a +2a connected to my harlequin. [IMG]https://farm4.staticflickr.com/3932/1560029…

    ... be as simple as a diode array, not sure, I haven ...
    guesser guesser November 2014 Hardware
  • Flickering RGB -> SCART output.Hello all, For my toast rack I have bought a [URL="http://www.ebay.co.uk/itm/Sinclair-ZX-Spectrum-128K-High-Quality-RGB-Scart-Lead-Video-Cable-TV-Le…

    ... "bright" goes to a separate diode on each of the RGB ...
    Korinel Korinel November 2014 Hardware
  • +3e simple ide interfaceHi guys, I want to make a +3e with my +2a. I'm thinking of making the simple 8bit ide interface (internal) and connecting it to a 40 pin ide to sd r…

    ... 00 00 00 00
    D9 01 08 20 00 01 ...
    guesser guesser January 2015 Hardware
  • +3e simple ide interfaceHi guys, I want to make a +3e with my +2a. I'm thinking of making the simple 8bit ide interface (internal) and connecting it to a 40 pin ide to sd r…

    ... 00 00 00 00
    D9 01 08 20 00 01 ...
    Lost Lost January 2015 Hardware
  • Switched voltage regulatorIn the past a replacement voor the (hot!) 7805 has popped up a couple of times in various threads. As far as I know, Recom Power Inc. was always ment…

    ... recommend to insert an additional diode in the power line. This ...
    HZJ HZJ January 2015 Hardware
  • RGB video issue on +2 and +3. Signal high?I have a couple of +3's and a new +2a that arrived today. When I plugged in the +2a using my RGB lead from Retro Computer Shack I was reminded of a n…

    ... /> I'll give you the diode point though. ;)
    RobeeeJay RobeeeJay January 2015 Hardware
  • Strange keyboard port reads on 48+Hi all, I don't know whether it was already discussed (I also searched forum, but there are too much of results searching "48k keyboard" so I didn't…

    ... ) A8 with /IORQ before keyboard diode and that "phantom 0" has ...
    ub880d ub880d January 2015 Hardware
  • Zx spectrum 48+ help pleaseI have just had a look at my spectrum 48+ and I get this [IMG]http://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xfa1/v/t34.0-12/10965632_101526175830…

    ... circuit using your multimeter's diode test mode. If that doesn ...
    Zorn Zorn February 2015 Hardware
  • ZX Spectrum (pre-128K) Edge ConnectorCan anyone point me in the direction to a decent diagram of the ZX Spectrum (pre-128K) Edge Connector. I can't believe I've been searching for nearl…

    ... )

    Although those 1N4148 diode leads in the last two ...
    1024MAK 1024MAK March 2015 Hardware
  • ZX Spectrum issue 6a - yellow border problem<p>Hello!</p><p>I have problem with my Sinclair ZX Spectrum issue 6A, 48K. </p><p>I have changed low memory (all 4116 IC's) and coil, all electrolyti…

    Hello!Voltage on pin 6 is 2.22V. I noticed that after ~5 min., TR7 is very hot.Update: replaced TR7 and D9. TR7 is still very hot.
    zxuser zxuser May 2015 Hardware
  • ZX Spectrum issue 6a - yellow border problem<p>Hello!</p><p>I have problem with my Sinclair ZX Spectrum issue 6A, 48K. </p><p>I have changed low memory (all 4116 IC's) and coil, all electrolyti…

    ... hot.Update: replaced TR7 and D9. TR7 is still very hot ...
    1024MAK 1024MAK May 2015 Hardware
  • 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…

    ... />
    1, Connect a 1N4148 diode across R82 (front left of ... ) with the stripe on the diode on right hand side. That ... error.


    1N4148 diode picture

    Mark
    1024MAK 1024MAK May 2015 Hardware
  • ZX Spectrum issue 6a - yellow border problem<p>Hello!</p><p>I have problem with my Sinclair ZX Spectrum issue 6A, 48K. </p><p>I have changed low memory (all 4116 IC's) and coil, all electrolyti…

    ... hot.Update: replaced TR7 and D9. TR7 is still very hot ...
    HZJ HZJ May 2015 Hardware
  • Issue 3 /3b power rail improvements<!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:AllowPNG/> </o:OfficeDocumentSettings> </xml><![endif]--> <p class="MsoNormal">Hi F…

    ... the adaptor was directly (via diode) connected with +12V for memory ...
    roko roko June 2015 Hardware
  • Issue 3 /3b power rail improvements<!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:AllowPNG/> </o:OfficeDocumentSettings> </xml><![endif]--> <p class="MsoNormal">Hi F…

    ... the adaptor was directly (via diode) connected with +12V for memory ... input voltage passing through the diode that Roko talks about. This ...
    1024MAK 1024MAK June 2015 Hardware
  • where to find Harlequin rev. F all mods till now ?Hi all :) because no more broken speccys around for now, is time to build first of my Harlequin's rev F, I looking in forums and look at Ingo posts…

    ... : even if you soldered the diode bridge in false direction most ... its sockets. Solder now the diode bridge in the right direction ...
    ingo ingo August 2015 Hardware
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