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Search Again :: Adv Search 1000 results in 0.012s
<1234567…34>
  • My new Spectrum +3 has no start menu.Hi all, I recently took delivery of my 'new' Spectrum +3 from a Fleebay auction. So I serviced the drive on Saturday as it had a snapped drive belt …

    ... )

    Turning to the fault finding/repair, I'd start with ...
    balford balford February 2014 Hardware
  • Grey +2 DiedHi all, Thrashing my +2 playing Mugsy last night and it did this... [URL="https://m.flickr.com/photos/83515822@N05/13012551693/lightbox/"]https://m…

    ... the oscilloscope. At this point fault finding is very much dependent on ...
    balford balford March 2014 Hardware
  • Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…

    ... tools for this level of fault finding.

    Give me some ...
    1024MAK 1024MAK May 2014 Hardware
  • Issue 2 Spectrum - Black screenHi I have an issue 2 spectrum which I'm having some issues with. I bought it on ebay so have no idea of the history or how it came to be broken. Whe…

    ... /> After a little bit of fault finding, I found a couple of ...
    whoremoan whoremoan November 2014 Hardware
  • 48K Upper memory issues?Having more issues with the 48K spectrum I just fixed that had the black screen in this thread [URL="http://www.worldofspectrum.org/forums/showthread…

    ... of the bibles of Spectrum fault finding and fixing so keep it ...
    balford balford December 2014 Hardware
  • Resurrection of ZX SpectrumHello everyone. I recently emerged from my attic bearing my childrens 128k ZX Spectrum +2 with a bag of games etc. Like many before it hasn't seen…

    ... either a RAM chip fault, a ROM chip fault or a Z80 ... CPU fault.

    But the ... matter, the next stage of fault finding is to swap the ROM ... the faulty one. If the fault does not move with the ...
    1024MAK 1024MAK January 2015 Sinclair Miscellaneous
  • RobikHello to all, Is anyone experienced on this russian clone? I have one at hand with corrupted screen (but it boots and replies to keyboard inputs so …

    ... all who suggested the standard fault finding procedure: I already stated that ...
    Falco-F8L Falco-F8L January 2015 Hardware
  • RobikHello to all, Is anyone experienced on this russian clone? I have one at hand with corrupted screen (but it boots and replies to keyboard inputs so …

    ... all who suggested the standard fault finding procedure: I already stated that ...
    flopping flopping January 2015 Hardware
  • Guess the video faultI've two dead flesh Spectrums, one a 16K issue 2 outputting white with a tinge of blue (not as extreme as photo shows) with two pink horizontal lines…

    ... load and run games, the fault is likely to be in ... symptoms. But as with most fault finding, it is a process of ...
    1024MAK 1024MAK January 2015 Hardware
  • Video ZX Spectrum+ 48k<span>Good day ... is a bit of time that I try to fix my zx spectrum ... I replaced the ram 4116, all electrolytic capacitors ... but the monitor loo…

    ... Spectrum to see if the fault moves.

    Note that ... broken, it does hinder the fault finding advice we can give. To ... it points to a ULA fault.

    The program can ...
    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…

    General Z80 fault finding:-
    Check the supply voltages ( ...
    1024MAK 1024MAK May 2015 Hardware
  • Just Speccy 128Wow, got home and found that I have received a parcel from Zaxon containing a&nbsp;Just Speccy 128 PCB :-) B-)<br>Now all I need is a parts list, th…

    ... , it only works erratically and fault finding is a nightmare... So yes ...
    1024MAK 1024MAK May 2015 Hardware
  • Replacing foam pads on top of heatsink in Spectrum+Inside a Spectrum+ that I'm working on, the 2 foam pads on top of the heatsink (see photo for where they were) had become a disintegrated mushy pile …

    ... [i]a lot[/i] of fault finding, on [i]many[/i] boards ... one is fine for basic fault finding on low voltage boards like ...
    1024MAK 1024MAK July 2015 Hardware
  • 48k not startingHi team, I have 2 48k's, one works (Issue 4s), one doesn't (Issue 4a). The non-working one appears to start, but not finish the RAM test. The pape…

    ... ="http://www.worldofspectrum.org/SpectrumRepairGuide/"]fault finding guide[/url].
    [*]Alternative: build ...
    1024MAK 1024MAK September 2015 Hardware
  • 48k not startingHi team, I have 2 48k's, one works (Issue 4s), one doesn't (Issue 4a). The non-working one appears to start, but not finish the RAM test. The pape…

    ... ="http://www.worldofspectrum.org/SpectrumRepairGuide/"]fault finding guide[/url].
    [*]Alternative: build ... have started working through the fault finding guide. I'd be very ...
    neillsun neillsun September 2015 Hardware
  • 48K colour issuesGentlemen, A friend handed me over a number of 48K machines to service, and among these there are four of them with various flavours of colour iss…

    Nope, seems like you're doing a good job of fault finding this :)

    B
    balford balford September 2015 Hardware
  • 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…

    ... not you can either continue fault finding the remaining 4116 DRAM chips ...
    1024MAK 1024MAK November 2015 Hardware
  • 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 …

    ... example , there is a minor fault (like the one it has ... now) and with this fault in mind , the socketed chips ... to speed up the "trivial" fault finding
    harriusherbartio harriusherbartio November 2015 Hardware
  • Sudden death of ZX Spectrum 48KHello A friend gave me a 48K rubber keyed Spectrum. I brought it home, hooked it up to my little TV and powered it up. I was very happy to see t…

    ... couple of guides. The Spectrum fault finding guide (I will post the ...
    1024MAK 1024MAK December 2015 Hardware
  • Dead 48k and +2I have a couple of questions. My old 48k had a very wobbly power socket so bought a new one and soldered it on. It will not work at all now? Is ther…

    ... which is important for basic fault finding.

    As with everything ... most important range / function for fault finding is the 20V DC range ...
    1024MAK 1024MAK January 2016 Hardware
  • Testing 4116 type DRAMsHappy New year All! I'm managed to find some time to repair some more Spectrums :) woo hoo. I have a couple with busted lower RAM, Sooo, I appr…

    ... to suggest this method when fault finding.
    Having said that, if ...
    1024MAK 1024MAK January 2016 Hardware
  • Spectrum +2 No Loading SoundHey all! Just got a +2, immaculate condition, inside AND out, comes up fine when tuned in, keys work, etc. BUT, there is zero sound coming from th…

    Do you have a 'scope?

    It may be hard fault finding without.

    [b][i]Mark[/i][/b]
    1024MAK 1024MAK February 2016 Hardware
  • Spectrum +2 No Loading SoundHey all! Just got a +2, immaculate condition, inside AND out, comes up fine when tuned in, keys work, etc. BUT, there is zero sound coming from th…

    [quote="1024MAK;849823"]Do you have a 'scope?

    It may be hard fault finding without.

    [b][i]Mark[/i][/b][/quote]

    I have no idea what that is i'm afraid.

    So the answer would probably be no lol.
    SimonLCFC SimonLCFC February 2016 Hardware
  • Non working issue 3BGuys Hope you can help me here (or maybe, someonene from Europe could take a look at it? I've already tried different ULA, CPU, ROM and low RAM (…

    ... back in the machine. Good fault finding is a logical process of ...
    1024MAK 1024MAK April 2016 Hardware
  • Non working issue 3BGuys Hope you can help me here (or maybe, someonene from Europe could take a look at it? I've already tried different ULA, CPU, ROM and low RAM (…

    ... the supply voltage. Yes, the fault finding guide and the schematic both ...
    1024MAK 1024MAK April 2016 Hardware
  • 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 …

    Err, fault finding on this board would be a nightmare, due to the manufacturer having sandpapered the IC markings off.

    [b][i]Mark[/i][/b]
    1024MAK 1024MAK May 2016 Hardware
  • Black screen on 48k+Hello peeps Just bought a 48k+ was working fine then after leaving it off over night I turned back on to get a total black screen, no border etc. …

    ... /> The first stage of any fault finding is to test all the ...
    1024MAK 1024MAK May 2016 Hardware
  • 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 …

    ... shown up a "disc loading" fault on Opus Discovery "Freebird"
    fault finding will have to wait for ...
    harriusherbartio harriusherbartio August 2016 Hardware
  • ZX Spectrum 48k issuesHi all! A couple of days ago I bought my first 48k Speccy off ebay (I already own a beautiful QL expanded with QubIDE interface and 640k ram). It was…

    ... can flash it with the fault finding software. In parallel I will ...
    Trantor Trantor January 2017 Hardware
  • Spectrum USB KeyboardI know you can buy these but how do you make one . What I am thinking of be similar to the type described in Issue 1352 of Micro Mart at page 45 .The…

    ... it is good news - the fault is definitely keyboard based and ... did I not notice the fault when I first tested the ... out an expensive PCB!) of fault finding a genuinely nice old keyboard ...
    harriusherbartio harriusherbartio January 2017 Hardware
<1234567…34>

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