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Search Again :: Adv Search 1000 results in 0.024s
<1234567…34>
  • How to tell a Spectrum +3BAnyone know if there's a way to tell externally (from the case) if a +3 is a +3B? I know about the typing 'Spectrum' once in basic. How rare are th…

    Anyone know if there's a way to tell externally (from the case) if a +3 is a +3B?

    I know about the typing 'Spectrum' once in basic.

    How rare are these Speccys, I know they came later on but anyone know how many were produced?
    Track Track August 2014 Hardware
  • Building a ZX Spectrum 3B, Looking for PartsAs the title says, I'm attempting to build a new ZX Spectrum, but I'm having some trouble locating all of the parts. Thus far, I've got all of t…

    ... to build a new ZX Spectrum, but I'm having some ... that informative. It just says "SPECTRUM". I mean... Yeah. But, could ... , as I have another original Spectrum that isn't booting (Black ... when compared to my original 3B board that I've been ...
    DistantStar001 DistantStar001 March 2022 Hardware
  • Is the +3b a myth or just rare?I have a few speccies, one of them being a +3 with terrible sound (terrible that is, until I did a minor mod to replace some resistors, now the sound…

    ... on the interweb about a Spectrum +3b which was made in China ... (and from my understanding, not +3b's). I have never seen ... a +3b or a picture of one ... , or does a non distorted +3b made in China actually exist ...
    jagman5994 jagman5994 January 2014 Hardware
  • 48k spectrum pausing the clockI had a spectrum 3b motherboard donated to me with no case. So i have decided to put it in a custom case with built in kempston port etc. I also …

    I had a spectrum 3b motherboard donated to me with ...
    gazj82 gazj82 September 2020 Hardware
  • Built a ZX Spectrum that works, but can't get the upper RAM to work?Like the title says I finished my Spectrum 3B board, and it boots, but it doesn't see the upper 32k of RAM. When it boots, the lower 16k works f…

    ... title says I finished my Spectrum 3B board, and it boots, but ... get .6 volts on my Spectrum+ with a 6A board.
    Spectrum+. Then again, I don't ... with "done", same as my Spectrum +


    Anyway this ...
    DistantStar001 DistantStar001 June 2022 Hardware
  • Black screen of deathI recently aquired a zx spectrum (revision 3b) of the rubber key variety. it was all running smoothly(for about an hour after pluggin in), i left the…

    I recently aquired a zx spectrum (revision 3b) of the rubber key ... lack of video output the spectrum is behaving normaly. keyboard ...

    Ive noticed other Spectrum 3b users with this problem yet ... to have acess to another spectrum to attempt to replace ...
    nxgshadow nxgshadow June 2009 Hardware
  • Zx Spectrum 3b schematicHi,<br><br>I'm trying to get the above schematic from the 'Documentation'&nbsp; but it keeps asking for a login/password. It does not accept my login…

    Hi,

    I'm trying to get the above schematic from the 'Documentation'  but it keeps asking for a login/password. It does not accept my login/password even tho' I'm already logged into the forums.

    I don't remember having to do a ...
    DenisM DenisM June 2015 Hardware
  • Spectrumpedia revised and extended edition. Suggestions about possible new contentFor the 40th anniversary of the first launch of the Spectrum, I am going to revise the Spectrumpedia. Feedback was very positive, although the fact t…

    ... website and public archives like Spectrum Computing.

    ... />
    [i]Non-Spectrum specific hardware emulation[/i]
    Spectrum +3B and of the Saudi ... , Alessandro, [i]Al's Spectrum Annual 2019,[/i] digital publication ...
    Alessandro Grussu Alessandro Grussu October 2021 Sinclair Miscellaneous
  • ZX Spectrum +2A and +2B - finding the true factsI'm confused. Some told me that a +2A has a +3 board, and the +2B got the simplified board. But I think that is not true. I have had over a dozen b…

    ... in the +2B/+3B Amendment Service Manual titled "Spectrum +3B Floppy Disk Interface ...
    guesser guesser December 2013 Hardware
  • Is the +3b a myth or just rare?I have a few speccies, one of them being a +3 with terrible sound (terrible that is, until I did a minor mod to replace some resistors, now the sound…

    ... on the interweb about a Spectrum +3b which was made in China ... (and from my understanding, not +3b's). I have never seen ... a +3b or a picture of one ... it is a +3 or +3B motherboard.

    Someone else ...
    guesser guesser January 2014 Hardware
  • ZX Spectrum keyboards : all and everything about them and how can the Speccy keyboard be improved? This discussion can include of all the main types of Spectrum keyboard from the past (inc addon / aftermarket) , their strengths and weaknesses , …

    ... upgrades)
    [*]ZX Spectrum 48k (rubber key) ( ... )
    [*]ZX Spectrum+
    [*]ZX Spectrum 128k (waiting for ... Spectrum+2 (grey)
    [*]ZX Spectrum+2B
    [*]ZX Spectrum+3
    [*]ZX Spectrum+3B ... Amstrad made ZX Spectrum machines fall into the ...
    1024MAK 1024MAK November 2017 Hardware
  • ZX Spectrum 48k issue 3b power problem?Hi :) I was lucky enough to find a couple of ZX Spectrums at a car boot sale yesterday. I spent the evening fiddling about with one (issue 2) and t…

    ... /> The second is an issue 3b. I am willing to fiddle ... when I turn on this spectrum, the copyright screen comes on ...
    vinnivee vinnivee April 2011 Hardware
  • Three Spectrum main boards (Issue Two, 3B and 4A)I will be offering three partially tested Spectrum main boards (Issue Two, 3B and 4A) on Ebay. All boot to the Sinclair (C) message. All fully popula…

    ... three partially tested Spectrum main boards (Issue Two, 3B and 4A) on ...
    schombi schombi February 2015 Sales
  • Spectrum+ keyboard problemHello all! I was wondering if someone here could give me some hints with my Speccy+. The problem is that I replaced the motherboard of my Spectrum+ …

    ... motherboard of my Spectrum+ (the new one is issue 3B) and now ...
    Anonymous Anonymous September 2002 Sinclair Miscellaneous
  • Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…

    ... . Have "preshifted" sprites.

    3b. AND + OR from preshifted sprites ... first sprite-drawing routine for spectrum, so being pointed to the ...
    windenNTW windenNTW July 2003 Games
  • Spectrum board Issue numbersWhilst cataloging my spectrums I am documenting the issue numbers of the motherboards. so far I have (all spectrum or smegtrum + Issue TWO 3 3B …

    ... /> so far I have (all spectrum or smegtrum +

    Issue ... TWO
    3
    3B
    4A
    4B
    mlasham mlasham January 2004 Sinclair Miscellaneous
  • Spectrum Issues by Serial?Wotcher all, Just wondering, as I gaze idly at my newly bought off eBay Spectrum+... is there any way of telling from the serial number what issue a…

    ... my newly bought off eBay Spectrum+... is there any way of ... the 2, the 3, the 3B and the 6A (probably). Why ...
    Spirantho Spirantho May 2005 Sinclair Miscellaneous
  • Dead Spectrum +Hi all, I've recently dug out my old Spectrum + with the idea of repairing it. When I last looked at it, when I was much younger, I was soldering a …

    ... recently dug out my old Spectrum + with the idea of repairing ... extensions. It is a revision 3B board. I've a bit ...
    owdeuk owdeuk March 2007 Hardware
  • sinclair zx spectrum issue 6a (again) - how to repairHi All, Is there someone who may explain what these jumpers can be used for. [url]http://forest.no-ip.org/repair/jumpers.gif[/url] <- this is from …

    Hi All,
    Is there someone who may explain what these jumpers can be used for.
    [url]http://forest.no-ip.org/repair/jumpers.gif[/url]
    gorski gorski February 2008 Hardware
  • Is it possible to use external power supply for +-12; +-5 for ZX SpectrumRecently I acquired a damaged Sinclair ZX Spectrum, issue 3B. According to the maintenance manual I have to replace TR4 and TR5. These type of transi…

    ... acquired a damaged Sinclair ZX Spectrum, issue 3B.
    According to the ... enough? Somebody has repaired the spectrum before I acquired it, and ...
    65C02 65C02 June 2008 Hardware
  • ZX Spectrum +2b and +3b modelsI've been wondering for quite a while what the +2b and +3b were all about, as neither appear in the FAQ, but we have a service manual in the archive …

    ... while what the +2b and +3b were all about, as neither ...
    mheide mheide October 2009 Emulators
  • Help with broken SpectrumHi There, Just received a ZX Spectrum computer. It's an issue 3B (48k version). When I power it up (9V centre pin -V) nothing happens. It's complete…

    ... received a ZX Spectrum computer. It's an issue 3B (48k version ...
    Oldskool Oldskool September 2010 Hardware
  • +2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals. I am trying to work out what really exists…

    ... , as found in the "+2B/+3B" diagram of the +3 amendment ... .


    6) My spectrum +3 (sn: U112922) was manufactured ...
    guesser guesser September 2010 Hardware
  • Dead Spectrum SocietySo I'm getting back into real Sinclair computers rather than emulators. During the summer months I was lucky enough to buy a working ZX81 and was giv…

    ... delivery of a 48K rubber Spectrum. Now I've not used ... /> BTW It's an Issue 3B motherboard, looks quite tidy and ...
    absinthe_boy absinthe_boy October 2011 Hardware
  • Spectrum +3, Issue 2...I have just had plonked on my desk a nice issue 2 Spectrum +3. I'm not sure if its 100% working yet, as I have not plumbed it into a telly. So, assu…

    ... desk a nice issue 2 Spectrum +3. I'm not sure ... ? I have read that the "3b" is fine, is this the ...
    Chinners Chinners December 2011 Hardware
  • Issue 3B only sees 16k (and RAMTOP NO GOOD on loading)A ZX+ with issue 3B board that i got recently, does not see anything more than 32768 (sometimes 37267..) on "PRINT PEEK 23732 + PEEK 23733 * 256 (Ent…

    A ZX+ with issue 3B board that i got recently, ... the composite mod on this spectrum, and the signal is a ...
    Asure Asure March 2012 Hardware
  • Spectrum 48K - upper memory problemsHi I have a ZX Spectrum 48K issue 3B which does not see upper memory. On PRINT PEEK 23732+256*PEEK 23733 i got result 32767. POKE 32768,85 and PRINT …

    ... /> I have a ZX Spectrum 48K issue 3B which does not see ...
    Edward Edward May 2012 Hardware
  • ZX Spectrum 48k - no CLK signalHello I'm trying to repair ZX Spectrum 48 mainboard issue 3B. When i check signal with oscilloscope on X1 or on ULA pin 39. I get stable 2V no clock…

    ... trying to repair ZX Spectrum 48 mainboard issue 3B.
    When i ...
    gottrek gottrek November 2013 Hardware
  • ZX Spectrum and add-on temperaturesImre Jakli from Hungary sent me some interesting pictures which I think are worth to share. These are about temperatures he measured with a modern to…

    ... jpg[/IMG]

    ZX Spectrum issue two temperature from the ... .nl/hobby/vanmezelf/Spectrum+_ISSUE3B_switching_regulator.jpg[/IMG]

    3B new temperature ... :

    [IMG]http://benophetinternet.nl/hobby/vanmezelf/Spectrum ...
    bverstee bverstee December 2013 Hardware
  • ZX Spectrum +2A and +2B - finding the true factsI'm confused. Some told me that a +2A has a +3 board, and the +2B got the simplified board. But I think that is not true. I have had over a dozen b…

    ... ]

    [QUOTE]Sinclair ZX Spectrum+2B 128K
    After some ... are now labeled +2B and +3B on the bottom side.[/QUOTE ...
    bverstee bverstee December 2013 Hardware
<1234567…34>

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