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Search Again :: Adv Search 866 results in 0.001s
<1234567…29>
  • Issue 3B problemHi! I have an issue 3B board that is having a strange problem: when I got it it didn't had the -5V and +12v, as usual. After replacing TR4 and TR5 t…

    ... />
    I have an issue 3B board that is having a ...
    Hernán Pablo Álvarez Hernán Pablo Álvarez April 2009 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
  • 48 Issue 3b working but very hot ula and cpuSalve to everybody I bought from e*ay an Issue 3b 48k , fitted in a + case. Fixed the keyboard problem with a new keyboard membrane from good Rwap (w…

    ... from e*ay an Issue 3b 48k , fitted in a + case ...
    Cignale Cignale July 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 ...
    guesser guesser September 2010 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 ...
    vinnivee vinnivee April 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, ...
    Asure Asure March 2012 Hardware
  • Issue 3B(S)?Got an Issue 3B rubber in today, all boxed up but a sticker on it that states it was made in Korea, hmm, 4S then I think, till I opened it up. Same …

    Got an Issue 3B rubber in today, all boxed up but a sticker on it that states it was made in Korea, hmm, 4S then I think, till I opened it up. Same colour board as a 4S but its a 3B, first one like this ive ever come across
    Macc Macc July 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…

    ... 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
  • Issue 3B suddenly goes black and whiteAnother 3B I have here had a faulty ULA, swapped that out for another and hurrah! Works! New keyboard membrane and composite mod later I load a game…

    Another 3B I have here had a ...
    Macc Macc February 2014 Hardware
  • 48k + Issue 3B Power SocketHi All, Trying to get a Issue 3b resurrected that had a faulty power socket. The socket has come away from the board and peeled away some of the tra…

    ... /> Trying to get a Issue 3b resurrected that had a faulty ...
    owdeuk owdeuk March 2014 Hardware
  • Tape loading problem with Issue 3BI have an Issue 3B 48k that doesn't seem to want to load any tapes. I have an MP3 player connected to the EAR socket. When I type LOAD "" and start p…

    I have an Issue 3B 48k that doesn't seem ...
    protek protek April 2014 Hardware
  • Issue 3B no soundI just noticed that there's no sound in the Issue 3B Speccy that I've been fixing. Is it more likely that the speaker is bust or is it TR7 and D9? …

    I just noticed that there's no sound in the Issue 3B Speccy that I've been fixing.

    Is it more likely that the speaker is bust or is it TR7 and D9? Or both?
    protek protek July 2014 Hardware
  • 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
  • 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…

    ... Spectrum main boards (Issue Two, 3B and 4A) on Ebay. All ...
    schombi schombi February 2015 Sales
  • 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 odd issue 3 and 3b’s with added components
    Steve(spt) Steve(spt) June 2015 Hardware
  • ULA 1E7 in 3B board?Hi all. Any comments on the following would be appreciated. I have an issue 4a and an issue 3b Spectrum. While having a look around inside the 3b …

    ... issue 4a and an issue 3b Spectrum. While having a ... look around inside the 3b I noticed it contains ... the 7 ULA, whereas the 3b should have E6. So ... the later stages of the 3b manufacturing before making their ... models, and so my 3b may be worth a repair ...
    Jim M Jim M September 2015 Hardware
  • Issue 3B woesHello there, I currently have a Issue 3B for repairs around, it used to have broken upper and lower RAM, which I replaced with 41256-120 DRAMs (hac…

    ... /> I currently have a Issue 3B for repairs around,
    it ...
    Shockwav3 Shockwav3 November 2015 Hardware
  • 48K Issue 3B ROM to EPROM methodsHi folks, While fixing up a completely dead Commodore PET I needed a way of testing the 4116 RAM chips that make up its 32K, some googling found a…

    ... to have such a board (3B that the previous owner had ...
    witchy witchy December 2015 Hardware
  • 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…

    ... 've been donated an issue 3b which has some nice black ...
    Jet5y Jet5y December 2015 Hardware
  • Issue 3B turning offI'm trying to save a Spectrum Issue 3B. I restored the power supply section, changing the 7805, TR4, and TR5, besides all electrolytic capacitors. No…

    ... to save a Spectrum Issue 3B. I restored the power supply ...
    is0eir is0eir March 2016 Hardware
  • help with my original issue 3b from when i was a teen. possible lower ram fault.hello, well ive tried to fix my old speccy, but haven't made much progress. could you help me out with some diagnosis. the fault occurred about…

    ... system I have. with my 3b it didn't seem to ...
    cypher007 cypher007 December 2016 Hardware
  • 16pf Capcitors for C72/C73 issue 3b. Can I use 18pf?Looking at the service manual it states to use a 16pf ceramic disc capacitor in positions C72 and C73 on issue 3b boards. Is this very critical in bo…

    ... C72 and C73 on issue 3b boards. Is this very critical ...
    Your Spec-chum Your Spec-chum September 2021 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…

    ... when compared to my original 3B board that I've been ...
    DistantStar001 DistantStar001 March 2022 Hardware
  • Wanted:Installation Tape/File for Disciple Interface (ZX Spectrum)Need to rescusitate my Disciple Interface. The last time I worked with it - I fitted it with a new chip - that uses DOS version after 3b. That was …

    ... - that uses DOS version after 3b. That was in 1985.
    Felix Goh Felix Goh August 2001 MIA/STP/SDP
  • Yet Another Speccy Quiz (not too hard)OK! I thought I'd chance my arm at one of these things. I must say I've found the recent quizzes WAY too difficult, so I've pitched this one at simpl…

    ... this odd behaviour?

    3b. ...and what instrument does the ...
    Ed Ed August 2002 Games
  • 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+ …

    ... + (the new one is issue 3B) and now the "STOP"-key ...
    Anonymous Anonymous September 2002 Sinclair Miscellaneous
  • Four faulty 48k Rubber Keyed Spectrums for SaleOkay, I've finally dug them out and decided to offer them on here, as when I mentioned them once before some people showed an interest. The circuit …

    ... are:

    6A
    3B
    3A
    2
    MattLamb MattLamb June 2003 Sales
  • 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 ...
    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 …

    ... /> Issue TWO
    3
    3B
    4A
    4B
    mlasham mlasham January 2004 Sinclair Miscellaneous
  • 16-48k memory upgradesince yesterday i am the proud owner again of a spectrum in excellent condition, boxed, etc. it was my first computer back in '82 as well, so it's ni…

    ... to 48k. it's a 3b board which needs Texas Instruments ...
    ruud ruud May 2004 Sinclair Miscellaneous
<1234567…29>

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Related Threads

  • Issue 3B problemHi!<br /> <br /> I have an issue 3B board that is having a strange problem: when I got it it didn't had the -5V and +12v, as usual. After replacing T…
  • 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 …
  • The ZX Spectrum 128 +2b/+3b Service Manualmissing? I just looked in documents and the link didn't work. the ammendment is there though.<br /> <br /> it's weird, in firefox it wouldn't work.. …
  • 48 Issue 3b working but very hot ula and cpuSalve to everybody<br /> I bought from e*ay an Issue 3b 48k , fitted in a + case. Fixed the keyboard problem with a new keyboard membrane from good R…
  • +2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals.<br /> <br /> I am trying to work out what r…
  • 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…
  • 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…
  • Issue 3B(S)?Got an Issue 3B rubber in today, all boxed up but a sticker on it that states it was made in Korea, hmm, 4S then I think, till I opened it up. Same …
  • 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…
  • Issue 3B suddenly goes black and whiteAnother 3B I have here had a faulty ULA, swapped that out for another and hurrah! Works! New keyboard membrane and composite mod later I load a game…

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