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Search Again :: Adv Search 866 results in 0.001s
<1…17181920212223…29>
  • ZX Spectrum 48K Issue 3, loss of -5V rail.Hi all, I've googled this problem and poured over the electrical diagrams for the circuitry concerning the power supplies and I believe I know what …

    ... problem with my 48k issue 3B board and I also have ...
    Renegade Renegade August 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…

    ... ) if a +3 is a +3B?[/QUOTE]

    The easiest ... horribly distorted it's a +3B ... or a +3 with a ...
    chev chev August 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…

    ... I read somewhere that the +3B doesn't do that.
    Track Track August 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…

    ... Spanish +3's are actually +3B's. I have one. The ... not come across a UK +3B.

    [I][B]Mark ...
    1024MAK 1024MAK August 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…

    It sounds like it's both difficult and rare to identify a +3B in the UK then.

    I would be interested to hear if anyone on the forum has a UK version.
    Track Track August 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…

    ... and rare to identify a +3B in the UK then.
    3B specification, and then mount it ...
    chev chev August 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…

    Easiest way to find out, pop the lid and see if you have a Z70835 board, thats the +3B, Z70830 is a +2A or +3A and Z70833 is a +2B (Issue 1 or 2)
    Macc Macc August 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…

    ... external case if its a +3B as it makes looking for ... but I guess the (uk) +3B might be impossible to source!
    Track Track August 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…

    ... external case if its a +3B as it makes looking for ... but I guess the (uk) +3B might be impossible to source ... got issues 1, 2, 3A, 3B, 4A, 4B, 4S, and 6A ...
    chev chev August 2014 Hardware
  • The ULA6C001E-5...Hi everybody, I have been continuing my Quest for the Holy ULA, and have today taken delivery of a ULA6C001E-5. Now, the -6 was used in Issue 3 boar…

    ... between a 3A and a 3B.
    chev chev August 2014 Hardware
  • The ULA6C001E-5...Hi everybody, I have been continuing my Quest for the Holy ULA, and have today taken delivery of a ULA6C001E-5. Now, the -6 was used in Issue 3 boar…

    ... by comparing the 3A and 3B boards.
    chev chev August 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…

    ... the +2, +2A, +2B, +3A, +3B. So that's 17 not ...
    chev chev August 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…

    ... the +2, +2A, +2B, +3A, +3B. So that's 17 not ...
    Track Track August 2014 Hardware
  • ZX Spectrum 48K Issue 3, loss of -5V rail.Hi all, I've googled this problem and poured over the electrical diagrams for the circuitry concerning the power supplies and I believe I know what …

    ... fact you have an issue 3B board.

    The -5V ...
    1024MAK 1024MAK August 2014 Hardware
  • ZX Spectrum 48K Issue 3, loss of -5V rail.Hi all, I've googled this problem and poured over the electrical diagrams for the circuitry concerning the power supplies and I believe I know what …

    If you've got the issue 3B circuit, you should probably check the voltage at each side of R79 instead (assuming the circuit diagram is correct).
    Zorn Zorn August 2014 Hardware
  • ZX Spectrum 48K Issue 3, loss of -5V rail.Hi all, I've googled this problem and poured over the electrical diagrams for the circuitry concerning the power supplies and I believe I know what …

    ... you've got the issue 3B circuit, you should probably check ...
    Renegade Renegade August 2014 Hardware
  • ZX Spectrum 48K Issue 3, loss of -5V rail.Hi all, I've googled this problem and poured over the electrical diagrams for the circuitry concerning the power supplies and I believe I know what …

    Wait a second, my board reads @1983 ISSUE 3B but the schematic matching it belongs to ISSUE 3...:confused:

    So, -5v should be measured after D12, right?
    Renegade Renegade August 2014 Hardware
  • The ULA6C001E-5...Hi everybody, I have been continuing my Quest for the Holy ULA, and have today taken delivery of a ULA6C001E-5. Now, the -6 was used in Issue 3 boar…

    ... ] like my Issue 3 (not 3B) - if I try and load ...
    Spirantho Spirantho August 2014 Hardware
  • The ULA6C001E-5...Hi everybody, I have been continuing my Quest for the Holy ULA, and have today taken delivery of a ULA6C001E-5. Now, the -6 was used in Issue 3 boar…

    ... ] like my Issue 3 (not 3B)... Running my 16K Issue 2 ...
    chev chev August 2014 Hardware
  • Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…

    ... ): D 03-008498
    Issue: 3B
    Z80: NEC D780C-1 ...
    Trafferth Trafferth August 2014 Sinclair Miscellaneous
  • Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…

    ...
    D22-990051 red, Issue 3b board, fitted with Eprom (dual ... )
    D01-254093 green, Issue 3b board
    D01-179241 green ...
    IanJ IanJ August 2014 Sinclair Miscellaneous
  • Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…

    ... with new register I value #3B working on all ZX models ...
    velesoft velesoft August 2014 Games
  • Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…

    ... with new register I value #3B working on all ZX models ...
    Alessandro Grussu Alessandro Grussu August 2014 Games
  • '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…

    ... be tested in an issue 3B but may exhibit memory access ...
    balford balford September 2014 Hardware
  • '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…

    ... be tested in an issue 3B but may exhibit memory access ...
    HZJ HZJ September 2014 Hardware
  • Video fault on issue two ZX boardI've trawled the Internet and drawn a few blanks as to where to look to resolve the fault with my issue two board. I'm hoping a few of you knowledgea…

    I doubt it's the LM1889 itself, if you remove it from an otherwise healthy board you'll just get a B&W picture.

    I'm guessing the ULA is soldered in also, otherwise you could try swapping that part from the issue 3B.

    B
    balford balford September 2014 Hardware
  • Video fault on issue two ZX boardI've trawled the Internet and drawn a few blanks as to where to look to resolve the fault with my issue two board. I'm hoping a few of you knowledgea…

    ... that part from the issue 3B.

    B[/QUOTE]
    Wiggs Wiggs September 2014 Hardware
  • Post Composite mod video not bright enough - FIXHiall, I have a few Spectrums and decided to modify them all with the composite video mod, i.e. redirect the feed to the modulator direct to the out…

    ... your Issue 4S is - your 3B might be too.

    3B Samsung. I put in a ...
    Spirantho Spirantho September 2014 Hardware
  • Post Composite mod video not bright enough - FIXHiall, I have a few Spectrums and decided to modify them all with the composite video mod, i.e. redirect the feed to the modulator direct to the out…

    ... your Issue 4S is - your 3B might be too.

    3B Samsung. I put in a ... a Samsung (C945's), the 3b isn't (ZTX313's).
    IanJ IanJ September 2014 Hardware
  • Video fault on issue two ZX boardI've trawled the Internet and drawn a few blanks as to where to look to resolve the fault with my issue two board. I'm hoping a few of you knowledgea…

    ... for nostalgia.

    My 3B 48k will be getting a ...
    Wiggs Wiggs September 2014 Hardware
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