World of Spectrum
  • Categories
  • Discussions
  • FAQ
  • Sign In
Home › Search
Title Search
@title beer Word 'beer' in title
User Search
  • @user admin Only posts by Admin
Text Search
  • @body beer Word 'beer' in the text
Phrase Search
"Hello World" Exact phrase match
Exclude Terms
  • car -red Search cars that are not red
"Or" Searches
  • honda | bmw 'honda' or 'bmw' results
Multi-Field
@(title,body) hello Both contain 'hello'
WildCard
  • hond* civ* Match all with an astrix
Combination
  • @title bmw @user admin
See more supported syntax examples
Search Again :: Adv Search 1000 results in 0.010s
<1…15161718192021…34>
  • causes of spectrum buzzing when starting?Hello Do you know if might be a problem that a buzzing sounds sometimes when a spectrum is starting on? thanks

    ... internal power supply that generates -5v, +12v and -12v). There's nothing you ...
    Winston Winston February 2009 Sinclair Miscellaneous
  • Component count/modern replacementsThere is a thread/project for replacing the old memory with simms There is also the ULA replacement. There's DEATH's composite replacement. What els…

    ... be done to remove the 5V line and it's circuitry ... ]

    I thought the 5v line drove most of the ... components! Must be the 12v.
    I would say you ...
    BloodBaz BloodBaz February 2009 Hardware
  • Component count/modern replacementsThere is a thread/project for replacing the old memory with simms There is also the ULA replacement. There's DEATH's composite replacement. What els…

    5v, 12v there's only 7v difference :)

    When components are removed or replaced is there any supporting circuitry that can then also go?
    dekh dekh February 2009 Hardware
  • +2 datacorder noise eliminationHello :-) I have recently bought a gray +2, and as expected, it is plagued with the "datacorder noise in sound output" problem. I have found a few …

    ... causes a drop in the 5V line of the computer and ... stability. I myself use a 12V reed relais which works fine ... even with 5V and which needs a very ...
    ingo ingo March 2009 Hardware
  • 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…

    ... and TR5 the -5V came back, but the 12V are actually 11 ... /> That's good enough as 12V supply :)

    [QUOTE]
    RetroTechie RetroTechie April 2009 Hardware
  • 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…

    ... tests today and indeed, 11.5V is enough, I have a ... with that voltage in the 12V line.

    After finding ...
    Hernán Pablo Álvarez Hernán Pablo Álvarez April 2009 Hardware
  • Using a Spectrum in JapanHi all, at the moment I have a 48k Spectrum on its way (with a LOT of other stuff) to Japan where I intend to use it. So I have some fairly straight…

    ... ac adapter provides the +5V and +12V that the above models need ... . The -12V isn't really necessary, because ...
    zxbruno zxbruno May 2009 Hardware
  • Using a Spectrum in JapanHi all, at the moment I have a 48k Spectrum on its way (with a LOT of other stuff) to Japan where I intend to use it. So I have some fairly straight…

    ... plug because they use +5V @ 2A, +12V @ 700mA, and -12V @ 50mA.

    MagicKnight MagicKnight May 2009 Hardware
  • PSU for + AND +2 for saleHi all. as I live in Canada now, I cannot use either of my UK(240 Volt) power supplies. I'm over in the UK right now, so can post these 2 out to …

    ... connector on the end giving +5V, +12V and -12V supplies).
    trellis trellis May 2009 Sales
  • Transferring +3 Disk Image from PC to real +3Is there a way to do this without physically connecting the +3 disk drive to the PC? Something like a Speccy version of the "Xfer in C" utility for…

    ... floppy adaptor and the power (5v and 12v) reversed.

    Or ...
    Andrew Barker Andrew Barker June 2009 Sinclair Miscellaneous
  • Help - no tv receptionHi I've just bought a 128k Spectrum +2 from ebay & am having trouble getting any output on a tv. The specy seems to work - the power light comes on …

    ... inverter circuit that generates the +12V line inside the machine. The ... PAL encoder chip (TEA2000) requires +12V to operate, resulting in the ... video signal if this is missing. The TV then probably can ... the external power supply provides +12V.
    trellis trellis June 2009 Hardware
  • not much gear and absolutley no ideaIm looking for some help with two spectrums that i have just dug out of storage and are both unfortunatley faulty. I had always regreted that during …

    ... needs three voltages - +5v, -5v and +12v. The -5v and +12v is supplied by the ... internal power supply circuit). If -5v ... is not present when +5v is supplied (this ... good (within about 0.5v of what's listed above ...
    Winston Winston June 2009 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…

    In general "no video but keyclicks" suggests absence of 12V.
    This voltage is generated inside the Spectrum, together with -5V for lower memory. Absence of these voltages might (will) damage lower memory.
    roko roko June 2009 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…

    ... but keyclicks" suggests absence of 12V.
    This voltage is generated ... inside the Spectrum, together with -5V for lower memory. Absence of ...
    nxgshadow nxgshadow June 2009 Hardware
  • Trouble with Spectrum 48kI think it is a Rev 3 (Issue 3 on the motherboard). The screen has weird characters, instead of text, and the keyboard is not responding (although it…

    ... board that provides the -5v and +12v lines to these chips has ...
    Winston Winston July 2009 Hardware
  • Broken ZX Spectrum? :(Hi! I bought a 2nd hand ZX Spectrum half a year ago. It worked perfectly fine when I first tried it. I put it back in its box which it was sent in, …

    ... Spectrum doesn't have +12v or -5v used for video memory and ...
    Jose_Leandro Jose_Leandro July 2009 Hardware
  • Broken ZX Spectrum? :(Hi! I bought a 2nd hand ZX Spectrum half a year ago. It worked perfectly fine when I first tried it. I put it back in its box which it was sent in, …

    ... Spectrum doesn't have +12v or -5v used for video memory and ...
    josteint josteint July 2009 Hardware
  • Broken ZX Spectrum? :(Hi! I bought a 2nd hand ZX Spectrum half a year ago. It worked perfectly fine when I first tried it. I put it back in its box which it was sent in, …

    ... Spectrum doesn't have +12v or -5v used for video memory and ...
    RetroTechie RetroTechie July 2009 Hardware
  • Broken ZX Spectrum? :(Hi! I bought a 2nd hand ZX Spectrum half a year ago. It worked perfectly fine when I first tried it. I put it back in its box which it was sent in, …

    ... do. The Spectrum generates +5V, +12V and -5V from the 9V supply. All ...
    mcleod_ideafix mcleod_ideafix July 2009 Hardware
  • Trouble with Spectrum 48kI think it is a Rev 3 (Issue 3 on the motherboard). The screen has weird characters, instead of text, and the keyboard is not responding (although it…

    ... of the 4116. 5v line was 4.87, 12v line was 10 ... .78, and finally -5v line was ...
    kwyjibo kwyjibo July 2009 Hardware
  • Two dead SpectrumsHi all, Long time since I posted on here. I'm having a bit of a clear-out, and I've re-discovered two Spectrums I had in the loft : One is an orig…

    ... because lower RAM needs -5v supplying before the +12v or +5 supplies ... , and the internal power supply gives the -5v ... video circuits aren't getting 12v. (A failed Z80 would give ...
    Winston Winston August 2009 Hardware
  • ZX Spectrum not working - Please help.Hi there, I am new to this forum and was pointed in this direction by a fellow Youtuber after uploading the following video and then explaining that…

    ... at least measuring key voltages (+5V, +12V and -5V).
    mcleod_ideafix mcleod_ideafix August 2009 Hardware
  • ZXPROJECT update: a replacement for TEA2000Just go to [url]http://www.zxprojects.com[/url]

    ... 12V from 9V supply, but that part of the schematic is missing ...
    mcleod_ideafix mcleod_ideafix August 2009 Hardware
  • ZXPROJECT update: a replacement for TEA2000Just go to [url]http://www.zxprojects.com[/url]

    ... 12V from 9V supply, but that part of the schematic is missing ...
    velesoft velesoft August 2009 Hardware
  • ZXPROJECT update: a replacement for TEA2000Just go to [url]http://www.zxprojects.com[/url]

    ... 12V from 9V supply, but that part of the schematic is missing ...
    Hood Hood August 2009 Hardware
  • Two dead SpectrumsHi all, Long time since I posted on here. I'm having a bit of a clear-out, and I've re-discovered two Spectrums I had in the loft : One is an orig…

    ... pins to expect the +5v, -5v, and +12v supplies to these chips. Then ... of the supplies before the -5v supply means the chip will ...
    Winston Winston August 2009 Hardware
  • Welcomes...and some technical stuffHello I`d like to welcome all ZX Fans. I`m rather ATARI 8bit geek - I got this grat machine when I was 14...20 yeras ago... There were few ZX in …

    ... (easily) derived from 12V or 5V, if you intented to ... might find that the -5V rail is not available. ... ATX1.2 specification, the -5V rail was changed from ... a 7905 to derive -5V from -12V, so you can ... to give -5V to the computer, just 5V and 12V (hence, allowing ...
    mcleod_ideafix mcleod_ideafix August 2009 Hardware
  • Welcomes...and some technical stuffHello I`d like to welcome all ZX Fans. I`m rather ATARI 8bit geek - I got this grat machine when I was 14...20 yeras ago... There were few ZX in …

    ... /> my specyy 48+ needs only 12V and 5V (so far)

    KM1889N needs 12V....anything else ???

    -12V and -5V are used by ...
    lotharek lotharek August 2009 Hardware
  • Spectrum dead: 8 vertical bars in alternating colorsI have been soldering on this basterd for a long time now. All IC's now have sockets (except the LM1889). I swapped all 4116's by types that are 100%…

    ... it switches from 0V to 5V 3.5MHz and the intervals ... ULA is supposed to carry +12V. +12V is perfectly available, as I ... . Hopefully that helps, but the +12V on the ULA is definitely ...
    georgedb georgedb September 2009 Hardware
  • dead issue 6a boardI've just been back to the uk and found my old 48K + there - and bought it back with me to singapore - it's giving white border and red bars. From wh…

    No, I mean the supply circuit inside the Spectrum, a DC-DC transformer that generates 12V and -5V off from the 9V main supply.
    mcleod_ideafix mcleod_ideafix September 2009 Hardware
<1…15161718192021…34>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
  • European Software Titles with an English version
    harriusherbartio on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21
  • +3 Disk drive motor
    AndyC on April 21
  • Celebrity deaths...
    mel the bell on April 20

HitBox

Word Docs Hits
missing 10.6K 11.9K
12v 1.9K 3.2K
5v 3K 4.9K

Related Threads

  • +12v/-12v/9v and peripherals?Do any peripherals use the +12v, -12v or 9v lines exposed at the edge connector?<br /> <br /> Firstly, if they use +9v they won't work on a +3, since…
  • Clever and Smart / Mortadelo y Filemon (missing artist + missing series)[URL="[URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0000987&amp;loadpics=3"]http://www.worldofspectrum.org/pics/pics-both.png[/URL]"]Clever …
  • XAS (missing author, missing v#?)[URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0021750&amp;loadpics=3"]XAS[/URL]<br /> <br /> Co authored by [URL="http://www.worldofspectrum…
  • Paul And The Lost Chalice (missing third part+missing company connection+game+AKAs )[URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0017109&amp;loadpics=3"]Paul And The Lost Chalice[/URL]<br /> <br /> As per the end of part on…
  • Mutant Monty (Middle initial + missing artists + cracked screen + missing company)[URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0003339&amp;loadpics=3"]Mutant Monty[/URL]<br /> <br /> I notice "Softlake Cracking Service" i…
  • Spectrum Missing -5vMy Spectrum is "almost" booting, just when you expect the (C) 1982 Sinclair Research to appear it just displays flashing squares on the screen :(<br …
  • 12V missing on an issue 3I’ve been working on an issue 3 Spectrum +. It shows thin distorted vertical stripes on bootup. +5 and -5V are all right but the 12V line measures ro…
  • zx spectrum +2A power supply missing -12v voltshey.. i'm looing at a zx spectrum +2A power supply that the -12v rail seems to be missing .. it has the 12 volts and 5 volts .. it is the version wit…
  • Missing in action!!!!!!!!!From here, I hope gamers can exchange hard to find files with one another. Personally, I am looking for a TAP or Z80 version of Seymour goes to Holl…
  • Missing 2000AD games (again...)Hello, I've posted this on the MIA/MIS forum previously, but nobody seems to have noticed it, so I offer it here for the perusal of all of you, hopin…

Related Searches

  • fix missing message at init
  • fix missing message
  • fix missing message spectrum 2
  • fix missing message spectrum 128k 2
  • psu faulty 5v
  • psu 5v
  • datacorder 12v
  • toastrack 12v tr
  • toastrack 12v tr4
  • joystick 5v
  • missing 12v
  • missing one of mine at least
  • missing one of mine at least logo
  • missing at least logo
  • 12v
  • missing 5v
  • missing minus 5v
  • 5v missing
  • 12v missing or low
  • spectrum missing 5v

Copyright © 2024 World of Spectrum