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Search Again :: Adv Search 1000 results in 0.009s
<1234567…34>
  • 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 :( I …

    ... seems to be missing it's -5V, the +12V, +5V are ok
    OttO OttO November 2013 Hardware
  • Newbie question about my unwell Spectrum...Hi - I have had a couple of dud 48K Issue 3 Spectrums in the loft for 20 years or more. One would initialise sometimes but could not be guaranteed t…

    ... traced the fault to a missing -5V rail, which has been fixed ... on pin 1 is -4.5V, pin 8 is +12.4V ...
    weathereye weathereye February 2011 Hardware
  • Spectrum+ fault - lines on boot screen, freezesThe ZX Spectrum+ I bought in the car boot has a fault. When you boot it, it's displaying the Copyright screen, but each character position has a vert…

    ... 2 Spectrum (the problem was missing -5V, so I don't think ...
    Muzer Muzer June 2011 Hardware
  • Faulty Issue 1Hi all, thought I'd document my efforts in getting another speccy working. I've never done this before so please bear with me... I recently took a p…

    ... this one off of ebay ("missing power supply - unable to test ... far and surprise surprise my -5V is missing. I replace TR4 and ... second. I measure for the missing -5V and get only -3.3V ... back on and measure -4.5V with a slightly quieter coil ...
    namtip namtip November 2015 Hardware
  • Sinclair 16k Ram pAck Issue3 schematicsHi guys, I am willing to repair a 16k ram pack for the ZX81 but I cannot find any schematic of the ISSUE 3 ram pack. I could only find a schematic…

    ... smoke and therefore I am missing -5V and +12V. I would like ... 8118 ram which requires only +5V. Problem raised when desoldering one ...
    repetto74 repetto74 March 2019 Hardware
  • Issue 2 Speccy faultHi Guys, I'm really hoping someone can help me with a fault that has just developed on my issue 2 speccy. After perservering for some time with usi…

    ... /> 2. If any voltage is missing, stop using it till you ... kill 4116 RAM).

    Missing -5v/+12v to the 4116 usually ...
    Winston Winston December 2010 Hardware
  • Some 48k+ packages for saleSoon! Rwap is sending over a few membranes for 48k+ machines, so far, got two fully functional (and looking good!), soon as the membranes are in the…

    ... still working on finding the missing -5V supply but I have rigged ... up -5V from a battery via a ...
    weathereye weathereye February 2011 Sales
  • Spectrum+ fault - lines on boot screen, freezesThe ZX Spectrum+ I bought in the car boot has a fault. When you boot it, it's displaying the Copyright screen, but each character position has a vert…

    ... 2 Spectrum (the problem was missing -5V, so I don't think ... ]

    I presume the missing -5v is now present...

    5v has been absent with the ...
    Winston Winston June 2011 Hardware
  • Spectrum+ fault - lines on boot screen, freezesThe ZX Spectrum+ I bought in the car boot has a fault. When you boot it, it's displaying the Copyright screen, but each character position has a vert…

    ... =Winston;545722]I presume the missing -5v is now present...

    5v has been absent with the ... /> I mean the lack of -5V was on the Speccy from ...
    Muzer Muzer June 2011 Hardware
  • BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…

    ... ]Measure the resistance between the -5v line and ground.

    5v legs of lower ram chips ... getting 90k ohms at the -5v pin, 1 but would rather ... help it.
    Would the missing -5v be taken away by a ...
    Marshall Marshall January 2012 Hardware
  • BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…

    Just an update on this, Ive managed to restore the missing -5v :)

    But am now given the screem in the first picture (0311):mad:

    [url]http://www.flickr.com/photos/73527395@N05/?saved=1[/url]
    Marshall Marshall January 2012 Hardware
  • 128k Toastrack repair advice needed..Hey all, Just got my second toast rack in a oddball deal when i visited a local farmer for some other second hand stuff. The 128 was sitting in a p…

    ... suspect. Wrong voltages came from missing 5V, at some stage the wire ...
    Asure Asure March 2012 Hardware
  • Revive Spectrum +3 power supply(ies)Hi all, it's me again... [url]http://www.worldofspectrum.org/forums/showthread.php?t=33677[/url] In continuation from last time, I have two original…

    ... I assume you are just missing 5v, and have +12v and -12v ...
    guesser guesser January 2013 Hardware
  • Revive Spectrum +3 power supply(ies)Hi all, it's me again... [url]http://www.worldofspectrum.org/forums/showthread.php?t=33677[/url] In continuation from last time, I have two original…

    ... I assume you are just missing 5v, and have +12v and -12v ...
    Crimbo Crimbo January 2013 Hardware
  • Issue 3 board... How to resurrect?Dear Everyone, Now I have a working 48k Issue 3, a sort of working Speccy+ (still having problems with the keyboard, more of that in another post) a…

    ... PSU, the 5V, -5V and 12 V supplies. A missing -5V for example can ... the root cause of the -5V supply not being correct. My ...
    Pierre Pierre May 2013 Hardware
  • Spectrum Plus display issueHi, does anyone know if this is fixable at all by someone with no experience? From looking on a similar post on World of Spectrum forum they mention…

    ... check will no doubt find missing -5v and +12v at pin 1 ...
    balford balford May 2014 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…

    ... bad (unlikely as it's missing -5V and +12V) you need to ...
    Spirantho Spirantho September 2014 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…

    ... bad (unlikely as it's missing -5V and +12V) you need to ...
    lesoleil70 lesoleil70 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…

    ... longer the chance of a missing -5V supply causing further damage, as ... voltage readings.

    The +5V is produced by the 7805 ... coil is faulty, the -5V supply will be missing (around 0V) or ... supplies to work correctly, the +5V supply must be working.
    1024MAK 1024MAK 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…

    ... I've seen just a missing -5v rail on a Speccy, it ...
    balford balford September 2014 Hardware
  • another non working issue 3 48kHi all, next! :) I don't have good filings about this speccy :) https://youtu.be/D9qpCR18-kI here is short video what this speccy do. we hav…

    ... causes of a low or missing -5V are:-
    Issue 3: C46 ...
    1024MAK 1024MAK July 2015 Hardware
  • Shimmering displayHi all, I've got a 48K issue 4S and it appears to be working apart from it's displaying weird vertical shimmering patterns. It passes a RAM test t…

    ... all that... I spotted a missing 5v line on IC12. Flipped the ...
    Jet5y Jet5y November 2016 Hardware
  • Frying a 48K ZX Spectrum (revision 4A) with 10 V instead of 5 VHello I got a used zx spectrum. When I opened it up, there was no 5 V positive voltage regulator at the 10 V power inlet. Instead what would be in…

    ... are only rated for a 5V supply.... so any could ... can be damaged by a missing -5V supply.

    ...
    So fit a 5V regulator. Next check that you ... have +5V at the correct pins on ... chips need +12V and -5V supplies. The video circuitry ...
    1024MAK 1024MAK April 2017 Hardware
  • 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 :( I …

    Hi, I had the same problem with missing -5V. Faulty C46. Now running very well
    bganhao bganhao June 2020 Hardware
  • 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 :( I …

    For me, the cause of a missing -5V was a faulty D16.
    protek protek July 2020 Hardware
  • Missing in CopyrightSee 'Miscellaneous' forum - Missing in Copyright list...? posted by neffuM. Interesting stuff going on there...

    See 'Miscellaneous' forum - Missing in Copyright list...? posted by neffuM. Interesting stuff going on there...
    Fuzzbucket Fuzzbucket August 2001 Games
  • Missing Your Sinclair issuesHello SpecChums. I'm looking for the following issues of the beloved YS: 20, 27, 28 and 32 Mine are either damaged (sob) or missing (SHRIEK!) It'…

    ... are either damaged (sob) or missing (SHRIEK!)

    It's ...
    hackersanon hackersanon April 2002 Wanted
  • Missing Crash issuesHello SpecChums.. After the success of my Missing YS issues post in this forum, I thought I'd try the same with Crash.. I was bidding for these in E…

    ... /> After the success of my Missing YS issues post in this ... />
    Some of these are missing, some are damaged, so I ...
    hackersanon hackersanon May 2002 Wanted
  • Missing Your Spectrum issuesHello SpecChums.. I'd meant to post this earlier, but forgot all about it. Tch! After the success of my Missing YS and Crash issues post in this f…

    ... /> After the success of my Missing YS and Crash issues post ... />
    Issue 02 (Apr 85) - missing
    Issue 03 (May 85 ... ) - missing
    Issue 08 (Oct 85) - ...
    hackersanon hackersanon May 2002 Wanted
  • something is missing from TZX Vault's AutomonopoliWhile loading, the WOS version of this game (.tap) generates a quite nice red screen with a copyright notice. This version is identical with my ancie…

    ... .
    The red thing is missing from the TZX Vault version ...
    secarica secarica October 2002 MIA/STP/SDP
<1234567…34>

Latest Posts

  • European Software Titles with an English version
    harriusherbartio on 12:06PM
  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on 11:21AM
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on 11:01AM
  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade 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
  • 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

HitBox

Word Docs Hits
missing 10.6K 11.9K
5v 3K 4.9K

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  • 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…
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  • 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 …
  • 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…
  • Missing in CopyrightSee 'Miscellaneous' forum - Missing in Copyright list...? posted by neffuM. Interesting stuff going on there...
  • Missing 2000 AD gamesIn the past years, a handful of Spectrum games featuring 2000 AD characters were released, ranging IMHO from the brilliant (Nemesis the Warlock) to t…
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