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Search Again :: Adv Search 1000 results in 0.019s
<1234567…34>
  • Where to get Spectrum RAMSigh. Even obsolete nixie tubes seem to be easier to get hold of than Spectrum RAM. I've tried the usual suspects (eBay and google searches), but not…

    ... get hold of than Spectrum RAM. I've tried the usual ... two dead Spectrums with suspected bad RAM. It'd be nice to ...
    Winston Winston November 2006 Hardware
  • Bah, Spectrum+ has diedBah. My Spectrum+ appears to have died. On power up, the 'paper' part of the screen goes black (and you see the faint red lines that you normally se…

    ... , the Spectrum overwrites all of RAM on boot - bad RAM perhaps?
    Winston Winston July 2006 Hardware
  • Keyboards - thanks to rwap!I've just completed repairing a rubber Speccy that I have (bad RAM and bad keyboard membrane). I ordered a new membrane off rwap just before I left H…

    ... rubber Speccy that I have (bad RAM and bad keyboard membrane). I ordered ... it's not just a bad solder joint, is there a ...
    Winston Winston February 2007 Hardware
  • Faulty Spectrum (help requested)I have an issue 6a specci. It's Z80 has the fault m1 line problem (Multiface 128 does not work). So I decided to put in a new Z80 but unfortunately i…

    ... /> To me it loks like bad RAM. But the Spectrum worked before ... need to unsolder all the RAM ICs which is much more ...
    UTom71 UTom71 February 2008 Hardware
  • TESTROM3 - utility/rom for test your ZXHere is TESTROM3 utility as 16kB ROM file + flasher for install this rom to divide eeprom (or mapram mode). Work also on ZX Spectrum without ROM and …

    ... =black).
    If detect bad ram then show small multicolor lines ... bold line sign number of bad page). After sign error cintinue ... menu.

    TEST FAST RAM
    =============
    Test only ... test again.
    If bad memory tested then show multicolor ...
    velesoft velesoft August 2012 Sinclair Miscellaneous
  • Help me resurrecting a 128KHello to everybody. I'm really struggling along a repair of a standard 128K a friend of mine handed me over some (ok, actually a lot of) time ago. A…

    ... I usually translate into a bad RAM chip. I've already changed ... the whole contended RAM bank, the Z80, ROM and ... changing also the whole uncontended RAM bank?
    Falco-F8L Falco-F8L October 2012 Hardware
  • Interface1bis and alternate roms?I was wondering if it's possible to put alternate ROMs on the Interface1bis? I'd like to try using the Gosh Wonderful ROM without having to make any …

    ... if I can load a RAM test ROM somehow. I'm ... if my +2 might have bad RAM since I'm having problems ...
    FozzTexx FozzTexx September 2014 Hardware
  • Spectrum +2 various problemsHey there, I just recently acquired a Spectrum +2 and it's got various problems with it. First off, I get a rolling picture through both RGB and comp…

    ... looks like I've got bad RAM and I may have a ... bad ULA on my hands as ... well. Would a bad ULA cause a rolling picture ...
    ApolloBoy ApolloBoy October 2016 Hardware
  • Someone repairing ZX Spectrum in The Netherlands?Last december I bought a Spectrum 48k of an online marketplace. This week a new powersupply arrived (did not dare to try the old one) and a divMMC de…

    ... possible reasons:

    - bad ram
    - a bad z80 with a broken ...
    muppets4 muppets4 January 2020 Hardware
  • Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …

    ... doesn't have any dead RAM in the top 32K. All ... . If a 48K Spectrum has bad RAM, though, it'll think it ...
    Spirantho Spirantho June 2005 Sinclair Miscellaneous
  • Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …

    [quote]
    On 2005-06-06 17:33, Spirantho wrote:


    If a 48K Spectrum has bad RAM, though, it'll think it's a 16K Speccy.


    [/quote]

    wonder if thatll happen to us lot if we get alzimers
    mel the bell mel the bell June 2005 Sinclair Miscellaneous
  • Replacing +2/+3 rom with eeprom?Hi I want to change my +2a to +3e (or +2e). Garry mentions that 27C256 eprom can be used. I would like to use 28C256 instead. Pins are not all the s…

    ... piggybag technique to identify the bad RAM or just replace all of ...
    Timppa Timppa September 2005 Sinclair Miscellaneous
  • Faulty 128Need some help here. I've got a 128+ that won't boot to the menu. It just displays a load of rubbish on the screen. Here's an example of what it does…

    Probably bad RAM/Z80 but maybe a fried ULA, possibly a whole jost of other possibilities.

    You need the help of: (que superhero music) Spirantho. He's about the best guy to ask on here.
    DEATH DEATH November 2005 Hardware
  • Faulty 128Need some help here. I've got a 128+ that won't boot to the menu. It just displays a load of rubbish on the screen. Here's an example of what it does…

    You could enter that picture for next years turner prize. With the 25000 quid you could buy a load of 128+'s

    Seriously though it looks like bad ram or a fried ula to me.
    BruceNorton BruceNorton December 2005 Hardware
  • Bah, Spectrum+ has diedBah. My Spectrum+ appears to have died. On power up, the 'paper' part of the screen goes black (and you see the faint red lines that you normally se…

    ... Spectrum overwrites all of RAM on boot - bad RAM >perhaps?[/QUOTE]
    RAM.

    A probe you ... then spectrum has a upper ram fault.

    Bye
    Jose_Leandro Jose_Leandro July 2006 Hardware
  • RAM chips are 4164s and 4564s interchangeableI paid for some 4164s online, for upgrading my Spectrum 16K to 48K, and I've been given 4564s. I've tried these along with the correct logic ICs and …

    ... swopping the position of the RAM ICs. That is to ... say, take out all the RAM chips, and put them ... 65368, you may still have bad RAM. The ROM routine to check ... 't test every bit of RAM, just every address. If ... your RAM is only dodgy at (say ...
    DEATH DEATH September 2006 Hardware
  • How rubbish is thatIt was perhaps last year when I bought a new power supply, as the old one at something like 250W was getting a bit shaky. Then, recently, my computer…

    ... , I would suspect the RAM also. Bad RAM symptoms include thinking you have ...
    DEATH DEATH October 2006 Chit chat
  • Spectrum RAM Paks...This jogged my memory (excuse the pun!!) : [url]http://cgi.ebay.co.uk/CURRAH-32K-RAM-PACK-BOXED-SINCLAIR-ZX-SPECTRUM_W0QQitemZ150057889352QQihZ005QQ…

    ... . Anything else and you have bad RAM.
    DEATH DEATH November 2006 Sinclair Miscellaneous
  • Spectrum RAM Paks...This jogged my memory (excuse the pun!!) : [url]http://cgi.ebay.co.uk/CURRAH-32K-RAM-PACK-BOXED-SINCLAIR-ZX-SPECTRUM_W0QQitemZ150057889352QQihZ005QQ…

    ... . Anything else and you have bad RAM.[/QUOTE]


    Thank ...
    itsallgood itsallgood November 2006 Sinclair Miscellaneous
  • HELP BTTF on Speccy 48khello, fellow spectrum owners! I have won a Back To the future game on cassette of eBay that is for my 48k. I run it, by typing LOAD "", and it sta…

    ... . Anything else and you have bad RAM.

    (pinched from another ...
    Sard Sard November 2006 Games
  • Dead Spectrum diagnosis and desolderingI have two dead Spectrums - one I'm pretty sure is caused by bad memory, and the other - well, perhaps a bad ROM, perhaps a bad CPU (it gets halfway …

    ... that show up, true - but bad RAM, dodgy Z80, dodgy ROM etc ... replacement capacitors to cure the bad picture problem they had.
    DEATH DEATH November 2006 Hardware
  • Dead Spectrum diagnosis and desolderingI have two dead Spectrums - one I'm pretty sure is caused by bad memory, and the other - well, perhaps a bad ROM, perhaps a bad CPU (it gets halfway …

    ... again. It's not so bad for a memory chip, but ... , it depends on some display RAM working. It's very clever ... , as if you have some bad RAM, it'll show which chips ... a very nice little replacement RAM also, available on the same ...
    DEATH DEATH December 2006 Hardware
  • Prince of Persia in an actual Spectrum?Prince of Persia is one the best games programmed for our Speccy in the last 10 years, but I think originally was written for TR Dos, although there …

    ... - $5C00 with $FF (causing some bad RAM paging)...

    I tried ...
    Jmk Jmk December 2006 Games
  • Prince of Persia in an actual Spectrum?Prince of Persia is one the best games programmed for our Speccy in the last 10 years, but I think originally was written for TR Dos, although there …

    ... - $5C00 with $FF (causing some bad RAM paging)...

    I tried ...
    Ivanzx Ivanzx December 2006 Games
  • Best replacement for ZTX650?What is the best replacement transistor for the obsolete ZTX650? I've read that TIP31 will do the trick. Is there a decent equivalent from the BC or …

    ... .
    In addition to the RAM, also check:
    TR5 (check ... .
    I hope its the RAM because if its not it ... it is rather unusual for bad RAM to cause such a symptom ...
    gtsamour gtsamour January 2007 Hardware
  • Problem with Spec 128k +2 !! Noob calling for help!Hi there, I have an spec 128k +2 which was working fine, played with him yesterday and today when i tried him again he gave me this [URL="http://go…

    ... limited experience of repairing Spectrums, bad RAM seems to be a common ...
    Winston Winston February 2007 Hardware
  • Feel my pain......or sit back and laugh yourself sick. Recently upgraded to XP Pro. Getting intermittent crashes/reboots - nothing in event manager. OK reinstall …

    ... found the problem to be bad RAM. Replaced my 256M strip ... Hell? Hell ain't a bad place, according to Iron ... wasn't until the RAM change that things went ... fussy or anything. That bad RAM really was hard to track ... down, as several RAM test programs I had ...
    DEATH DEATH March 2007 Chit chat
  • Feel my pain......or sit back and laugh yourself sick. Recently upgraded to XP Pro. Getting intermittent crashes/reboots - nothing in event manager. OK reinstall …

    ... the problem to be bad RAM. Replaced my 256M strip ... thread. I switched the RAM and it works ok ... -Video drivers
    -Faulty RAM
    -Other driver issue
    RAM, Pagefile or BIOS error ... , try changing the RAM, hopefully it'll work.
    FRGT/10 FRGT/10 March 2007 Chit chat
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... s as if there is bad lower RAM or TR3, ZTX313 is ... down. The RAM is working fine, and the ... computer can see all the RAM above 32768 - it just ... in every location in upper RAM - so it's half ... not bad RAM, it's not bad ROM, it's not a bad Z80 ...
    DEATH DEATH March 2007 Hardware
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... intensively write to all of RAM in a machine code program ... crash, or alternately, get bad values from RAM?

    I've ... odd ways that indicated bad disks or bad RAM, but turned out to ...
    Winston Winston March 2007 Hardware
<1234567…34>

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