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<1…16171819202122…34>
  • 48k spectrum problems at bootHey guys so my 48k Specfy, Issue 3B is having some issues. They're not entirely consistent but the majority of the time (95%) it presents itself as m…

    ... Z-80 is faulty or the upper RAM is faulty. Please help!!
    cmb1100 cmb1100 May 2017 Hardware
  • 48k Speccy with Ram Turbo, Dust Cover and a couple of games!I'm selling one of my Spectrums on Ebay, and along with it a dust cover, a Ram Turbo Interface for cartridges and joysticks and a couple of Codemaste…

    ... it a dust cover, a Ram Turbo Interface for cartridges and ...
    deadpan666 deadpan666 June 2017 Sales
  • Third-party ZX81 RAM packsOne of the things that's previously held me back from fishing for a ZX81 on eBay - other than "will the ULA on this machine sold as 'untested' be com…

    ... getting hold of a 16K RAM pack. Now, even back in ... of the existence of other RAM packs that weren't the ... (at least try to) eliminate RAM pack wobble, but then there ... time it had a working RAM pack I was [i]five ...
    The Mighty Dopethrone The Mighty Dopethrone November 2017 Hardware
  • MGT Sam Coupe BIG JOBLOT!!! 22 Disks, 3 manuals, 1MB Ram Expansion + Midi Cable!Direclty from my personal Sinclair collection that never end... ...MGT Sam Coupe BIG JOBLOT!!! 22 Disks, 3 manuals, 1MB Ram Expansion + Midi Cable…

    Direclty from my personal Sinclair collection that never end...

    ...MGT Sam Coupe BIG JOBLOT!!! 22 Disks, 3 manuals, 1MB Ram Expansion + Midi Cable!

    https://www.ebay.co.uk/itm/173022113295

    Have a nice bid ;)
    ranma_simon ranma_simon December 2017 Sales
  • Testing ram memory of DivIDE / DivMMCHere is new utility for testing DivXXX ram memory: [url="http://velesoft.speccy.cz/zx/divide/software/divramka.zip"]velesoft.speccy.cz/zx/divide/sof…

    Here is new utility for testing DivXXX ram memory:
    [url="http://velesoft.speccy.cz/zx/divide/software/divramka.zip"]velesoft.speccy.cz/zx/divide/software/divramka.zip[/url]
    velesoft velesoft December 2017 Hardware
  • ZX Spectrum Issue 4S composite video fuzzy (horizontal blur)Dear people of WoS, Thank you very much for taking the time to read. I have an Issue 4S I recently acquired and planned to fix up as a gift for a…

    ... Future play ManicMiner
    Test RAM with Brendan Alford's "ZX ...
    I observed the IC and transistor voltages closely resemble ... the ‘working’ IC test voltages show on the ... /> Piggy backed with new IC 14 LM1889N (supplied by retroleum ...
    handsfelloff handsfelloff January 2018 Hardware
  • sam coupe with external 1mb ramvelesofts site has snaper disks: https://velesoft.speccy.cz/sam_zx128.htm when you use masterdos to detect the external 1mb of ram interface th…

    ... detect the external 1mb of ram interface then the snaper emulator ... lets you select the fast ram and the zx spectrum game ... uses this ram above 32768 this gives you ...
    rogerjowett1 rogerjowett1 June 2018 New game ideas
  • Faulty as sprctrumsHi guys I have just received a dk tonics keyboard and to my surprise there is an issue 6 as spectrum inside and an interface 1 yay me but I am ge…

    ... chips (4 logic and 8 ram).
    caver99 caver99 January 2019 Hardware
  • zx microdrive faulty/broken/not working/deadi'm looking for a faulty none working even dead microdrive if anyone has one they would part with

    i'm looking for a faulty none working even dead microdrive if anyone has one they would part with
    caver99 caver99 January 2019 Wanted
  • 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…

    ... willing to repair a 16k ram pack for the ZX81 but ... schematic of the ISSUE 3 ram pack. I could only find ... and replace them with 8118 ram which requires only +5V. Problem ... desoldering one of the 4116 ram, I lifted the tiny little ...
    repetto74 repetto74 March 2019 Hardware
  • Help request for an injured Issue 4A spectrumHi folks, I'm hoping to resurrect an issue 4A spectrum that has been in my hoard for a couple of decades since buying it for spares. Someone ha…

    ... I know), tested and replaced faulty TR4 TR5 and the 9v ... 4 of the 8 lower RAM banks were nackered.

    ram, but not inserted it yet ... require 12v aside from lower ram was the LM1889 - should I ...
    eccles eccles January 2020 Hardware
  • The Complete List Of The Causes Of Lower Ram Failure?Well the aim is to get a comprehensive list.I ask this because I know very little about it . I know that failure of "power supply" related capacitors…

    Well the aim is to get a comprehensive list.I ask this because I know very little about it . I know that failure of "power supply" related capacitors can do this . But I suspect there are loads of other ways to damage lower RAM ICs? Any ideas?
    harriusherbartio harriusherbartio March 2020 Hardware
  • upper ram tacks / TR4 socket...[url="https://photos.app.goo.gl/MkqzRCuNCV3EPr9E7"]https://photos.app.goo.gl/MkqzRCuNCV3EPr9E7[/url] you can only replace that pesky TR4 so many t…

    ... would just fry the lower ram again .. this is one board ... like somebody attacked the upper ram with a black and decker ... sugestions for replacing the upper ram tracks ?
    mark8bit mark8bit September 2020 Hardware
  • zx spectrum display corruption .. with lower ram module installed[img]https://photos.app.goo.gl/Gu6rjC5v21sZxwTX9[/img] [img]https://photos.app.goo.gl/FznVw8SkbbhWn5mh7[/img] another specie question : i have …

    ... video corruption, it has lower ram module fitted.. can get it ... it shows lower ram as good and upper ram not detected although ... start digging at the upper ram, or the 4 logic chips ... that drive the upper ram.. i am presuming that one ...
    mark8bit mark8bit January 2021 Hardware
  • Paging for 64Kb of Video Ram??? What is the best way to page this?Hi all, I'm just putting together a concept card for a "Loki" style of video card, which supports shadow ( so it fits a normal Speccy ) and also t…

    ... single 48K video page with RAM relocated to the ROM space ...
    cj7hawk cj7hawk October 2021 Hardware
  • Spectrum Abuse...Just got some new Spectrums in to repair ( I find it a great way to relieve stress, excepting when I do something daft while fixing them... ) One …

    ... that it had a faulty lower-16 ram chip... Replaced and it ...
    cj7hawk cj7hawk November 2021 Hardware
  • Built a ZX Spectrum that works, but can't get the upper RAM to work?Like the title says I finished my Spectrum 3B board, and it boots, but it doesn't see the upper 32k of RAM. When it boots, the lower 16k works f…

    ... see the upper 32k of RAM.

    When it boots ... programs and even run a RAM diagnostic. Basically, tells me that ... all the associated logic, and RAM chips, with no effect. I ... direct connections between the upper RAM and associated logic, and I ...
    DistantStar001 DistantStar001 June 2022 Hardware
  • Max RAM for ZX Spectrum gamesHow much RAM can be used for single level/whole game? On tape writing.

    How much RAM can be used for single level/whole game?
    On tape writing.
    Tymo6666 Tymo6666 October 2022 Development
  • Whats wrong with my spectrum 48 kWhen i startup, instead of copyright messsage i get gray screen with black square in middle.

    The ULA is making the picture. I'd suspect the ram is faulty.
    Fraser Fraser September 2002 Sinclair Miscellaneous
  • 16k spectrum crash?Hi, I have just been given a spectrum 16k. I plugged it in and it worked, but after turning the machine off and connecting the 32k (cheetah) memory …

    ... is part of the lower ram has packed in - either 4116 ... or 5290 IC's - next most common fault ... this can fail when the ram packs in.
    GP GP February 2003 Sinclair Miscellaneous
  • Faulty Spectrum?PLease can somebody help have just bought a ZX Spectrum 48K And the Hobbit game, i cannot get this game to load it crashes right at the end of the l…

    ... common types of higher memory IC's - in both cases there ... - most often only one is faulty, though I've seen up ...
    GP GP March 2003 Sinclair Miscellaneous
  • Can somebody help me with this?One of my "friends" shoved a piece of metal into the back of my spectrum (48k RAM) and now whenever I try to use it theres nothing but weird lines an…

    ... very unlikely that a blown IC will give you any external ... is on the 8 lower RAM ICs.

    other than ...
    GP GP April 2003 Sinclair Miscellaneous
  • Crasched Spectrum+ 128, HELP!Hi! I recantly bought a Sinclair Spectrum+ 128 on a seconhand store. It shows random colour squares spread over the screen, mostly the upper part a…

    faulty ULAs do not usually manifest ... more like to be a RAM/CPU core fault.

    faulty, the screen border is often ...
    GP GP September 2003 Sinclair Miscellaneous
  • Crasched Spectrum+ 128, HELP!Hi! I recantly bought a Sinclair Spectrum+ 128 on a seconhand store. It shows random colour squares spread over the screen, mostly the upper part a…

    ... there any spec. that those ram's
    need too fullfill ... way of knowing wich ram or rams
    that might be faulty?
    Charles Bigstone Charles Bigstone September 2003 Sinclair Miscellaneous
  • Crasched Spectrum+ 128, HELP!Hi! I recantly bought a Sinclair Spectrum+ 128 on a seconhand store. It shows random colour squares spread over the screen, mostly the upper part a…

    ... /> I'm now desoldering all ram's and will replace them ... of the replacement rams is faulty. Found 16 pcs. at an ...
    Charles Bigstone Charles Bigstone September 2003 Sinclair Miscellaneous
  • Crasched Spectrum+ 128, HELP!Hi! I recantly bought a Sinclair Spectrum+ 128 on a seconhand store. It shows random colour squares spread over the screen, mostly the upper part a…

    ... jury.
    I used a ram of known status as OK ... " hunt for one or more faulty rams. A verry usefull thing ... on to a ram that had
    was faulty. I change about ... years now. Hopefully it has faulty rams too.

    Again ...
    Charles Bigstone Charles Bigstone September 2003 Sinclair Miscellaneous
  • Whats wrong with my spectrum 48 kWhen i startup, instead of copyright messsage i get gray screen with black square in middle.

    ... that are usually ULA related - RAM faults almost always show up ... 's very very rare a faulty ULA will make no 'picture ...
    GP GP November 2003 Sinclair Miscellaneous
  • Whats wrong with my spectrum 48 kWhen i startup, instead of copyright messsage i get gray screen with black square in middle.

    ... that are usually ULA related - RAM faults almost always show up ... 's very very rare a faulty ULA will make no 'picture ...
    Bergman Bergman November 2003 Sinclair Miscellaneous
  • Broken ZX Spectrum + (48k)Hi! I just got a ZX Spectrum + from a friend. He said it was working around 8 years ago when he put it into the cellar. It was in great condition - …

    ... - many people suggested a faulty lower 16k RAM ... and that I should ... check the voltages (since those ram's use 2 different ones ...
    Tom-Cat Tom-Cat December 2003 Sinclair Miscellaneous
<1…16171819202122…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
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    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
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