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  • 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 - …

    Yeah, it could be anything ULA, ROM, RAM...or a combination of them.
    It took me 8 months of tinkering with my 128k+ to find that it was a faulty AY sound chip. Thanks to Gary who had a spare AY chip :)

    t
    thomas3120 thomas3120 December 2003 Sinclair Miscellaneous
  • OopsToday is a sad day :confused: Poor old rubber keys has gone t**s up. :( All i get is a black screen with a white border. Any body got any ideas …

    ... supply, faulty 4116 RAM (lower 16k), faulty ULA, faulty upper RAM (4532 32k) and faulty CPU ... change is most likely a faulty ULA.

    don't ...
    GP GP March 2004 Sinclair Miscellaneous
  • Any Errors?Any errors you feel Sinclair Research or even Amstrad made with the speccy??

    ... page any of the 16k RAM pages in any location - 0000h ... ]does anyone know how much RAM cost back in "the good ... recall correctly Sinclair actually used faulty 32K RAM chips with only 16K ... the Spectrum?[/quote]

    RAM, Z80 and ULA have got ...
    cyborg cyborg March 2004 Sinclair Miscellaneous
  • Ecstasy & AgonyWhile checking out the area around Chennai Central station on Sunday, I came across this crowded narrow road taken up entirely by roadside vendors se…

    ... -5v supply to the 4116 IC's - a rule of thumb ... is blown - but sometimes a faulty 4116 can cause this and ... get a known good 4116 IC and piggy back it on ... there you've found the faulty IC and just need to replace ...
    GP GP March 2004 Sinclair Miscellaneous
  • new release of winTZXHi all I released winTZX 0.4drc1 (04/02/2005) + Added CSW file support + Added block selection (replay and save) + Added reverse output + Added direc…

    CSW Viewer does use compressed files.

    The ram chips in 48K Spectrums are faulty ones with 50% working that is used. If you take one from another Spectrum it might need different wiring.
    Fraser Fraser January 2005 Emulators
  • Spectum 16kHi Is it possible to play a 48k spectrum game on a 16k spectrum, if not is there anything i can purchase to boost up the computer to play the game?

    ... but I thought they used faulty 32K ram chips in order to ... utlising the fact that although faulty 16k still worked fine. So ... probably be more like 2 faulty 32K ram chips.

    Either ...
    cyborg cyborg April 2005 Games
  • Probs with PC can anyone help ???I'm having problems with my computer so have to write this email at work. My machine at home is giving me real problems and I wondered if anyone can …

    ... do this at startup Check RAM. Might be called something else ... and you will see the RAM counting up to however much ... ... might tell you if your RAM is faulty.

    Skarpo
    Skarpo Skarpo May 2005 Chit chat
  • ZX-81 Ram Pack problemHi! I know this is a ZX Spectrum forum, but I am hoping someone here might be able to help me out... I have posted this to c.s.s. but noone was able…

    ... that your memorypack has some faulty chips in them (as you ... ROM?

    POKE all RAM with a VALUE 1,
    faulty memory.
    Dr BEEP Dr BEEP September 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 …

    ... look like just one ram chip is faulty, but like random problems ...
    Tom-Cat Tom-Cat September 2005 Sinclair Miscellaneous
  • OT: PC boot solution anyone?A long shot I know, but what the hell! The thing is this: My Asus K8V SE Deluxe mobo seems to be suffering from a problem. Specifically with the BIO…

    ... /> Also, are there any IC's in IC-holders? If so, you ... MB's dont usually have IC-holders, but rather SMD versions ... incl. down to the last RAM block but am sure you ...
    Hedegaard Hedegaard October 2005 Chit chat
  • How many Speccy's Did U Own?Hey guys, just wondering how many Spectrum's you lot owned???? I had 3....I used to smash them up when I got pissed off on a game...Seriously....tha…

    ... a lot of these are faulty, or are so far in ... GHz, 280 GB HD, 256Mb RAM
    1 PACKARD BELL P133 ...
    chaosmongers chaosmongers November 2005 Sinclair Miscellaneous
  • How many Speccy's Did U Own?Hey guys, just wondering how many Spectrum's you lot owned???? I had 3....I used to smash them up when I got pissed off on a game...Seriously....tha…

    ... a lot of these are faulty, or are so far in ... GHz, 280 GB HD, 256Mb RAM
    1 PACKARD BELL P133 ...
    mel the bell mel the bell November 2005 Sinclair Miscellaneous
  • How many Speccy's Did U Own?Hey guys, just wondering how many Spectrum's you lot owned???? I had 3....I used to smash them up when I got pissed off on a game...Seriously....tha…

    ... a lot of these are faulty, or are so far in ... GHz, 280 GB HD, 256Mb RAM
    1 PACKARD BELL P133 ...
    zeropolis79 zeropolis79 November 2005 Sinclair Miscellaneous
  • What happens during a reset?I always used to wonder about this, but only thought a bit more about it last night when noticing after all these years what actually happens. Obvio…

    ... on the ZX80 where RAM was filled with '1 ... not set, then the RAM was assumed faulty (or absent).
    ... first decrement it was faulty. If it was not ... the second decrement it was faulty.

    The ... Sinclair used cheap rejected RAM chips in early machines ...
    Geoff Geoff February 2006 Sinclair Miscellaneous
  • What happens during a reset?I always used to wonder about this, but only thought a bit more about it last night when noticing after all these years what actually happens. Obvio…

    ... /> Not quite.

    The faulty chips Sinclair used were suppost ... , because part of them were faulty, they were used as 32k ... up the upper 32k of RAM in a 48k speccy. There ...
    MikeW MikeW February 2006 Sinclair Miscellaneous
  • Kempston mouse inverted axels?Hi I have a problem with my Kempston mouse :???: X and Y axels are inverted (and I'm using mouse right way!), ie. if I move mouse left, cursor moves…

    ... schemantics can answer if a faulty IC (inside interface) can cause this ...
    Timppa Timppa April 2006 Hardware
  • Broken SpectrumJust found out that both of my +3s have died. :( Seems to be the same problem with both, that the disk-drive just doesn't want to spin anymore. An…

    ... crashing 128 - could be a faulty Z80 but is more likely ... doesn'y mean that the RAM is OK. It can be ... - should be 65368, if not, RAM is buggered.

    What ...
    DEATH DEATH April 2006 Sinclair Miscellaneous
  • What is it exactly about that Spectrum that you like so much?I'm sure that most people here will agree that there's something very special about the Speccy, thats why we visit WOS afterall... But what why has i…

    ... which when activated, simulated logic IC gates. It had (I think ... so ago for it's RAM chips.

    None of ...
    DEATH DEATH May 2006 Games
  • Note to SpiranthoIan Whilst playing about with Frankenspec, I have discovered that the 41256 memory IC works as well as a 4164 (etc) in the upper RAM block of a 48K …

    ... discovered that the 41256 memory IC works as well as a ... 4164 (etc) in the upper RAM block of a 48K machine ...
    DEATH DEATH May 2006 Hardware
  • EightyOne and CF cardsInspired by obo & piters discussion regarding imaging of flash card, I've added reading/writing to real disks to EightyOne. Hopefully it should allo…

    ... (IBM T20, P3-700, 384MB RAM, Win98SE) and it ran too ... my Win/DirectX setup is faulty.
    ewgf ewgf June 2006 Emulators
  • 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 ... was a chip of upper RAM.

    A probe you ... 2 it was IC26 and IC 27 chips).With this probe ... then spectrum has a upper ram fault.

    Bye
    Jose_Leandro Jose_Leandro July 2006 Hardware
  • Oh no! Not again! (Serious PC probs)I was upadting my graphic drivers (NVIDIA MX440 GeForce 4) and my sound drivers (Realtek AC'97 for VIA (R) audio controller), but when installing the…

    ... ram out and try again, repeat this until you find the faulty ...
    KeepGood KeepGood July 2006 Chit chat
  • rubber troublejus got 48K rubber speccy into my possesion, which was my first computer back then but only for few months before daddy decided to upgrade it for 48+…

    ... hand side of the upper RAM block. On an issue 4 ... directly to the right of IC 19.

    Take two ...
    DEATH DEATH August 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 …

    ... chance that some chip is faulty - chips are probably used ... swopping the position of the RAM ICs. That is to ... say, take out all the RAM chips, and put them ... you may still have bad RAM. The ROM routine to check ... 't test every bit of RAM, just every address. If ...
    DEATH DEATH September 2006 Hardware
  • 128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…

    ... , it supplies +12V to the RAM. I have several spare ZTX650 ... is no word of that IC.
    netomc netomc September 2006 Hardware
  • 128K memory testingDuring a mad half hour I decided to write a little memory tester program in BASIC using the information from the 48K service manual. Now I was wonder…

    ... tell from the BORDER which RAM section is faulty.
    Geoff Geoff October 2006 Sinclair Basic
  • 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…

    ... when I saw a 32Kb RAM pack for sale in Boots ... know whether the pack was faulty or it was a problem ...
    RandySparks RandySparks November 2006 Sinclair Miscellaneous
  • Multiface 128 problemHello everyone i have a 48k plus speccy which i firstly thought was working perfectly. It passed all the test of the official Sinclair test tape (cpu…

    ... chips deal with the 48K RAM switching, and are not present ... remove the chip, fit an IC socket and then replace the ...
    DEATH DEATH November 2006 Hardware
  • Multiface 128 problemHello everyone i have a 48k plus speccy which i firstly thought was working perfectly. It passed all the test of the official Sinclair test tape (cpu…

    ... to waste! Even if every IC on the board fails, there ... the -VE supply for the RAM chips?

    Couldn't ...
    MikeW MikeW November 2006 Hardware
  • 48k one dead, one dodgyhello everyone. I have 2 48k spectrum +'s (the one with the QL case). Both boards have issue 3B on them near the speaker. The first will power up …

    ... seem!

    the 8 ram chips, all of them apart ... on a socket

    IC 3 and IC4 are both ...
    chammyman chammyman December 2006 Hardware
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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
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HitBox

Word Docs Hits
faulty 2.3K 2.8K
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ic 1.5K 2.2K

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