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Search Again :: Adv Search 1000 results in 0.010s
<1234567…34>
  • Replacing lower RAM 4116 ZX Spectrum 48k - desoldering advice please?A long post, but interesting pictures perhaps. :) I'd like some advice: (also apologies I think I picked the wrong 'Hardware' category for this, plea…

    ... seemed to indicate a lower RAM issue. It hadn't ... from retroleum.co.uk: four 4116 chips, nine 16-dip ... to desolder and remove the 4116, replacing them with a ... place and installed a new 4116 but the pattern is ... A4 line from the neighbouring 4116, so I have to ...
    Kamineko Kamineko September 2017 Hardware
  • 16K/48K Lower RAM (4116) replacement.You may want to read [URL="http://www.worldofspectrum.org/forums/showthread.php?t=37957"]this thread[/URL] for background information on the quest t…

    ... based replacement for the lower RAM that works in all 16K ... the column address to the RAM and so there isn't ... that appear on the lower RAM address lines. In particular, in ... is the ZX Spectrum Lower RAM Replacement Module, pictured below:
    Zorn Zorn May 2013 Hardware
  • Video ZX Spectrum+ 48k<span>Good day ... is a bit of time that I try to fix my zx spectrum ... I replaced the ram 4116, all electrolytic capacitors ... but the monitor loo…

    ... zx spectrum ... I replaced the ram 4116, all electrolytic capacitors ... but the ...
    Puglisia Puglisia May 2015 Hardware
  • Speccy MTBFHi, Looking at the old (issue 1-2) PCBs, they do look like someone knocked them up in an etching bath/with a soldering iron in their shed but has th…

    ... . Most failure was: 16K RAM (4116) chips, probably because of ... triple power. With RAM failure usually voltage converter ... Then: CPU, ULA, 32KB RAM chips, modulator, power supply...
    4116 it would be pretty reliable ...
    piters piters May 2006 Hardware
  • broken ZX 48K, help neededI have a broken down ZX 48K :cry: The keyboard membrane is almost completely destroyed, and this is what screen shows on power-on: [IMG]http://www.h…

    Most likely cause - RAM in the lower 16k has ... the voltages to the lower RAM (4116). Make sure the +5v, -5v ... power supply or the lower RAM (if the internal power supply ... it will kill the lower RAM).
    Winston Winston June 2008 Hardware
  • The Sadness of my Decaying Speccies.I've been avidly collecting ZX Spectrums since the late 90's and whilst at the time of the late 90's and early millennium my Spectrums and associated…

    Lower RAM (4116) replacement is [I]technically[/I] ... />
    Uses ordinary 32Kx8 static RAM + 2 logic IC's - all ... own Speccy collection, most lower RAM still works, but keyboard foils ...
    RetroTechie RetroTechie September 2010 Sinclair Miscellaneous
  • zx spectrum ULAis the ULA in the 16K the same as in the 48K could you take the 16K ULA and place it in a 48K I ask this because i have a speccy thats dogy with th…

    ok, looked at the ram 4116, two of them are realy really hot, the others are only slightly warm. SOMETIMES it works but most times it does not...I looked at TR4 but it seemes to be fine
    Robin Robin October 2010 Hardware
  • Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…

    ... FIX
    * Rip of Video RAM 4116 and put 4164 doin? robotron ... fix
    * Rip of Upper RAM and IC25 & 26 an ...
    Mobutu Mobutu April 2011 Hardware
  • ZX Spectrum 48k issue 3b power problem?Hi :) I was lucky enough to find a couple of ZX Spectrums at a car boot sale yesterday. I spent the evening fiddling about with one (issue 2) and t…

    ... ( very strange) maybe a lower ram problem. The last spectrum I ... . The problem was a faultly ram chip 4116.

    Bye
    ram 4116 chips are working okay? I ...
    vinnivee vinnivee April 2011 Hardware
  • ZX Spectrum 48k issue 3b power problem?Hi :) I was lucky enough to find a couple of ZX Spectrums at a car boot sale yesterday. I spent the evening fiddling about with one (issue 2) and t…

    ... do I check whether the ram 4116 chips are working okay? I ... know any method to test RAM only with a multimeter. Even ... ( Winston) that it makes some RAM test and help me in ... rom test and fruitcake 128K RAM test.

    Bye
    Jose_Leandro Jose_Leandro April 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…

    ... machine powered up, the lower RAM (4116 memory) can become faulty, the ... TMS-4116 datasheet specifically warns about this ...
    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…

    ... machine powered up, the lower RAM (4116 memory) can become faulty, the ... TMS-4116 datasheet specifically warns about this ...
    Muzer Muzer June 2011 Hardware
  • Rom Cartridge - How does it work?So I've got me an IF2 and it has this ROM cartridge slot. How does it work? I read Paul Farrows site but one question remains unanswered. If I have o…

    it replaces the lower ram, or part of it.. thats ... if you have faulty lower ram 4116(?) chips.. as it's bypassing ...
    fog fog June 2011 Hardware
  • Rom Cartridge - How does it work?So I've got me an IF2 and it has this ROM cartridge slot. How does it work? I read Paul Farrows site but one question remains unanswered. If I have o…

    ... ;546421]it replaces the lower ram, or part of it.. thats ... if you have faulty lower ram 4116(?) chips.. as it's bypassing ... , so it cannot replace lower RAM, only lower ROM.
    Question ... happen if you replace lower RAM (screen) with ROM?
    LCD LCD 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…

    ... show the 'default' contents of 4116 mem. I take it from ... thinking about removing all lower RAM (4116) and fitting sockets. Like experienced ...
    roko roko January 2012 Hardware
  • 48k+ CPU SocketThink I've bitten off more than I can chew... After the desoldering my z80 went without incident, no damaged pads, tracks etc. I expected the socket…

    You have checked that you have -5V +12V and +5V on the lower ram (4116's) and +5V on the high ram?

    CHeck the spectrum repair guide on this site, is very useful.
    Johan1973 Johan1973 June 2012 Hardware
  • Semi-Dead Spectrum - Help RequestedI have finally got my hands on my two old Spectrums - neither of which work, but ideally I hope to get both of them working again. Spectrum number o…

    Definitely replace all the electrolytic capacitors. A fault in some of them could destroy the lower RAM 4116 ICs and that'd probably be worse than the problem you've got now.
    Zorn Zorn October 2012 Hardware
  • Looking for Floppy drive, not really ZX relatedI know this is ZX hardware forum, but I am just asking if someone knows some store online that has floppy drives, pc floppy drives available still? T…

    Yes, I want it. I have been meaning to build an external drive :)
    How much do you want for it? Do you take trade? I have a bunch of chips for ZX if you are interested, 4164 ram, 4116 ram, etc.
    Johan1973 Johan1973 November 2012 Hardware
  • Defective +2 grey with only random coloured screen while powering onHi, so the story goes: After buying myself an divIDE and a grey +2, this runs well for a few days. But while playing a game the picture stucks and …

    ... supply based on TR4, replace RAM (4116) chips as necessary and hope ... , and then check out the RAM.

    Plugging stuff onto ...
    DEATH DEATH September 2013 Hardware
  • New Spectrum User - Inveterate UpgraderI've been asking a few questions about my Speccy, which is the first I've owned despite my advancingh years. I was a C64 kid, but please don't hold …

    ... particularly fatal for the lower ram (4116) which depends on +5v/-5v ...
    balford balford July 2014 Hardware
  • Short Circuit Damage?Hey Spectrum fans, Currently trying to diagnose what is wrong with my 48K Issue 4B ZX Spectrum. The initial problem was the fact it would not boot -…

    ... that it was a lower RAM 4116 IC that you reversed?
    4116's I was about to ...
    balford balford August 2014 Hardware
  • 48k Spectrum "Jail Bars" Removal?Hi all Just curious I think I saw a post here about the bars that go down the screen on some 48k's I think he referred to them as "jail bars". Any…

    ... .

    C44 is the RAM 4116 +12V.

    Measurements are ... />
    3) Decoupling better the 4116 +12V line is the way ... C44 and pins 8 of 4116 RAMs, a 100 uF capacitor ...
    Falco-F8L Falco-F8L September 2014 Hardware
  • 48K Upper memory issues?Having more issues with the 48K spectrum I just fixed that had the black screen in this thread [URL="http://www.worldofspectrum.org/forums/showthread…

    That points to a bit 1 error in both lower and upper RAM, so replace IC7 (lower RAM, 4116) and IC16 (upper RAM, 4532 but replace with 4164).

    B
    balford balford December 2014 Hardware
  • Dead SpectrumHello guys, I've just bought a dead Speccy 48k (Rubber Keyboard Issue 3 board). Basically, when powered on it initially appears to boot up ok, but in…

    ... is one of the lower RAM (4116) chips, or another problem.
    1024MAK 1024MAK August 2015 Hardware
  • Speccy 4A board problemHi all. I was hoping for some help with my Speccy (with 4A Board) before I send it off for repair. When I power it on all looks fine (i.e. copyright …

    ... it does not have enough RAM to run :-(
    < ... most likely the ‘lower’ RAM (4116 or equivalent DRAM chips). ... corrupted due to faulty ‘upper’ RAM.

    The ... to eliminate the ‘upper’ RAM, you could disable it. ... if any of the 4116 DRAM chips are hotter ...
    1024MAK 1024MAK September 2020 Hardware
  • Wanted 10 - 4116 Ram ChipsHi Can any one help I am trying to get hold of 10 4116 RAM chips for a 48K Spectrum. Does any one know who might stock them. I can get a minimum of …

    Hi
    Can any one help I am trying to get hold of 10 4116 RAM chips for a 48K Spectrum. Does any one know who might stock them. I can get a minimum of 50 from Hong Kong but only need 10.

    Best wishes
    Martin Baugh
    Martin Baugh Martin Baugh March 2007 Wanted
  • Source of 4116 ramSomeone on eBay was selling 500 pieces of 4116 ram. The auction ended without bids, but he's willing to sell it in lots of 50 now. Someone in Spain a…

    ... was selling 500 pieces of 4116 ram. The auction ended without bids ...
    zxbruno zxbruno March 2008 Hardware
  • 4116 Ram chip replacements?Hello. I am in the work of gathering replacement parts for my speccy 48k. And I would like to know what chips is good replacement for the 4116 ram ch…

    ... is good replacement for the 4116 ram chips, and where can I ... ? I have not found any 4116 anywhere on the web?
    Johan1973 Johan1973 April 2012 Hardware
  • 4116 Ceramic Ram ChipsHi all, I have a few 4116 Ceramic Ram Chips to sell. If you have any interest, please PM. Greetings, Retrorepair

    Hi all,

    I have a few 4116 Ceramic Ram Chips to sell.

    If you have any interest, please PM.

    Greetings,
    Retrorepair
    retrorepair retrorepair June 2013 Sales
  • HELP 4532 or 4864 RAM wanted !Hello My real spectrum fell off yesterday I know that one RAM memory chip is out of order There was 8 X HM4864P-2 but I saw in the Spectrum schemati…

    ...
    I know that one RAM memory chip is out of ... true because 4116 are already here to set 16K of RAM so ...
    patrick delvenne patrick delvenne January 2005 Wanted
<1234567…34>

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ram 12.6K 21.4K
4116 933 1.4K

Related Threads

  • Wanted 10 - 4116 Ram ChipsHi<br /> Can any one help I am trying to get hold of 10 4116 RAM chips for a 48K Spectrum. Does any one know who might stock them. I can get a minim…
  • Source of 4116 ramSomeone on eBay was selling 500 pieces of 4116 ram. The auction ended without bids, but he's willing to sell it in lots of 50 now. Someone in Spain a…
  • 4116 ram chipsI need some ram chips to fix my 48k + issue3b, I have done the composite video mod and it works, now i just wanna play games on it but its stuck on r…
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  • 4116 Ram chip replacements?Hello. I am in the work of gathering replacement parts for my speccy 48k. And I would like to know what chips is good replacement for the 4116 ram ch…
  • 16K/48K Lower RAM (4116) replacement.You may want to read [URL="http://www.worldofspectrum.org/forums/showthread.php?t=37957"]this thread[/URL] for background information on the quest t…
  • 4116 Ceramic Ram ChipsHi all,<br /> <br /> I have a few 4116 Ceramic Ram Chips to sell.<br /> <br /> If you have any interest, please PM.<br /> <br /> Greetings,<br /> Ret…
  • 65x used but tested and working 4116 RAM chipsFor any repairman: 65x 4116 chips, used but tested and working.<br /> Different brands, but ITT and STC mainly.<br /> <br /> ?25 + postage.<br /> <br…
  • 4116-15NL vs 4116-20NLProbably this has been asked before but I am not finding the answer..<br /> <br /> Can anyone explain the difference between the 15NL and 20NL chips,…
  • Replacing lower RAM 4116 ZX Spectrum 48k - desoldering advice please?A long post, but interesting pictures perhaps. :) I'd like some advice: (also apologies I think I picked the wrong 'Hardware' category for this, plea…

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