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Search Again :: Adv Search 932 results in 0.001s
<1…16171819202122…32>
  • ZX SPECTRUM 48K color problemsHello, I am asking for your help... I found a ZX spectrum in a garage of a friend. He gave it to me telling that it didn't work. To say the truth it…

    ... all supply voltages? At a 4116 RAM chip, and at the ...
    RetroTechie RetroTechie February 2013 Hardware
  • Difference between brands of 4164 chips?I have gotten my hands on a batch of several brands of 4164 chips. Examples are NEC D4164C-3 and Mitsubishi M5K4164ANP-15. Anyone knows if any type …

    ... I use these as a 4116 (lower RAM) substitute.
    They ... /> I just checked the Mostek 4116 datasheet and it also needs ...
    Knik Knik February 2013 Hardware
  • Difference between brands of 4164 chips?I have gotten my hands on a batch of several brands of 4164 chips. Examples are NEC D4164C-3 and Mitsubishi M5K4164ANP-15. Anyone knows if any type …

    Interesting...
    I can't get many NEC D4164's so need to get other brands as well.

    However I think that 4116's should be replaced by 4116's ;)
    I have them in stock too.
    bverstee bverstee February 2013 Hardware
  • Difference between brands of 4164 chips?I have gotten my hands on a batch of several brands of 4164 chips. Examples are NEC D4164C-3 and Mitsubishi M5K4164ANP-15. Anyone knows if any type …

    ... argument goes: The problem with 4116's is that when they ... . Which can take out the 4116's after you've repaired ...
    csmith csmith February 2013 Hardware
  • Difference between brands of 4164 chips?I have gotten my hands on a batch of several brands of 4164 chips. Examples are NEC D4164C-3 and Mitsubishi M5K4164ANP-15. Anyone knows if any type …

    ... . For one, because of the 4116's multiple power supply issues ...
    RetroTechie RetroTechie February 2013 Hardware
  • Difference between brands of 4164 chips?I have gotten my hands on a batch of several brands of 4164 chips. Examples are NEC D4164C-3 and Mitsubishi M5K4164ANP-15. Anyone knows if any type …

    I received some NEC D4164C-3 from Ben.
    I tested them and they work fine as upper (32K) RAM replacements in my Spectrums.

    I'll test them as 4116 lower (16K) RAM replacements on my memory adapter pcbs this week and let you know the result.
    Knik Knik February 2013 Hardware
  • Difference between brands of 4164 chips?I have gotten my hands on a batch of several brands of 4164 chips. Examples are NEC D4164C-3 and Mitsubishi M5K4164ANP-15. Anyone knows if any type …

    Tested the NEC D4164C-3 as 4116 lower (16K) RAM replacements on my memory adapter pcbs and they work just fine.
    Knik Knik February 2013 Hardware
  • WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…

    ... cycle. I've followed uPD 4116 DRAM specifications so that this ...
    mcleod_ideafix mcleod_ideafix March 2013 Hardware
  • WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…

    ... , which means not using the 4116 and thus not a simple ...
    csmith csmith March 2013 Hardware
  • Flashing coloured blocks - diagnosisHiya, hope this is the right place for this... Was given an Issue 2 48K by a someone yesterday that hasn't been powered on in 20 years, which works …

    ... to have to find some 4116 equivalents and go the process ...
    junosix junosix April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... is often caused by failed 4116 RAM chips that make up ... to source another ULA or 4116 RAM chips, I'd verify ...
    JeffB JeffB April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... /> [/COLOR]Usually some of the 4116 chips die when -12 and ...
    roko roko April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... sign its something else? The 4116 chips? Will I have to ...
    deadeye deadeye April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... replaced both transistors. Sometimes a 4116 shorts one or more of ...
    Zorn Zorn April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... sign its something else? The 4116 chips? Will I have to ...
    roko roko April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... ? Should I replace all the 4116 chips and test each one ...
    deadeye deadeye April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    If a 4116 has failed by shorting one ...
    Zorn Zorn April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... +12) running towards the 4116 block, or by removing all ... -5 powerpins from the 4116 chips and then resoldering ... on with only one 4116 in position. When noticing ... and found a defect 4116. When the voltages are ... normal the 4116 is good enough to ...
    roko roko April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... +12) running towards the 4116 block, or by removing all ... -5 powerpins from the 4116 chips and then resoldering ... on with only one 4116 in position. When noticing ... and found a defect 4116. When the voltages are ... normal the 4116 is good enough to ...
    deadeye deadeye April 2013 Hardware
  • Faulty 48K Issue 3 motherboardHi I have a faulty Issue 3 motherboard and would appreciate it if somebody can steer me in the right direction of where to begin with the fault find…

    ... should be present at the 4116 RAM chips for example.
    RetroTechie RetroTechie April 2013 Hardware
  • Faulty 48K Issue 3 motherboardHi I have a faulty Issue 3 motherboard and would appreciate it if somebody can steer me in the right direction of where to begin with the fault find…

    ... 16K. I tested all the 4116 chips, the ULA, CPU and ... />
    - Check address bus from 4116 chips and ULA. I mean ... pin 5 (A0) from all 4116 chips are joining and are ... />
    - Check data bus from 4116 and ULA.

    - Check ...
    Jose_Leandro Jose_Leandro April 2013 Hardware
  • 48k fuzzy screen errorHi all, I just got a ZX Spectrum 48k (rubber keys) from eBay and when I plug it in the main screen on the TV is all fuzzy and garbled in the middle.…

    ... circle of failure with the 4116 RAM ICs. Fortunately, it's ...
    Zorn Zorn April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... , TR5 and removed all the 4116 chips.

    [IMG]http ...
    deadeye deadeye April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... in your case are the 4116 chips. If I were you ...
    Falco-F8L Falco-F8L April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... a case of putting each 4116 back in one at a ...
    deadeye deadeye April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... a case of putting each 4116 back in one at a ...
    Falco-F8L Falco-F8L April 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... all but 3 of the 4116's. Replaced TR4 and TR5 ...
    deadeye deadeye May 2013 Hardware
  • 48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…

    ... your screen suggest that most 4116 chips give out correct data ...
    roko roko May 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…

    ... tester unfortunately cannot test the 4116 chip, so I resort again ... also de-solder all the 4116 chips on the faulty board ...
    Pierre Pierre May 2013 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…

    ... 48K Spectrum's have operational 4116 and work fine :smile:, but ...
    1024MAK 1024MAK May 2013 Hardware
<1…16171819202122…32>

Latest Posts

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    John Elliott on April 21
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HitBox

Word Docs Hits
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  • 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,…
  • 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…
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