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<1…15161718192021…34>
  • Running a ZX Spectrum Stateside.Ok, so I have some spare time and want to hook my Spectrums up to my Big 60" TV for some fun. My Sony AV unit should be able to translate the signal …

    ... the Spectrum along with the ULA that dictates the video output ... as hard, therefore dissipating less heat.

    I use one ...
    balford balford May 2015 Sinclair Miscellaneous
  • Have I damaged the keyboard membrane?I've just picked up a Spectrum+, and am a total novice when it comes to fixing hardware, but thought I'd give the Speccy a clean and see if I could r…

    ... is caused by heat from the components like the ULA and the ...
    Your Spec-chum Your Spec-chum July 2015 Hardware
  • ULA 1E7 in 3B board?Hi all. Any comments on the following would be appreciated. I have an issue 4a and an issue 3b Spectrum. While having a look around inside the 3b …

    ... 's not been exposed to heat, perhaps? Ie, used? A mystery ... ?!
    Mark, as you mentioned ULA problems potentially caused by misuse ...
    Jim M Jim M September 2015 Hardware
  • I recapped my 128K toastrack, installed stereo kit and detached audio from video, but...Hello fellow forumers! I'm seeking for help: I've finally decided to change all electrolytic capacitors of my 6U (with all Panasonics 105oC)... Af…

    ... ... Anything easier just to exclude ULA fault? It is soldered (I ... kind of soldering fault destroyed ULA, won't it destroy another ... ULA?
    I didn't use ... sure it wasn't a heat problem. I firstly suspected a ...
    geosiou geosiou October 2015 Hardware
  • Faulty 48+ Help NeededHi, This is what I get when I plug in the spectrum, this is tuned in. Vid shows a reset. Any ideas, or pointers on the first thing to check. Keyboa…

    ... rather cold, nothing like the heat that was coming from the ... , and I have tested the ULA as working in another board ...
    lesoleil70 lesoleil70 November 2015 Hardware
  • Modern PSU: picture improvement?I've recently seen advertised some 'replacement power supplies' for Spectrums for which the claim is made that they may make an improvement in pictur…

    ... versatile option, but minimizes internal heat.
    2) Replace +5V ... input voltage, and also keeps heat losses down. Works fine ... options just produce more waste heat inside the Spectrum than ... And thus shortens life of ULA, keyboard foil, RAM chips etc ...
    RetroTechie RetroTechie December 2015 Hardware
  • Jiiira's Sparrow LITEHi All, Just for info .. :) big eprom, cheap 32KB ram and etc. i don't know specification .. :) https://youtu.be/NbI7E1aebrM modern speccy .. …

    ... />

    It requires original ULA chip (supported are most common ... LM2596 regulator, producing much less heat than original 7805

    gorski gorski December 2015 Hardware
  • zx81 helpHello all Sorry if I have posted in wrong section. I have a question about my zx81 I am getting no screen and the metal heatsink (plate that sti…

    ... regulator get rid of excessive heat.

    Is this a ... first two versions of the ULA. So please post up the ... numbering of the ULA.

    [b][i]Mark ...
    1024MAK 1024MAK February 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... big sheets and could possibly heat bend it to make a ... pipe glue they use on sink waste pipes to glue it ...
    caver99 caver99 April 2016 Hardware
  • ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…

    ... only between CPU and keyboard/ULA. External interface (where ROM cartrige ... or "upper" RAM while the ULA gets screen data.

    heat build up is limited and ...
    1024MAK 1024MAK July 2016 Hardware
  • Heat-sinking the spectrum 48+ :| [URL=http://s1063.photobucket.com/user/JRT480/media/Fotografia1988_zps5egnygdp.jpg.html][IMG]http://i1063.photobucket.com/albums/t515/JRT480/…

    ... 'm not sure the Spectrum ULA needs a heatsink, on account ... regulator. That will reduce the heat in the case, allowing the ... /> And the components that like heat the least, are electrolytic capacitors ...
    1024MAK 1024MAK October 2016 Hardware
  • How to connect universal PSU?A fleamarket find! Spectrum+ without PSU. :) I don´t know if it works. I have universal PSU, please confirm which is the correct polarity? [b]A)…

    ... water pressure in your kitchen sink pipes. If the pressure is ... amount of extra voltage into heat, but that’s another story ...
    Ast_A_Moore Ast_A_Moore September 2017 Hardware
  • Broken Issue 2 - likely culpritsI've just got hold of an issue 2 spectrum with an interesting layout (heatsink is vertical and goes down to the speaker, some variable resistors and …

    It might heat up a bit slower with a regulated PSU but it still get hot (the whole heatsink gets hot to the touch).

    One bit of good news is that I swapped in a known working ULA and get the same crash so it doesn't appear to be a broken ULA.
    dave18 dave18 March 2018 Hardware
  • +2 crashes upon pressing some keysYears ago I purchased off ebay a mint condition, Dixons special offer boxed UK-made issue 1 +2. I did not use it so much until recently however, focu…

    ... the leads. Then you can heat the solder pad, and use ... filling!

    With the ULA, the metal heatsink parts fit ... also appear to be a heat related fault. Especially if physical ...
    1024MAK 1024MAK April 2018 Hardware
  • Replacing voltage regulators - need to sanity check a few things pleaseHi Everyone I'm in the process (with a lot of help from some friends at Greenford Computer Club), of giving my three Speccys some much needed prev…

    ...
    [quote="chrisgreen;56947"][b]ULA heatsinks[/b]
    As the ... heatsink to the the ULA without needing to desocket ... ll need to pull the ULA out of the +2 ... holes and voids to improve heat transfer, not to act ... has the later version ULA that runs a little ...
    1024MAK 1024MAK May 2019 Hardware
  • Sorting out a Case for a new Raspberry PiI have not got a new Pi yet so this is a bit academic. If I do get one I would want to cut out the USB input . This was done "as standard" on the Fuz…

    ... than mess around with tiny heat sinks in an enclosed box ... in the ZX81/spectrum ULA mould which IMHO are totally ...
    moggy moggy February 2020 Chit chat
  • Why is it so hard to produce ZX Spectrum add-on Hardware in the UK.Arguably the UK Spectrum add-on market is stagnating? Why ? Well obviously the ZX Spectrum is a very old retro micro so it's fan base would normall…

    ... can replace their ula with something that supports ula+. Or they can ... to complete without having to sink in personal funds to cover ...
    Alcoholics Anonymous Alcoholics Anonymous October 2020 Hardware
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …

    ... 7805... its amazing how much heat them buggers create ..[/quote] ... is not required on the ULA. How many old cars ... for [b]ANY[/b] ULA in any of their computers ... yes, I know Amstrad did). ULA chips use a technology that ... extend the life of a ULA chip. I’m not ...
    1024MAK 1024MAK October 2021 Hardware
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …

    ... These are the later 7K ULA series. There is not ... much information about this ULA technology. But it’s ... Amstrad used on the ULA in the +2 (grey ... machines fitted with ULA40007 have heat sinks. Again, I’ ... Do we know which Ferranti ULA technology/series are used ...
    1024MAK 1024MAK October 2021 Hardware
  • Climate ChangeI have listened to both sides in this debate. But I cannot help feeling a bit skeptical at times still. I think both sides are getting it a bit wrong…

    ... plastic).

    The heat in the atmosphere means that ... Meanwhile, elsewhere the increase atmospheric heat is causing dryer areas to ... the darker colour absorbs more heat from the sun, unlike ... the worlds biggest ‘carbon sink’, fast growing trees extract ...
    1024MAK 1024MAK November 2021 Chit chat
  • Using a thermal camera to fix speccy's.Hi All, Thought I'd share another repair... Got a board that collapsed the bench supply straight away ( I run a bench supply and give it just enou…

    ... ]
    This resistor near the ULA ( The big one ) gets quite ... Electrolytics is quite sensitive to heat.

    Thermal cameras aren ...
    cj7hawk cj7hawk January 2022 Hardware
  • Is it possible to make the Z80 execute a bizarre instruction?What happens when it gets an unrecognised instruction OP Code, I mean something following a #ED that isn't one of the undocumented instructions eithe…

    ... power level, so it’s heat level will build until it ... reaches an equilibrium (heat production vs. heat dissipation into the air ... , but that requires hardware. The ULA regularly stops the Z80, but ...
    1024MAK 1024MAK March 2022 Development
  • Emulator compatibility with real SpectrumHi emulator programmers... Having spotted for the last 6 months that my iPAQ is still missing a Spectrum emulator I started typing last tuesday - an…

    ... is slower because of the ULA)?

    Or must I ...
    Anders Anders September 2001 Emulators
  • Need games...The following games are necessary, where they can be downloaded: Only tap or tzx,and AY or Tittle screens: Imperial Wizard Rally Cross Simulator Re…

    The following games are necessary, where they can be downloaded:
    Only tap or tzx,and AY or Tittle screens:
    Imperial Wizard
    Rally Cross Simulator
    Rebel Squad
    Slicks
    White Heat
    Prince Clumsy
    Tarantula
    Aleksey Aleksey February 2002 Games
  • I have...I still have a working ZX-81 plus 16k RAM pack, still in it's box. I also have a ZX Spectrum 48k computer with the Sinclair Microdrive (plus Microdr…

    ... . My ZX-81 would over heat in hot weather and the ...
    S S May 2001 Sales
  • SPIN Public Beta 0.1b Available for downloadHi all, back again, and as just recently announced on CSS, SPIN has been updated. Here's the post to CSS (or the relevant parts): It's been a bu…

    ... and drop support.
    Added ULA Snow effect, and Floating bus ...
    Dunny Dunny May 2002 Emulators
  • Obliterate - released by The Sun newspaper?Anyone know anything about this game? It was launched by The Sun newspaper in 1982 in connection with the Falklands War. The game is called 'Oblitera…

    ... /> and has to try and sink Argentine destroyers. No-one on ...
    wadsterboy wadsterboy June 2002 Games
  • ZX Spectrum Community ContributionThere is a new interface named MB03 under development(IDE,Flashcard reader,2MB RAM,etc).You can see it on Sintech website. The price of this interfa…

    ... a integrated circuit (such as ULA). But to invent such an ...
    Anestis Anestis July 2002 Sinclair Miscellaneous
  • the happiest days of your life-pt2hello,again i have come up with 2 solutions to the problem of solving this game:- 1.the more people that try to solve this game (by combining diffe…

    ... (in dormitory)
    empty kettle+sink=full kettle(in dormitory)
    Anonymous Anonymous July 2002 Games
  • WoS (or other speccy sites) t-shirts? 'Royalties' available.[url="http://www.geekstyle.co.uk/ntkmart.cgi?ship=Win"]http://www.geekstyle.co.uk/ntkmart.cgi?ship=Win[/url] Well this is quite off-topic.... I jus…

    ... I feel this thread will sink like a stone? :)

    thx1138 thx1138 November 2002 Sinclair Miscellaneous
<1…15161718192021…34>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott 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
  • European Software Titles with an English version
    harriusherbartio on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21
  • +3 Disk drive motor
    AndyC on April 21
  • Celebrity deaths...
    mel the bell on April 20

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  • 128k heat sink - ULA problems and a hintHello,<br /> <br /> I had two ZX Spectrum 128k with a similar behaviour. One item worked only a short time after switching on and then there were inc…
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ?<br /> i wonder if anybody has don…
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