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  • ZX Spectrum +2 (grey case) voltage converter circuit oddity.I'm working on repairing one of these and have encountered a possible problem and I'm not sure what I can best do about it, if anything needs to be d…

    ... />
    Good Spectrum: 12V -> 11.3V ... -12V -> -12.4V
    Spectrum under repair: 12V -> 11.7V ... -12V -> -13.9V ... only thing that uses the -12V supply). Removing IC3 lowers ... particularly hot. The reduced 12V supply still seems to be ...
    Zorn Zorn November 2014 Hardware
  • 48K No Sound?Repaired a 48K spectrum the other day that had the wrong PSU Plugged into it. Replaced 5v regulator, TR4, TR5 and all Electrolytic Caps. Spectrum th…

    ... cant hear the tape loading noise.
    I've not used ... able to hear the loading noise?

    On a side ...
    whoremoan whoremoan November 2014 Hardware
  • New Floppy Interface for the +2a/b (black case)Hello everybody! For a long time I wondered about the posibility of adding a FDD to the +2a/b (black). I knew it was possible; All the logic is alre…

    ... floppy drives that uses the +12v line unless you have a ...
    BCH BCH November 2014 Hardware
  • Black and White?I bought a ZX Spectrum +2 a while ago, and finally acquired a TV that could run it. But... It's coming up in black and white. It has worked in col…

    ... was also making a loud noise through the TV. I fine ...
    Ohowson Ohowson November 2014 Hardware
  • How noisy are modern laptops?I get lots of complaints from the missus (doesn't surprise me - Ed.) about the noise from my netbook. The old machine is getting on a bit now so wan…

    ... surprise me - Ed.) about the noise from my netbook. The old ...
    Graz Graz November 2014 Chit chat
  • I broke my 48k Speccy!!!!Hey guys, I am looking for some advice, I hope you can point me in the right direction. So, I went about replacing all the capacitors on my issue 4…

    ... ]-5.1v[/U][/B]
    12v = .98v
    +5v = 2.3v ...
    RSwipeCA RSwipeCA December 2014 Hardware
  • Joytsick Interface damaged SpectrumHello All, Sob.. I am a plonker, I did the cardinal sin, I was testing a bunch of joystick interfaces that I got off ebay and one didn't have the ke…

    ... I have lost -5v and +12v. Does this mean the lower ...
    Korinel Korinel January 2015 Hardware
  • Zx Spectrum peritel helpPublished also on Spanish forum link: [url]http://foro.speccy.org/viewtopic.php?f=8&t=4179&p=46000#p46000[/url] where a similar case was examined. G…

    ... the other post is red noise on black color, you can ...
    Pluto63 Pluto63 January 2015 Hardware
  • weird mobile phone glitchwondering if anyone else has had this. since about 2 years ago every now and then - say once a month - Ill be talking on my phone and suddenly get th…

    ... like sloshing static-y white noise that goes on for about ... will always both hear this noise, so it's not just ... a very unusual, harsh sounding noise, like a computer malfunctioning. the ... in between each blast of noise, lol. the person I was ...
    def chris def chris February 2015 Chit chat
  • TR4/TR5 replacementHi guys, I've got another Spectrum I'm working on now - an Issue 4S this time. When I originally got it, I powered it up and did the basic tests a…

    ... are very low - missing the +12V and -5V rails.

    Tekno Venus Tekno Venus February 2015 Hardware
  • 1 bit sound tricksSpecy can digitize sound via 1 bit tape input. But Specy 128 can play digi sounds more than 1 bit. Is it possible to converting 1 bit sounds to a bet…

    ... answer is: yes. Using Goldwave "noise reduction" and other effects I ...
    endi endi February 2015 Sinclair Miscellaneous
  • Spectrum+2 Tape Deck Buzz<p>I've been messing&nbsp;with a Iss3 0500&nbsp;Spectrum +2. So far I've&nbsp;replaced the electrolytic&nbsp;capacitors, flipped the transistors, add…

    ... I'm thinking that the noise/interference/buzz is being caused ... that makes exactly the same noise am I right in assuming ... known way to filter this noise/interference out? If not and ...
    retrogamemart retrogamemart June 2015 Hardware
  • favourite random sound fx in games?<p>always liked the little&nbsp;sound you used to get in Hypersports swimming event&nbsp;if you accidentally pressed 'breathe' before you were suppos…

    ... and that bizarre repeating clicky noise would happen, lol. think it ... tune
    also love the noise you get when you collect ...
    def chris def chris June 2015 Games
  • Guess the advert tagline - part 2Another seven taglines. Guess what adverts are they from. 1. [i]Argue! Barter! Lie through your teeth!!![/i] 2. [i]The heroes of the past are h…

    ... 's that haunting, eerie, scraping noise?[/i]

    7.[i ...
    PopoCop PopoCop July 2015 Games
  • not working issue 3Hi all, I received this mobo from ebay, after start i have this on screen [img]http://forest.no-ip.org/wos/issue3_01/20150728_135908.jpg[/img] …

    ... good :) I don't have 12v and don't have and ... after this i get back 12v but not and this time ...
    gorski gorski July 2015 Hardware
  • another non working issue 3 48kHi all, next! :) I don't have good filings about this speccy :) https://youtu.be/D9qpCR18-kI here is short video what this speccy do. we hav…

    ... speccy do.
    we have 12v and 5v and don't ...
    gorski gorski July 2015 Hardware
  • [NEW] Retro Virtual Machine v1.0.0 for OSX released!!!!Here it is! Retro Virtual Machine v1.0.0 RELEASED!!!! Many thanks first to Patrik Rak for the PZX format and for their Z80 tests without which RVM…

    ... /> Visual effects like scanlines, white noise, random line displacement, blur, etc ...
    jcgamestoy jcgamestoy September 2015 Emulators
  • 48k not startingHi team, I have 2 48k's, one works (Issue 4s), one doesn't (Issue 4a). The non-working one appears to start, but not finish the RAM test. The pape…

    ... .5V out. -5V, 5V and 12V are all present and within ...
    neillsun neillsun September 2015 Hardware
  • No colour - Issue 2 SpectrumThis one is driving me mad - any suggestions appreciated. I have an issue 2 Spectrum with no colour at all. I found the 12v rail was at just over …

    ... at all. I found the 12v rail was at just over ...
    Graham Graham October 2015 Hardware
  • My vinyl collection...ishI took some photies to post in the everything vinyl community on google+ of what i was listening to on my vinyl session on saturday so thought id pos…

    ... , psycho/rockabilly, nirvana, mudhoney, grunge, noise rock sort of stuff, blood ...
    mel the bell mel the bell October 2015 Chit chat
  • Another hardware question - lower 16k bad?Like in my last question, I am referring to this video from JoulesperCoulomb (https://www.youtube.com/watch?v=IzgCmldm2H4), this time, it is with the…

    ... is with the lower-right (12V) resistance.

    The video ...
    cbmeeks cbmeeks October 2015 Hardware
  • Harlequin Rev. G - error of labels at J16Hi, a German user found an error at Harlequin Rev.G board regarding the labels of J16. The labels of -5V and +12V are interchanged! That could be …

    ... . The labels of -5V and +12V are interchanged! That could be ...
    ingo ingo November 2015 Hardware
  • Issue 3B woesHello there, I currently have a Issue 3B for repairs around, it used to have broken upper and lower RAM, which I replaced with 41256-120 DRAMs (hac…

    ... are at 5.1V & 12V with no ripple (didn't ...
    Shockwav3 Shockwav3 November 2015 Hardware
  • Mr. Jido makes some noiseA little something to analyse and discuss for you. [code] ORG 60000 ; RND Generator: RND LD HL,EARTH LD A,(WIND) ADD A,L LD …

    A little something to analyse and discuss for you.

    [code]
    ORG 60000

    ; RND Generator:

    RND LD HL,EARTH
    LD A,(WIND)
    ADD A,L
    LD L,A
    LD D,(HL)
    LD HL,EARTH
    Andy Schraepel Andy Schraepel December 2015 Development
  • cassette player volumesHi - is it possible / likely that over time a stand-a-lone (i.e. not +2) cassette player loses some of its high end volume? Some games that used t…

    ... line... i.e. make the noise and striped lines but the ...
    retromad retromad January 2016 Hardware
  • Grey +2 tape motorAnyone know where to get a tape motor for a grey +2? Mine is on its last legs. When I got this +2 I serviced the deck and put new belts in but the…

    ... is as noisy as hell (noise which travels through the Speccys ...
    chinnyhill10 chinnyhill10 February 2016 Hardware
  • Spectrum +2 No Loading SoundHey all! Just got a +2, immaculate condition, inside AND out, comes up fine when tuned in, keys work, etc. BUT, there is zero sound coming from th…

    ... around upstairs (display issues, clicky noise from tape deck... well, multiple ...
    SimonLCFC SimonLCFC February 2016 Hardware
  • I'm getting oldI'm now just past 40, and i have started to feel that slow creep that i'm getting past it, yesterday i ran to cross the roads as the light was about …

    ... /> Now i sometimes make a noise when i stand up or ...
    zx1 zx1 May 2016 Chit chat
  • Ultimate games with short machine code files loaded lastThis is a bit geeky, you've been warned! I remember early Ultimate games loaded from tape had the ascending beeping noise, a "Please wait" message, …

    ... tape had the ascending beeping noise, a "Please wait" message, a ...
    textvoyage textvoyage May 2016 Games
  • Issue 4A, tests complete fine but get odd crashing problemHi all, I've got an issue 4A which has had all of its lower RAM replaced, TR4, TR5 as well as its CPU. It originally had quite high voltages (20-3…

    ... voltages (20-30v) on its 12v line and some very questionable ...
    Jet5y Jet5y May 2016 Hardware
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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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