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<1234567…34>
  • 48k PSU UpgradeCan anyone give the definitive word on a PSU upgrade (rather than just a replacement) for 48k machines? I'm thinking of adding at least an IDE inter…

    ... the definitive word on a PSU upgrade (rather than just a ... />
    Using an AT/ATX PSU and regulating the 12v line ... />
    Purchasing a beefy 9v PSU (2 or 3A) and using that ...
    napoleonblownaparte napoleonblownaparte May 2012 Hardware
  • Weird 128k (toastrack) PSU modificationHi all. I've just picked up a bunch of machines from ebay and the 128 PSU has this weird modification: [img]https://www.dropbox.com/s/hetr2zlp1…

    ... from ebay and the 128 PSU has this weird modification:
    PSU, 2 red, 1 black and 1 ...
    Geezerdiamond Geezerdiamond November 2016 Hardware
  • Humming psuI have just got myself a +2b and the psu is buzzing like mad. It seems to be working fine, though. It arrived this morning and I have had it switched…

    ... I relaced some diodes in PSU and it stopped buzzing .. ... REPAIR

    The Spectrum PSU suffers mainly from the wire ... cured, by fitting a replacement 2.1mm female plug. Ensure that Negative ... This obviously shorts out the PSU, with the effect of blowing ...
    Steve(spt) Steve(spt) November 2004 Sinclair Miscellaneous
  • Does a spectrum +2 power supply work on a +3?tiny question, does a spectrum +2 power supply work for a +3?

    ... (amps) than the +2A/B psu can provide.

    PSU (you could easily make ... &hash=item3371817d0a]Pico PSU Board 12V 120W ?16 ... POWER-SUPPLY-12v-PSU-5-5mm-x-2-1mm-/250926915416?pt=UK_Computing_LaptopAccessories_PowerSupplies ...
    Zetr0 Zetr0 April 2012 Hardware
  • THE VOLTAGE OF THE POWER SUPPLY UNITCould anybody who has a ZX Spectrum 128k +2 count with a voltameter the voltage which the power supply unit gives to the Spectrum and tell me the [B]…

    For a ZX Spectrum 128k +2 (the grey type, the first ... a "9V 2.1A" power supply with a 2.1mm DC power plug ... , the output voltages on my PSU are ...
    1024MAK 1024MAK August 2012 Hardware
  • ZX Spectrum + 2 128K - Video Issue?Hi All, I have just picked up a secondhand +2 and am having a problem with it. :( When I power the unit on and hook it up to my TV with the RF cable…

    ... DC power jack is a 2.1mm/5.5mm low voltage power ... like on the 48k model (PSU marked 9V DC).
    [*]The ... it's power socket. The PSU is marked +2A on the ... smaller. It uses the same PSU as a +2A.
    [/LIST ... will work with a +3 PSU.

    Some +2A and ...
    1024MAK 1024MAK November 2012 Hardware
  • ZX Spectrum + 2 128K - Video Issue?Hi All, I have just picked up a secondhand +2 and am having a problem with it. :( When I power the unit on and hook it up to my TV with the RF cable…

    ... DC power jack is a 2.1mm/5.5mm low voltage power ... like on the 48k model (PSU marked 9V DC).
    [*]The ... it's power socket. The PSU is marked +2A on the ... smaller. It uses the same PSU as a +2A.
    [/LIST ... will work with a +3 PSU.

    Some +2A and ...
    Drbabbers Drbabbers November 2012 Hardware
  • 48K problemI have the following problem with my 48K: When I turn it on with nothing plugged into the Interface port everything is ok. When something is plugged …

    ... power supply unit (PSU). With the PSU not connected to your ...
    To test the PSU with the Spectrum connected, you ... to use a Sinclair PSU, any regulated or unregulated ... use 12V DC regulated PSU current rated at 1 ... a 5.5mm outer, 2.1mm inner DC power plug. ...
    1024MAK 1024MAK December 2012 Hardware
  • Spectrum 48k PSUHi, can anyone suggest an alternative off the shelf power adapter that will be compatible with the ZX Spectrum 48k? I've just picked an old machin…

    ... /> These are the Sinclair / Amstrad PSU ratings:

    Sinclair 16K ... DC at 1.4A
    2.1mm DC power plug wired centre ...
    9V DC at 2.1A
    2.1mm DC power plug wired ... use the better type of PSU known as a "regulated" type ...
    1024MAK 1024MAK May 2013 Hardware
  • power supply for +2 greyJust bought a fully working +2 grey but it dont have a power supply. I did see it working though so i do know it works. Whats the voltage and amps fo…

    ... the Sinclair / Amstrad PSU ratings:

    Amstrad +2 grey
    9V ... DC at 2.1A
    2.1mm DC power plug wired ... use the better type of PSU known as a "regulated" type ...
    1024MAK 1024MAK May 2013 Hardware
  • Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…

    ... plug is replaced with a 2.1mm power plug.

    The ... any damage if a ZX81 PSU was connected to the EAR ... DC.

    The replacement PSU - I think it is unlikely ... the specs on the replacement PSU.

    Oh, and to ...
    1024MAK 1024MAK March 2014 Hardware
  • 12v in a Spectrum +2My Speccy 128 +2 requires a 9v 2.1a PSU, all my 9v PSU's are much below 2.1 amps :( I do however have a 12v 2amp PSU, if I reverse the polarity so t…

    ... />
    Your 12V 2A PSU should be fine for powering ... that the polarity on the 2.1mm mini power plug is ... k
    +12V from PSU ---[___|]-----[___|]-----[___|]---- +9V ...

    0V from PSU ----------------------------------- 0V to Spectrum[/CODE][URL ...
    1024MAK 1024MAK April 2014 Hardware
  • 12v in a Spectrum +2My Speccy 128 +2 requires a 9v 2.1a PSU, all my 9v PSU's are much below 2.1 amps :( I do however have a 12v 2amp PSU, if I reverse the polarity so t…

    ... />
    Your 12V 2A PSU should be fine for powering ... that the polarity on the 2.1mm mini power plug is ... k
    +12V from PSU ---[___|]-----[___|]-----[___|]---- +9V ...

    0V from PSU ----------------------------------- 0V to Spectrum[/CODE][URL ...
    stu232 stu232 April 2014 Hardware
  • Modern day replacement powersupply for ZX 128kHi All Anyone got any links to a modern day replacement powersupply for ZX 128k. I don't mind lobbing off the end and installing my own barrel, just…

    Yes, if you order the 2.1mm version. I don't like ... [/URL] in line between the PSU and the DC barrel plug ...
    balford balford August 2014 Hardware
  • ZX81 + 16k RAM Pack + Original PSU... What's it worth?Hey guys Got my ZX81 this morning its in excellent condition.. [IMG]http://s30.postimg.org/iwetzxku9/IMG_20140818_142443.jpg[/IMG] However, my T…

    ... PSU to power a ZX81 if you make up a simple 2.1mm ...
    balford balford August 2014 Sinclair Miscellaneous
  • ZX81 + 16k RAM Pack + Original PSU... What's it worth?Hey guys Got my ZX81 this morning its in excellent condition.. [IMG]http://s30.postimg.org/iwetzxku9/IMG_20140818_142443.jpg[/IMG] However, my T…

    ... PSU to power a ZX81 if you make up a simple 2.1mm ...
    rune rune August 2014 Sinclair Miscellaneous
  • ZX81 Power SupplyI have a ZX81 with the original 0.7A power supply. I know that this has trouble running many add-ons and was seeking advice on a suitable replacement…

    ... could just cut the existing 2.1mm power plug off, then solder ... ]PS other "9V" ZX Spectrum PSU are also suitable, but would ...
    1024MAK 1024MAK November 2014 Hardware
  • What to buy +2, +2A, +2B, +3??Hi all I've always wanted to buy a 128k Spectrum and I've seen some lately in eBay going for cheap. The 128K+ is expensive I understand because of…

    ... Spectrum 128k, ZX Spectrum +2 (grey) all use 9V DC ... s all use the same 2.1mm/5.5mm barrel power ... you can use a +2 grey PSU to power a 48k ...
    One version of the +2 (grey) does indeed have a ... 128k toasttrack and the grey +2), to reduce the interference to ...
    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)…

    ... 9V DC input is a 2.1mm ID, 5.5mm OD mini ... course you buy a new PSU and that has the correct ...
    1024MAK 1024MAK September 2017 Hardware
  • Troubleshooting my +2To put this in context: a while back (i.e. late last year and earlier this year) I was looking to put together a compilation of modern Spectrum games…

    ... 9V" DC power supply units (PSU) are [u]unregulated[/u]. ... /48k/plus/128k/+2 grey... The PSU for the ZX81 ... />
    Is the PSU plug original, or a replacement ... two common sizes, a 2.1mm pin with an outside plug ... will fit in a 2.1mm socket, but the electrical ...
    1024MAK 1024MAK October 2017 Hardware
  • Troubleshooting my +2To put this in context: a while back (i.e. late last year and earlier this year) I was looking to put together a compilation of modern Spectrum games…

    ... 9V" DC power supply units (PSU) are [u]unregulated[/u]. ... /48k/plus/128k/+2 grey... The PSU for the ZX81 ... unloaded...
    Is the PSU plug original, or a ... two common sizes, a 2.1mm pin with an outside plug ... latter will fit in a 2.1mm socket, but the electrical ...
    The Mighty Dopethrone The Mighty Dopethrone October 2017 Hardware
  • Features that never made it into the SpectrumAlthough kind of a Hardware question (a kind moderator might want to move it, I was 50/50 on where to post it, I don't mind) , I was thinking about t…

    ... launched, the majority of PSU’s with a 2.1mm barrel ‘DC’ power ...
    1024MAK 1024MAK September 2018 Sinclair Miscellaneous
  • Features that never made it into the SpectrumAlthough kind of a Hardware question (a kind moderator might want to move it, I was 50/50 on where to post it, I don't mind) , I was thinking about t…

    ... launched, the majority of PSU’s with a 2.1mm barrel ‘DC’ power ... effective short on the 'wrong' PSU but unless it was left ...
    spider spider September 2018 Sinclair Miscellaneous
  • Bit of fun - one change onlyI also posted this on another marque's forum (for their products) to see. Its just a bit of fun really. OK, if you could of made one change to a S…

    ... machines that use a 9V PSU should have used a diode ... have used a 5.5/2.1mm barrel power connector instead of ... .

    The ZX Spectrum+2 should have had joystick ports ...
    1024MAK 1024MAK December 2018 Hardware
  • What % of WOSSERS use "old school" tape loading when playing their Speccy games.My guess is .000000001% ( but I might be slightly out on this! ) Do people still enjoy doing it "the old way"?

    ... part, traditional. The external PSU is a conventional isolating ... DC from the external PSU. It then limits the ... DC with the correct 2.1mm power plug that is ... route, buy a suitable PSU from a company in ... from the external Sinclair ZX PSU. Meaning it will lower ...
    1024MAK 1024MAK September 2019 Chit chat
  • What % of WOSSERS use "old school" tape loading when playing their Speccy games.My guess is .000000001% ( but I might be slightly out on this! ) Do people still enjoy doing it "the old way"?

    ... uses a PC PSU instead of the original PSU.

    [ ... electrical safety of the replacement PSU. And that most devices these ... get a 9V PSU, but finding them with a 2.1mm power connector ... protection against a dodgy external PSU.

    [b][i] ...
    1024MAK 1024MAK September 2019 Chit chat
  • Onboard power jack type on ZXHello, i'm trying to find replacements for the barrel type power jack that resides on a speccy board. I have many speccys that the slightest wobble r…

    ... only found that its a 2.1mm female and nothing more....
    gtsamour gtsamour July 2010 Hardware
  • Dedicated Spectrum Emulation Machine Based on Raspberry PiI've mentioned this in another thread, so I thought I'd give it a thread of its own. I've wanted to build a dedicated Spectrum emulator for a long t…

    ... to make out of a 2.1mm sheet of aluminum.

    Jamesbeat Jamesbeat October 2012 Emulators
  • Spectrum+ PiInspired by Hammer09'sd weekend project http://www.worldofspectrum.org/forums/discussion/comment/832342/ and Tynemouth Software's Spectrum+ Pi https:…

    ... to be a plugable, 2) I've used a ... jpg[/IMG][/URL]
    2 Underside of keyboard/upper half ... .photobucket.com/albums/k70/ElweGreymantle/2.jpg[/IMG][/URL]
    ... showing 1) Pi fitted, 2) HDMI female-Male panel connector ... 5) a 5.5 x 2.1mm female to male Micro USB ...
    JasonUK JasonUK October 2015 Sinclair Miscellaneous
  • Spec 128 in the U.S.So I have a Spectrum 128 and I am in the U.S. I need to get a power supply that will work with this unit. What can I do here? I should be able to …

    Yes, the polarity has to be correct. It's a 2.1mm power plug you need, centre pin is NEGATIVE, the outside barrel is POSITIVE. 1A would probably be fine but I'd double that as the supply that comes with the machine should be rated at 1.8A.
    DEATH DEATH December 2005 Hardware
<1234567…34>

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