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<1…15161718192021…34>
  • New speccy modelThe 48k toastrack ;) [img]http://alistairtesting.no-ip.org/48k-toastrack.jpg[/img]

    ... ;533586]Wow sounds like your 48k toastie and my Laptop are ... in seconds using the zx power supply as I've discovered to ...
    guesser guesser May 2011 Hardware
  • 48k dots appear but not with CUB monitorToday I tried out an issue 3 and an Issue 2 with the CUB monitor, to my surprise they both worked flawlessly, now before when I tried them on any oth…

    The Opus power supply, regarding powering the Spectrum, exist ... LM317 regulator (REG1) that 'makes' 12V for the diskdrive(s), and ... therefore must be higher than 12V. (The white wires, REG2 plus ... is not only providing the power, but also adds a certain ...
    roko roko June 2011 Hardware
  • Dead 128 ToastrackHi! I bought 128 toastrack motherboard and seller said it's working. Maybe it was when he sent it but motherboard was only put into envelope. So it …

    Yes I have working power supply because I have working 128.
    As I said I'm not an expert so is the regulator same in 48K and 128K? I have spare regulators for 48K (printed 7805) and in 128's regulator has print 7805CSP.

    Ippe
    lillaolle64 lillaolle64 June 2011 Hardware
  • Challenge Sprint 4x tape recorderHi, I noticed a [url="http://www.worldofspectrum.org/infoseekid.cgi?id=1000051"]Challenge Sprint[/url] on eBay, and checked out the WoS entry for it…

    ... unit has no power plug. It takes power supply from the rear bus ... game I loaded into my 48K Spectrum, back in 1984 :)
    mcleod_ideafix mcleod_ideafix August 2011 Hardware
  • Commodore 64 - First time trying - REVIEW & Pictures!Right, so the 2nd hand shop was selling this Commodore and accessories. So I decided to buy it, as I've never had a Commodore and this is my first ti…

    ...
    all the usual wires/power supply e.t.c.

    the 48K Rubber keyboard version even looks ... from the keyboard on a 48K, but on +3, forget it ...
    Alien 8 Alien 8 August 2011 Sinclair Miscellaneous
  • RECOM pin compatible DC-DC 7805 regulator replacementsFinally got myself sorted out now. If you want to purchase chips send me an email to [email]alistair@alistairsserver.no-ip.org[/email] with your payp…

    ... /> Is this regulator okay for 48K Spectrums with additional interfaces such ... which I suspect requires more power than the divide. I run ... a normal 48k PSU, the RECOM chip works with a power supply voltage ... on the chip while the 48k and addons are running, ...
    guesser guesser September 2011 Hardware
  • Using an external 3" drive in PCI have an Amstrad FD1 drive (minus the DDI-1 interface sadly), and on another thread, fog alluded to the idea that I might be able to connect it to m…

    ... />
    [B]1. Power Supply[/B]

    The ... while the standard FDD Power connector is mechanically compatible ... will send a juicy +12v's up the +5v ... the outer most pins (+12v with +5v) obviuosly thats ... PC floppy power molex and then swaps the +12v and ...
    Zetr0 Zetr0 October 2011 Hardware
  • Alternative power supply for a +2B?Hi friends, On impulse, I recently bought a ZX Spectrum +2 (unit only, untested) on eBay, thinking that the cables (specifically the power supply) o…

    ... ;rt=nc&_nkw=hdd+power+supply&_trksid=p3286.c0.m14 ... shipment.

    +5V and +12V, so will work with +2A ... /> I had an Atari ST supply with -12V once.
    bverstee bverstee October 2011 Hardware
  • Second Hand SpectrumHi just joined the Forum. I have picked up a Spectrum at a s/h shop and would like some advice please. I have had two ZX81's packed away for severa…

    ... the model type i.e. 48K etc. The PC board ... either a 16K or a 48K.
    You can tell ... 16K Spectrum, or a 48K Spectrum with a bad memory ... model came with the original power supply which indicates that the ... a external 5v (I think) power source.
    Q. Would ...
    Spirantho Spirantho October 2011 Hardware
  • Various software & hardware for sale.After having a sort out in the loft I've discovered a few things to get rid of: [SIZE="1"]SINGLE CASSETTE SIZE CASES. (all with inlays and instructi…

    ... recorder
    sinclair 128 (toastrack) power supply
    protek joystick interface

    [SIZE="1"]48K Sinclair ZX Spectrum (with power supply, TV lead, audio ... with load/save switch & power switch)

    Cambridge Computing ...
    Neil L Neil L November 2011 Sales
  • Dead 128K heatsinkUnfortunately my 128K heatsink died suddenly and with no apparent reason. I had the Kempston Pro interface connected and when i powered it on the ztx…

    ... overload (read shortcut) of the 12V switching convertor. This supposed problem ... close harmony. As soon as power is switched on, Tr4 will ... hot (and there is no +12V at the 'hot' end of ... problem is in the switching power supply. Otherwise it will be in ...
    roko roko November 2011 Hardware
  • Dead 128K heatsinkUnfortunately my 128K heatsink died suddenly and with no apparent reason. I had the Kempston Pro interface connected and when i powered it on the ztx…

    ... case. after excluding the whole 12V powered cirquits and after replacing ... and every component of the 12V power cirquit without success, finally the ... it with one from a 48k spectrum as a final hope ...
    gtsamour gtsamour November 2011 Hardware
  • Unboxing my old SpeccysToday I dug out my old collection of computers from the bygone age. My ZX81 fired up fine, but it looks like the keyboard membrane is goosed, as on…

    ... . One which has now died (48k which had a duff keyboard ... (another 48k), thankfully I have another boxed 48k which has a power supply which ...
    JohnnyJman JohnnyJman November 2011 Hardware
  • +3 No power LED, disc motor continually spinning..and no display. I searched the posts and i found a really old thread going back to 2004 where fuses in the psu were discussed, checked em in this an…

    ... the board under D6 +12v which leaves a blue, ... must be -5v and -12v and are positioned either side ... 5v on Red, 12v on yellow, -12v on blue and 0v ... on the ATX supply are the same. -12v blue, 12v yellow, 5v ... a black wire. The power supply should start up and you ...
    guesser guesser December 2011 Hardware
  • Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…

    ... R57 I also modified the power supply circuit (resistor change and addition ... the memory corruption instead? The 12V and -5V (and +5V) lines ... examining them and is the power supply modification likely to have much ... one or more of the power lines and that's what ...
    Zorn Zorn December 2011 Hardware
  • Power Brick ProblemDear all, i was just Powering up a 48K Rubber Key Speccy using two differnt power bricks. First one from my issue 2 Speccy, second one from an issue…

    ... up a 48K Rubber Key Speccy using two differnt power bricks. First ... caps.

    With first power supply the Speccy works well no ... first 5 minutes, until the power brick has warmed up. Then ...
    LCD LCD January 2012 Hardware
  • +2A not showing a pictureThis video explains the problem: [url]http://www.youtube.com/watch?v=1lySPQu7RbI[/url] I can't tune a better picture with the RF and the RGB only g…

    Could be a faulty power supply, that fails to generate a decent 5V and 12V supplies.
    mcleod_ideafix mcleod_ideafix January 2012 Hardware
  • Colour blocks on displayHi all, I have just acquired another Sinclair product, my first one being a C5, it's a 48K ZX Spectrum. It shows colour blocks on the display when p…

    ... IC6-IC13 is pulling the +12V rail down.

    [QUOTE ... I'd isolate the the power supply from the lower RAM, either ... measured to have shorted their power connections so it may take ... happens or you power on without being sure the power supply voltages are ...
    Zorn Zorn February 2012 Hardware
  • Just bought a +3 and i think it's broken :(Please help... my spectrum +3 arrived today and I plugged it in, the red light came on and the disk drive made a little noise. So I then set the T…

    ... getting the +12v but not the +5v from the power supply (Had the ... FDD is just supplied with +12v, the motor turns on). Does ...
    spodula spodula February 2012 Hardware
  • Just bought a +3 and i think it's broken :(Please help... my spectrum +3 arrived today and I plugged it in, the red light came on and the disk drive made a little noise. So I then set the T…

    ... getting the +12v but not the +5v from the power supply (Had the ... FDD is just supplied with +12v, the motor turns on). Does ...
    GaZx GaZx February 2012 Hardware
  • Just bought a +3 and i think it's broken :(Please help... my spectrum +3 arrived today and I plugged it in, the red light came on and the disk drive made a little noise. So I then set the T…

    ... getting the +12v but not the +5v from the power supply (Had the ... FDD is just supplied with +12v, the motor turns on). Does ...
    Arda Arda February 2012 Hardware
  • RFC: Hardware Documentation ProjectI've noticed quite a few threads recently about missing schematics and suchlike. I've also been thinking about the low quality of some of the schemat…

    ... grey computer to boot into 48K mode to help finding a ... ]

    Noise in 12V rail supply that affect the computer, as ... />
    Modern replacement for the 48K internal speaker:
    [url]http ... DIY method to build a 48K keyboard membrane:
    [url]www ...
    mcleod_ideafix mcleod_ideafix March 2012 Sinclair Miscellaneous
  • ZX Spectrum TowerHi all, i am working on a ZX Spectrum 48K build in a PC tower case. Is there anyone who did it before? I have some questions duo the PSU. I have to g…

    ...
    You may find the 12V supply is OK as-is so ... t exceed 12V. The Spectrum has an internal power supply consisting of ... a small switch mode supply circuit ... that makes a regulated -12v/+12v/-5v ...
    Winston Winston March 2012 Hardware
  • ZX Spectrum TowerHi all, i am working on a ZX Spectrum 48K build in a PC tower case. Is there anyone who did it before? I have some questions duo the PSU. I have to g…

    ... 609031]You may find the 12V supply is OK as-is ... doesn't exceed 12V. The Spectrum has an internal power supply consisting of ... a small switch mode supply circuit ... even with a standard 9V power supply. There's a thread here ...
    unholy unholy March 2012 Hardware
  • TR4 is goneMy TR4 transistor is burned. Can I replace this transistor with a TIP31B or C ? My 4116 RAM ic?s are showing +0.05V, +5V and +8.49V... :) My Spectru…

    ... few hundred k ohms.
    12V (pin 8 ) - should read 1 ... been powered without all their supply voltages present. If I were ... the 4116s or cut their power supply tracks and get the voltage ...
    Zorn Zorn April 2012 Hardware
  • Does a spectrum +2 power supply work on a +3?tiny question, does a spectrum +2 power supply work for a +3?

    ... does a spectrum +2 power supply work for a +3?[/ ... 2A power supply gives only 200mA for +12v. The spectrum +3 power supply gives ... 700mA. It needs more power ...
    The scheme of both power supply

    [url]http ...
    Jose_Leandro Jose_Leandro April 2012 Hardware
  • Does a spectrum +2 power supply work on a +3?tiny question, does a spectrum +2 power supply work for a +3?

    ... it upto a PC ATX power supply - perhaps even a 60watt ... Board-12V-120W-DC-DC-MINI-ITX-ATX-PC-Power-Supply-/220947643658 ... ?pt=LH_DefaultDomain_3&hash=item3371817d0a]Pico PSU Board 12V ... -60W-5A-DC-DESKTOP-POWER-SUPPLY-12v-PSU-5-5mm-x- ...
    Zetr0 Zetr0 April 2012 Hardware
  • Zx 48k after the ic7805 other problemHi everyone, i am Tiago from Portugal, and i am trying to repair a Zx Spectrum 48K. the machine didn't do anything, no image, no sound, nothing. The…

    ... 5V(9), -5V(1) and 12V(8 ) are all present at ... />
    If the -5V or 12V are missing then there's ... isolate the 4116s from their power supply lines (cut tracks or remove ... of them have shorted their power supply connections.

    If all ...
    Zorn Zorn May 2012 Hardware
  • +3 PSUHiya. Having moved house 3 times since using my +3, I appear to have lost the power supply. I don't suppose anyone has a spare they would like to s…

    ... an ATX PSU, but the -12V worried me a little. As ... far as I know -12V was removed from the ATX ... years ago. Certainly every ATX power supply I see at work doesn ... port on the +3 needs -12V but I don't know ...
    MikeW MikeW May 2012 Wanted
  • +3 PSUHiya. Having moved house 3 times since using my +3, I appear to have lost the power supply. I don't suppose anyone has a spare they would like to s…

    ... that nothing else uses the -12v.

    However if you ... switch rather than a standby power supply and input lines etc.
    guesser guesser May 2012 Wanted
<1…15161718192021…34>

Latest Posts

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    John Elliott on April 21
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