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Search Again :: Adv Search 1000 results in 0.010s
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  • +3 ProblemsI have been having a few problems with my +3 and I am wondering if anyone can help or give me some advice: 1. I have 2 blank disks which I have save…

    ... signal, when you put +12V on it, it tells your ... 3 has 2 pins with +12V on it, both connected through ... make cable that connects original +12V to SCART pin 8 (function ... pin in RGB socket to +5V through a [I]lower[/I ... suggestion, and check if +12V pin on the +3's ...
    RetroTechie RetroTechie May 2010 Hardware
  • damaged spectrum+ (blinking squares)Hi, Sorry for my poor english, but I couldn't find on family forums any remedy for my hardware problem with my first speccy in my life :) I've bought…

    ... 1 to pin 16 is -5v
    voltage of pin 8 ... to pin 16 is +12v
    voltage of pin 9 ... to pin 16 is +5v
    They're correct. What ...
    treneiro treneiro May 2010 Hardware
  • Some ROM/EPROM questions...I've got a ZX Spectrum +, a +2A and +3 computers, and I've been using +3e project ROMS for a while in my +3. I was thinking about using an EEPROM or…

    ... mentions 14V for erase, and 12V for programming - maybe there's ... 28-pin housing that use 5V only. :-?

    [QUOTE]- One ...
    RetroTechie RetroTechie June 2010 Hardware
  • +3 needs putting out of its misery[URL="http://cgi.ebay.co.uk/SINCLAIR-ZX-SPECTRUM-3-128K-FDD-GAMES-CLASSIC-VINTAGE-/270590074074?cmd=ViewItem&pt=UK_VintageComputing_RL&hash=item3f006…

    ... is delivering 5V to the system but fails on the 12V the ...
    joefish joefish June 2010 Chit chat
  • +3 needs putting out of its misery[URL="http://cgi.ebay.co.uk/SINCLAIR-ZX-SPECTRUM-3-128K-FDD-GAMES-CLASSIC-VINTAGE-/270590074074?cmd=ViewItem&pt=UK_VintageComputing_RL&hash=item3f006…

    ... is delivering 5V to the system but fails on the 12V the ...
    Metalbrain Metalbrain June 2010 Chit chat
  • grey +2 psu on an original 128?I have a 128 and both +2's.. a / b.. I notice one PSU is the same as the 128 , just grey and the 128 PSU I have is, well I will get it looked at .. i…

    ... : 5V 2A, +12V 700mA, -12V 50mA
    ZX+2A/B: 5V 2A, +12V 200mA, -12V 50mA ...
    TMX TMX June 2010 Hardware
  • +3 needs putting out of its misery[URL="http://cgi.ebay.co.uk/SINCLAIR-ZX-SPECTRUM-3-128K-FDD-GAMES-CLASSIC-VINTAGE-/270590074074?cmd=ViewItem&pt=UK_VintageComputing_RL&hash=item3f006…

    ... is delivering 5V to the system but fails on the 12V the ...
    brownb2 brownb2 June 2010 Chit chat
  • testing if speccy is fully functionalHi, There is so much mention of T states but still confused. Does this mean if an instructin is out by a T-state or more then the speccy is faulty?…

    ... to hold to check the +5V/-5V/+12V lines though.

    Between ...
    Spirantho Spirantho June 2010 Sinclair Miscellaneous
  • Broken ZX Spectrum? :(Hi! I bought a 2nd hand ZX Spectrum half a year ago. It worked perfectly fine when I first tried it. I put it back in its box which it was sent in, …

    ... 'll need to check the -5V and +12V lines for me...
    Spirantho Spirantho July 2010 Hardware
  • Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …

    ... (x) pin(y) to +12V" (instead of+5V) I do a second ... see no reason for using +12V there, the 'intermediary' resistor offers ...
    roko roko July 2010 Hardware
  • Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …

    ... ', as it is positioned between +5V (large track) and A0 (Z80 ... is low). BTW: indeed not 12V but 5V!!

    Edit: Yes ...
    roko roko July 2010 Hardware
  • Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …

    ... Z80's A0 line and +12V. Indeed the repair guide (page ... 4.5) says 12V, where I think +5V should be the max ... resistor/diode patch using 5V instead(!) of 12V, R=3K9, just for ...
    roko roko July 2010 Hardware
  • Broken ZX Spectrum? :(Hi! I bought a 2nd hand ZX Spectrum half a year ago. It worked perfectly fine when I first tried it. I put it back in its box which it was sent in, …

    ... sure you miss the 12V and the -5V.

    Measure the ... a voltage of 11 ... 12.5V.
    If this is ok ...
    ingo ingo August 2010 Hardware
  • Broken ZX Spectrum? :(Hi! I bought a 2nd hand ZX Spectrum half a year ago. It worked perfectly fine when I first tried it. I put it back in its box which it was sent in, …

    ... sure you miss the 12V and the -5V.

    Measure the ... a voltage of 11 ... 12.5V.
    If this is ok ...
    josteint josteint August 2010 Hardware
  • newbie: on/off and video outputHello, having a lot of 8bit computer I tried the scart cables I have one gave me a scrolling image the other one gave me a good picture but no sound …

    ... having the switch on +5V and +12V would give less 'shock' when ...
    orange orange August 2010 Hardware
  • The components of death!One problem thats slowly rearing its head these days,is our beloved machines like amiga are slowly suffering from battery or capicator leak,it is not…

    ... where the 5V supply is still working but the 12V supply is ...
    joefish joefish August 2010 Chit chat
  • The components of death!One problem thats slowly rearing its head these days,is our beloved machines like amiga are slowly suffering from battery or capicator leak,it is not…

    ... where the 5V supply is still working but the 12V supply is ...
    JACK98 JACK98 August 2010 Chit chat
  • Speccy+2/2A psu difference?Just curious,do speccy+2/2a use the same psu or are they slightly different?.

    ... DIN connector carrying three voltages: +5V, +12V and -12V.
    mcleod_ideafix mcleod_ideafix August 2010 Hardware
  • Spectrum +2a / +3 SCART LeadsEvening all, Over the past week or so I've tried two different Spectrum RGB SCART leads from two different Ebay sellers, on a Spectrum+2A and a Spec…

    ... takes up to 12V input voltage. If this is missing, sometimes you ...
    RetroTechie RetroTechie September 2010 Hardware
  • Spectrum +2a / +3 SCART LeadsEvening all, Over the past week or so I've tried two different Spectrum RGB SCART leads from two different Ebay sellers, on a Spectrum+2A and a Spec…

    ... takes up to 12V input voltage. If this is missing, sometimes you ... you need both signals. 8 .. 12V on pin 8 (a voltage ...
    ingo ingo September 2010 Hardware
  • Help me understand ZX RGB signal (long)This will be a long post so please bear with me and most importantly help me. I have a 128K+ and +2A that I'm trying to get working with my 15kHz RG…

    ... the non-working cable is missing an input on SCART PIN ... RetroComputerShack and it's also missing the PIN 18 connection. I ... 128K doesn't have the +12V lines and I may have ...
    pkupcik pkupcik September 2010 Hardware
  • Help me understand ZX RGB signal (long)This will be a long post so please bear with me and most importantly help me. I have a 128K+ and +2A that I'm trying to get working with my 15kHz RG…

    ... /> try it with battery or +5V from PSU (adding a resistor ... tried connected a new 1.5V battery to PIN 16 (+) and ... it needs more than 1.5V. I will try again with ... I'll temporarily take the +12V with R150 resistor from +2A ...
    pkupcik pkupcik September 2010 Hardware
  • Help me understand ZX RGB signal (long)This will be a long post so please bear with me and most importantly help me. I have a 128K+ and +2A that I'm trying to get working with my 15kHz RG…

    ... correct myself. Attaching the 1.5V battery did solve the problem ... drops. I also tested connecting +12V with R180 resistor from my ... to have a regular 1.5V battery connected to the cable ...
    pkupcik pkupcik September 2010 Hardware
  • The Sadness of my Decaying Speccies.I've been avidly collecting ZX Spectrums since the late 90's and whilst at the time of the late 90's and early millennium my Spectrums and associated…

    ... 5v supplies, and the -5v must turn off last. If +12v and +5v ... are supplied before -5v, internal biasing conditions ... the +5v arrives some microseconds before the +12v and -5v supplies ( ... shorting the -5 or +12v outputs at the edge ...
    Winston Winston September 2010 Sinclair Miscellaneous
  • Help with broken SpectrumHi There, Just received a ZX Spectrum computer. It's an issue 3B (48k version). When I power it up (9V centre pin -V) nothing happens. It's complete…

    ... (upper left) = -5V
    Pin 8 (lower left) = +12V

    And ...
    RetroTechie RetroTechie September 2010 Hardware
  • designing a computerHi everyone! I am designing a 4 bit computer and i need some advice, is this a good instruction set? [CODE] BINARY OPCODE DESCRIPTION 00000 nop…

    ... pile of LEDs and a 5v supply. (My first digital electronics ... but that would have been missing the point. The nixie display ...
    Winston Winston September 2010 Chit chat
  • zx spectrum +2 troubleshootingHi There I am new here and I need some advise as to where to look for issues on my zx spectrum +2 it was working fine this morning .. then while pl…

    ... /> Check for the presence of 12V at the TEA2000.

    5V, your computer should give you ... -to-SCART cables use the +12V voltage to switch the RGB ... sets. So check first the +12V voltage.
    mcleod_ideafix mcleod_ideafix October 2010 Hardware
  • zx spectrum ULAis the ULA in the 16K the same as in the 48K could you take the 16K ULA and place it in a 48K I ask this because i have a speccy thats dogy with th…

    ... , and taking with it the 12v and -5v supply, and subsequently the ... . If it isn't producing 12v and -5v, then the 4116 will ...
    csmith csmith October 2010 Hardware
  • Opus Discovery 1 problem insideHi folks, when I opened my Opus Discovery 1 I have probably wrecked a regulator that is connected to the mainboard by three cables. Regulator 2 is wi…

    Indeed thats LM317 at Conrad.
    Best thing to do would be measuring if 5V and 12V are present first, plus a thorough check of the PCB. Assuming that Spectrum is working OK on its own....
    roko roko October 2010 Hardware
  • ZX Spectrum+ Problem - Need help -Greetings guys, I bought one ZX Spectrum+. This is what displays on the TV: [IMG]http://d.imagehost.org/0371/17102010_001.jpg[/IMG] When I switch …

    ... better get the internal voltages (-5V, 5V, 12V) checked.
    roko roko October 2010 Hardware
<1…17181920212223…34>

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