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  • Help and Advice with DivIDE PlusHi Guys, Really struggling to get any reliable actiivty with my DivIDE Plus and am looking for some pointers. I am trying to get it to work with on…

    ... PSUs and have the following voltages:
    [code]
    PSU Unloaded ...
    BloodBaz BloodBaz September 2010 Hardware
  • 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…

    ... do is check *all* supply voltages, and easiest place to do ... as modulator case. Measure other voltages with this point as ground ...
    RetroTechie RetroTechie September 2010 Hardware
  • 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…

    ... the tip. I measured the voltages of all the chips in ...
    Oldskool Oldskool September 2010 Hardware
  • Possible Move to USA - Advice please.It is possible that I may be getting a Job on Oregon USA. I wondered what advice the expats of WOS might give me. [LIST] [*]For example is living …

    ... into a US socket (the voltages etc. are the same for ...
    Winston Winston September 2010 Chit chat
  • Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…

    ... the Wikipedia page for RS232 voltages:

    [url]http://en ...
    ASM ASM October 2010 Hardware
  • Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…

    ... the Wikipedia page for RS232 voltages:

    [URL]http://en ...
    guesser guesser 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 …

    ... chips better get the internal voltages (-5V, 5V, 12V) checked ...
    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 …

    Voltages are probably ok, because 5V ...
    willcz willcz 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…

    ... ) there. Separated circuits, so 2 voltages > 2 diodes > 2 ... ; 2 regulators.
    The AC voltages should be in the range ...
    roko roko October 2010 Hardware
  • Will +2 Powersupply work on +3 speccy?I've just ordered a +3 Spectrum without the power supply. I have a +2 (not +2a) power supply and wondered if this would be ok to use with my new +3?

    ... +2B use the same supply voltages so the power supplies are ...
    guesser guesser October 2010 Hardware
  • Will +2 Powersupply work on +3 speccy?I've just ordered a +3 Spectrum without the power supply. I have a +2 (not +2a) power supply and wondered if this would be ok to use with my new +3?

    ... +2B use the same supply voltages so the power supplies are ...
    Alien 8 Alien 8 October 2010 Hardware
  • +2 power not working. Need helpHi folks, I'm hoping someone may be able to point out what could be wrong/needs fixing here. One of my +2's had a loose RF modulator. The 5v wire w…

    ... again and check if all voltages are available and OK. Then ...
    LCD LCD October 2010 Hardware
  • +2 power not working. Need helpHi folks, I'm hoping someone may be able to point out what could be wrong/needs fixing here. One of my +2's had a loose RF modulator. The 5v wire w…

    ... reconnect the power and check voltages. I'm not that familiar ...
    guesser guesser October 2010 Hardware
  • +2 power not working. Need helpHi folks, I'm hoping someone may be able to point out what could be wrong/needs fixing here. One of my +2's had a loose RF modulator. The 5v wire w…

    ... />
    After that, check supply voltages. Possibly the +5V regulator was ...
    RetroTechie RetroTechie 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 …

    [QUOTE=willcz;484833]Voltages are probably ok, because 5V ...
    csmith csmith October 2010 Hardware
  • Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …

    ... , thus protecting it from dangerous voltages.

    [QUOTE=guesser;487902 ...
    mcleod_ideafix mcleod_ideafix October 2010 Hardware
  • Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …

    ... , thus protecting it from dangerous voltages.
    [/QUOTE]
    The Gate ...
    guesser guesser October 2010 Hardware
  • Connecting a ZX Interface 1 to a +2AI have a customer with a Spectrum +2A computer - he has a working ZX Interface 1 and microdrive which has been tested with his +48 machine. However,…

    ... different, supplying the required regulated voltages instead.
    guesser guesser November 2010 Hardware
  • ZX80, ZX81 and Z88.I have huge lot of questions about these computers. 1. Are they portable computers all? I mean built in screen (my friend from England says yes, wit…

    you mean the screen flicker ? that was fixed in the zx81

    it was to do with the voltages or something? not sure

    don't forget.. get a ram pack or upgrade the memory if your buying one
    fog fog November 2010 Hardware
  • ZX48K: KILLING keyboard membrane?Hi. My friend - JAD - decided to get back from C64 to ZX Spectrum 48K after some break (that's the man who coded this program [url]http://www.pouet…

    ... 4116 RAM and test the voltages to the supply pins. If ... the voltages are OK, it's still ...
    Winston Winston November 2010 Hardware
  • 48k rubber key screen corruption[IMG][URL=http://img195.imageshack.us/i/img7398g.jpg/][IMG]http://img195.imageshack.us/img195/5563/img7398g.th.jpg[/IMG][/URL] Uploaded with [URL=htt…

    ... always start with checking supply voltages...!!! (and look further only when ...
    RetroTechie RetroTechie December 2010 Hardware
  • 48k rubber key screen corruption[IMG][URL=http://img195.imageshack.us/i/img7398g.jpg/][IMG]http://img195.imageshack.us/img195/5563/img7398g.th.jpg[/IMG][/URL] Uploaded with [URL=htt…

    there's a definite "border" area there isn't there, so that means the ULA is probably fine.

    have you gone through the procedure in the repair manual checking voltages?
    guesser guesser December 2010 Hardware
  • 48k rubber key screen corruption[IMG][URL=http://img195.imageshack.us/i/img7398g.jpg/][IMG]http://img195.imageshack.us/img195/5563/img7398g.th.jpg[/IMG][/URL] Uploaded with [URL=htt…

    ... the equation. But again: supply voltages first.
    RetroTechie RetroTechie December 2010 Hardware
  • 48k rubber key screen corruption[IMG][URL=http://img195.imageshack.us/i/img7398g.jpg/][IMG]http://img195.imageshack.us/img195/5563/img7398g.th.jpg[/IMG][/URL] Uploaded with [URL=htt…

    ... =RetroTechie;498366] But again: supply voltages first.[/QUOTE] Indeed! Between ULA ...
    roko roko December 2010 Hardware
  • The Idiot's guide to 3.5 inch floppies on a +3All help gratefully received, including blow by blow instructions and tutorials. I am interseted in adding a floppy drive (3.5 inch) to my +3 as an …

    ... be tempted to use needed voltages from some other connector on ...
    orange orange December 2010 Hardware
  • Issue 2 Speccy faultHi Guys, I'm really hoping someone can help me with a fault that has just developed on my issue 2 speccy. After perservering for some time with usi…

    ... 's wrong:

    1. Voltages must be checked (easiest to ... ). The 4116 RAM requires 3 voltages. The forum has details on ... />
    3. If all the voltages are correct, the next step ...
    Winston Winston December 2010 Hardware
  • Upgrading 16k MemoryHi All I have a fully working issue 2 16k spectrum and a broken issue3 48k spectrum (It's showing the black and white bars and some flashing blocks)…

    ... I can't check the voltages yet, I'll buy one ...
    wozname wozname December 2010 Hardware
  • broken 48K, strange screenwell I finally socketed all lower 16K ram chips, (8 of them in a row near corner, not those 4 in two rows) and replaced them with new ones but it did…

    ... /> edit: I just tested the voltages on RAM chips and they ... ?[/QUOTE]

    if the voltages are wrong then you'll ...
    guesser guesser December 2010 Hardware
  • broken 48K, strange screenwell I finally socketed all lower 16K ram chips, (8 of them in a row near corner, not those 4 in two rows) and replaced them with new ones but it did…

    ... board. I soldered them and voltages are fine now. graphics is ...
    orange orange December 2010 Hardware
  • Upgrading 16k MemoryHi All I have a fully working issue 2 16k spectrum and a broken issue3 48k spectrum (It's showing the black and white bars and some flashing blocks)…

    ... so I could check the voltages as per: [url]http://www ...
    wozname wozname December 2010 Hardware
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