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Search Again :: Adv Search 862 results in 0.001s
<1…23242526272829>
  • 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"?

    ... your Spectrum has had the 7805 replaced with a DC/DC ...
    1024MAK 1024MAK September 2019 Chit chat
  • Finding a good (UK) external switch mode power supply for the basic 48k and 128k ZX SpectrumsThis idea has probably "done the rounds" by now . I think I have heard about it a bit late . This thread with look at replacing the original "heavy l…

    ... and a new voltage regulator (7805 or DC/DC converter).
    7805 three terminal voltage regulator with ...
    1024MAK 1024MAK September 2019 Hardware
  • Finding a good (UK) external switch mode power supply for the basic 48k and 128k ZX SpectrumsThis idea has probably "done the rounds" by now . I think I have heard about it a bit late . This thread with look at replacing the original "heavy l…

    ... Spectrum on its own. The 7805 will be happy with anything ...
    Ast_A_Moore Ast_A_Moore September 2019 Hardware
  • Finding a good (UK) external switch mode power supply for the basic 48k and 128k ZX SpectrumsThis idea has probably "done the rounds" by now . I think I have heard about it a bit late . This thread with look at replacing the original "heavy l…

    ... circuitry with the three terminal 7805 replacement DC/DC converter regulator ...
    1024MAK 1024MAK September 2019 Hardware
  • Finding a good (UK) external switch mode power supply for the basic 48k and 128k ZX SpectrumsThis idea has probably "done the rounds" by now . I think I have heard about it a bit late . This thread with look at replacing the original "heavy l…

    ... Spectrum on its own. The 7805 will be happy with anything ... the +9V straight into a 7805 voltage regulator chip (or equivalent ...
    1024MAK 1024MAK September 2019 Hardware
  • Modifying a speccy to +5v only operation.Just a thought experiment so far. Let's say i wanted to make a more resilient spectrum by getting rid of the DC-DC converter circuit. This would remo…

    ... would fit a Traco 5v 7805 switch mode replacement, i guess ... Traco in place of the 7805, you can then feed the ...
    1024MAK 1024MAK October 2019 Hardware
  • Help request for an injured Issue 4A spectrumHi folks, I'm hoping to resurrect an issue 4A spectrum that has been in my hoard for a couple of decades since buying it for spares. Someone ha…

    ... regulator! Do you mean the 7805 5V voltage regulator?

    1024MAK 1024MAK January 2020 Hardware
  • The Complete List Of The Causes Of Lower Ram Failure?Well the aim is to get a comprehensive list.I ask this because I know very little about it . I know that failure of "power supply" related capacitors…

    ... ,
    [*] Damaged due to the 7805 output voltage going above 5 ...
    1024MAK 1024MAK March 2020 Hardware
  • Microdrive repair - GREAT NEWS!Microdrive repair facts: We know (almost) pure alcohol and cotton swabs are needed a lot to clean the Microdrive head. We know cartridges degrade, so…

    ... though I have changed the 7805, output voltage is 2.75V ...
    payty payty April 2020 Hardware
  • ZX Spectrum 48K Issue 4B No soundHi, I have a ZX Spectrum 48K Issue 4B without sound. I tested the ULA on another Spectrum and works fine, tested the speaker and it has the correct …

    ... 's connected to Input of 7805.
    I don't know ...
    Ast_A_Moore Ast_A_Moore May 2020 Hardware
  • Spectrum 128k advice neededHi, I'm new to this forum and the spectrum world. I have this spectrum "toastrack" that was working fine until today. It doesn't boot anymore, it s…

    ... of wave when measuring the 7805. On my multimeter this regulator ...
    gleegum gleegum July 2020 Hardware
  • 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…

    ... onwards, the heatsink for the 7805 voltage regulator was moved from ...
    1024MAK 1024MAK July 2020 Hardware
  • doubt about swapping ULA in an issue 2 boardIs it possible to swap a 6C001E-6 ULA type with a 5C112E ? I have this issue 2 board that is not booting, it shows me a black border with horizont…

    ... RAMs), 4.8V at the 7805.

    RAM IC's ...
    gleegum gleegum September 2020 Hardware
  • The "Fun" of old equipment...Warning to others with the Alphacom 32.So I manage to slowly rebuild my spectrum, and a part of that is getting a new printer. The Brother printer I once had is no more, and I don't want t…

    ... transients so much, and the 7805 inside the printer should be ...
    cj7hawk cj7hawk March 2021 Hardware
  • More "What could have been"... The Z280.So in chasing up the Loki specs, I happened upon some parallel developments... And had Sinclair gotten to make the Loki, there could have been some i…

    ... a Spectrum? Not while the 7805 was available.... Even if it ...
    cj7hawk cj7hawk September 2021 Hardware
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …

    ... you haven't replaced the 7805 with a switching regulator as ...
    guesser guesser October 2021 Hardware
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …

    yeh def always replace the 7805... its amazing how much heat them buggers create ..
    mark8bit mark8bit October 2021 Hardware
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …

    ... "]yeh def always replace the 7805... its amazing how much heat ...
    1024MAK 1024MAK October 2021 Hardware
  • 48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …

    ... will be hotter if a 7805 is in use… The heat ... output from the 7805 will be affected by the ...
    1024MAK 1024MAK October 2021 Hardware
  • Keyboard shorting out on RF modulator.OK, this is the mos unusual fault I've diagnosed this year. A keyboard with a new membrane was failing sometimes, and preventing the computer from go…

    ... or the heatsink (for the 7805) (issue 3 and higher boards ...
    1024MAK 1024MAK December 2021 Hardware
  • How many interfaces can be paired up together (as a combo) on the Speccy's back edge connector?Well some would say none as it puts too much of a power strain on the Speccy's power supply . So ignoring this aspect the same question can be asked …

    ... removed the heatsink from the 7805 and cut it up for ...
    1024MAK 1024MAK January 2022 Hardware
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