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Search Again :: Adv Search 1000 results in 0.002s
<1…11121314151617…34>
  • +3 - beeper sounds but no AY musicHi guys I am repairing a plus 3 revision 2 board that had no sound at all. Using schematics from https://zxnet.co.uk/spectrum/schematics/ I manage…

    ... connectors].
    Any of the electrolytic capacitors that are used for decoupling ... smaller ceramic 22nF/47nF/100nF capacitors (used for decoupling, that is ...
    1024MAK 1024MAK July 2019 Hardware
  • 48K Issue 3B slowly fading over 15-20 seconds, capacitor gets hot.Hi folks, Recently my much-modified* RAM testing 48K board failed with a hot/burny smell so I turned it off quickly for looking at later. Thinking…

    None of the electrolytic capacitors should get hot. The one ...
    1024MAK 1024MAK August 2019 Hardware
  • 48K Issue 3B slowly fading over 15-20 seconds, capacitor gets hot.Hi folks, Recently my much-modified* RAM testing 48K board failed with a hot/burny smell so I turned it off quickly for looking at later. Thinking…

    ... board has never had the electrolytic capacitors replaced, then at a minimum ...
    1024MAK 1024MAK August 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…

    ... [list][*]ZX81 - only two electrolytic capacitors. Neither is critical. Replace on ... [*]Acorn Electron - No critical electrolytic capacitors on the main board. Replace ... Amstrad CPC464, CPC6128. No critical electrolytic capacitors on the main board. Replace ...
    1024MAK 1024MAK September 2019 Hardware
  • More on the Cheetah RampackI should be more careful about doing "repeats" ( I should learn some manners) but I could not find anything recent on these . But here is on WOS …

    ... pack if it has leaking capacitors as you can easily damage ... it up until all the electrolytic capacitors have been renewed and the ...
    1024MAK 1024MAK October 2019 Updates
  • 48K ZX Spectrum 48K Recap (Capacitors) Or Not?I have seen arguments "for an against" on this subject by some "high calibre" experts . So if the experts can differ on this question then my questi…

    ... a better condition?

    Electrolytic capacitors do have a limited lifespan ... serviced. Some of these are electrolytic capacitors.

    Finally, one ... will find stories about bad electrolytic capacitors killing laptops and PC motherboards ...
    1024MAK 1024MAK October 2019 Hardware
  • 48K ZX Spectrum 48K Recap (Capacitors) Or Not?I have seen arguments "for an against" on this subject by some "high calibre" experts . So if the experts can differ on this question then my questi…

    ... do recommend renewing the critical electrolytic capacitors in the power supply ... .

    The remaining electrolytic capacitors can be renewed if you ... modern better quality electrolytic capacitors even if the existing electrolytic capacitors have not ...
    1024MAK 1024MAK October 2019 Hardware
  • 48K ZX Spectrum 48K Recap (Capacitors) Or Not?I have seen arguments "for an against" on this subject by some "high calibre" experts . So if the experts can differ on this question then my questi…

    ... replace all the electrolytic capacitors on a 128K toastrack ... the axial electrolytic capacitors with new axial electrolytic capacitors. The only ... type for the remaining electrolytic capacitor, is simply ... selection of the old electrolytic capacitors using a ESR ...
    1024MAK 1024MAK October 2019 Hardware
  • 48K ZX Spectrum 48K Recap (Capacitors) Or Not?I have seen arguments "for an against" on this subject by some "high calibre" experts . So if the experts can differ on this question then my questi…

    ... "]

    The remaining electrolytic capacitors can be renewed if you ... modern better quality electrolytic capacitors even if the existing electrolytic capacitors have not ... picture even after all the electrolytic capacitors have been renewed.
    ...
    Renegade Renegade October 2019 Hardware
  • 48K ZX Spectrum 48K Recap (Capacitors) Or Not?I have seen arguments "for an against" on this subject by some "high calibre" experts . So if the experts can differ on this question then my questi…

    ... replace all the electrolytic capacitors on a 128K toastrack ... the axial electrolytic capacitors with new axial electrolytic capacitors. The only ... type for the remaining electrolytic capacitor, is simply ... selection of the old electrolytic capacitors using a ESR ...
    Renegade Renegade October 2019 Hardware
  • 48K ZX Spectrum 48K Recap (Capacitors) Or Not?I have seen arguments "for an against" on this subject by some "high calibre" experts . So if the experts can differ on this question then my questi…

    ... of cases, it’s only electrolytic capacitors that used a sub-standard ... not be a problem with electrolytic capacitors currently available from respectable suppliers ... difficult to tell if the electrolytic capacitors have been renewed on a ...
    1024MAK 1024MAK October 2019 Hardware
  • 48K ZX Spectrum 48K Recap (Capacitors) Or Not?I have seen arguments "for an against" on this subject by some "high calibre" experts . So if the experts can differ on this question then my questi…

    ... the soldering of the capacitors were often previously working ... to renew all the electrolytic capacitors because the owner has ... internet recommends ‘change all the capacitors’.

    I ... renew some components, like capacitors, please do practice until ...
    1024MAK 1024MAK October 2019 Hardware
  • Finding the issue.My sister recently found our old Speccy in her loft and having no interest in retro gaming promptly put it in the bin. Her husband text me and I res…

    ... Not likely to be an electrolytic capacitor fault then...
    ... renewing some of the electrolytic capacitors as preventive maintenance. But ... on failure. The capacitors used in all ZX ... well before the so called electrolytic capacitor plague occurred.
    1024MAK 1024MAK April 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…

    ... , so I would replace all electrolytic capacitors, and give both solder and ...
    Your Spec-chum Your Spec-chum July 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…

    ... ZX Spectrum 128K / toastrack, the electrolytic capacitors tend to age by the ... don’t normally leak. Leaking electrolytic capacitors is mainly due to capacitor ... critical to proactively replace the electrolytic capacitors. They can be replaced on ...
    1024MAK 1024MAK July 2020 Hardware
  • General PSU repair guidesNot Speccy related. I'm just looking for a guide as such as to where to begin with a power supply repair. Realise this is a bit of an odd thing to as…

    ... across the large high voltage electrolytic capacitor.

    Now with ... degradation of the “start up” electrolytic capacitor (on the primary side ... ) and the secondary / output side electrolytic capacitors.

    [b][i]Mark ...
    1024MAK 1024MAK August 2020 Chit chat
  • General PSU repair guidesNot Speccy related. I'm just looking for a guide as such as to where to begin with a power supply repair. Realise this is a bit of an odd thing to as…

    ... -by-side 1000uF 16v radial electrolytic capacitors, and one has a very ...
    spider spider August 2020 Chit chat
  • can anybody match my high tech testing bay ... [url="https://photos.app.goo.gl/PSsCJRDDCDVJV9158"]https://photos.app.goo.gl/PSsCJRDDCDVJV9158[/url]

    Or electrolytic capacitors connected up with the wrong polarity on a high voltage supply...!

    [b][i]Mark[/i][/b]
    1024MAK 1024MAK August 2020 Hardware
  • can anybody match my high tech testing bay ... [url="https://photos.app.goo.gl/PSsCJRDDCDVJV9158"]https://photos.app.goo.gl/PSsCJRDDCDVJV9158[/url]

    [quote="1024MAK;969692"]Or electrolytic capacitors connected up with the wrong ...
    spider spider August 2020 Hardware
  • can anybody match my high tech testing bay ... [url="https://photos.app.goo.gl/PSsCJRDDCDVJV9158"]https://photos.app.goo.gl/PSsCJRDDCDVJV9158[/url]

    ... polarity wrong for a large electrolytic capacitor on a project he ... ’ve only blown up smaller electrolytic capacitors. I do have a big ...
    1024MAK 1024MAK August 2020 Hardware
  • Repairs and Reparing.Hi All, Just finished resurrecting an Issue 3A board. Had black lines, so replaced the lower 16K RAM chips, Amazed they just cost a couple of doll…

    ... of always replace all the electrolytic capacitors in everything. For example, there ... /> Hence I recommend replacing the electrolytic capacitors in the DC-DC converter ...
    1024MAK 1024MAK February 2021 Hardware
  • Questions about microdrivesHi! Bought an Interface 1 and two microdrives along with around 10 microdrive cartridges. Installed (great but very expensive) vdrive zx into one …

    Yep, I cleaned head with isopropyl alcohol, replaced the electrolytic capacitors + rollers. Only one cartridge works - so I’d guess the problem is with the cartridges.
    arttu arttu May 2021 Hardware
  • 16pf Capcitors for C72/C73 issue 3b. Can I use 18pf?Looking at the service manual it states to use a 16pf ceramic disc capacitor in positions C72 and C73 on issue 3b boards. Is this very critical in bo…

    ... to obtain all the axial capacitors(MLCC types) to the correct ... right. :D I have all electrolytic capacitors in my spares stash along ...
    Your Spec-chum Your Spec-chum October 2021 Hardware
  • 16pf Capcitors for C72/C73 issue 3b. Can I use 18pf?Looking at the service manual it states to use a 16pf ceramic disc capacitor in positions C72 and C73 on issue 3b boards. Is this very critical in bo…

    ... far :-

    1. Axial capacitors - Currently the modern MLCC types ... 15pF.

    2. Axial electrolytic capacitors - These aren't so easy ... there with the 16pF axial capacitors, and the ZTX313 transistors for ...
    Your Spec-chum Your Spec-chum October 2021 Hardware
  • Using a thermal camera to fix speccy's.Hi All, Thought I'd share another repair... Got a board that collapsed the bench supply straight away ( I run a bench supply and give it just enou…

    ... thermal camera to find leaking capacitors too? how?
    What model ... suggest?
    Thanks.[/quote]
    Electrolytic capacitors that have a high ‘ripple ... they self heat.

    Electrolytic capacitors that run warm do often ...
    1024MAK 1024MAK January 2022 Hardware
  • Using a thermal camera to fix speccy's.Hi All, Thought I'd share another repair... Got a board that collapsed the bench supply straight away ( I run a bench supply and give it just enou…

    ... thermal camera to find leaking capacitors too? how?
    ... /> Thanks.[/quote]
    Electrolytic capacitors that have a high ‘ripple ... camera, so if the capacitors are not warm, they ...

    Ripple current capacitors rarely need replacing. Most of ...
    cj7hawk cj7hawk January 2022 Hardware
  • Are these capacitors the right ones?Issue 3 board [URL="http://cgi.ebay.co.uk/16V-100uF-105-C-electrolytic-radial-Capacitor-X-10pcs-/120526193275?pt=UK_BOI_Electrical_Components_Supplie…

    ... .uk/16V-100uF-105-C-electrolytic-radial-Capacitor-X-10pcs-/120526193275 ... .uk/16V-22uF-85-C-electrolytic-radial-Capacitor-X-10pcs-/120642525774 ...
    Macc Macc February 2011 Hardware
  • Needing new capacitors. Where to buy online?Hi. I need new axial capacitors for a whole bunch of Speccy boards I have. Problem is, it's been hard to buy some of them online. Some shops will onl…

    Hi. I need new axial capacitors for a whole bunch of ... I can buy new axial capacitors?

    Radial aren't ...
    pkersey pkersey September 2012 Hardware
  • CapacitorsSorry, another question... I've done a bit of looking around, although after a couple of beers this may not have been as systematic as usual, but I …

    ... information on the specifications of capacitors that should be used as ...
    Simon_Carr Simon_Carr May 2013 Hardware
  • Bad (new) 100uF caps causing video disturbanceJust to let you know about one of my small experiences: I had a couple of 48K boards I was refurbishing: new electrolytic caps, composite video, te…

    ... boards I was refurbishing: new electrolytic caps, composite video, testing with ...
    I always replace all electrolytic caps from those boards nowadays ... to be one of the capacitors.
    I took a ... and started to replace its capacitors.
    It didn't take ...
    bverstee bverstee August 2014 Hardware
<1…11121314151617…34>

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