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  • Soldering Iron recomendation...About two months ago I asked a colleague to borrow his soldering iron for a couple of days to do a "quick repair" to a Spectrum, unfortunately for hi…

    ... a soldering iron just to replace some capacitors or add a resistor ...
    joefish joefish December 2014 Hardware
  • Hacking a +2 into a shorter caseIf anyone's got a copy of the notes or text they posted about re-wiring the +2 joystick ports or hooking up a tape recorder to the motherboard casset…

    ... worst case scenario you can replace the grey keytops with black ... a good schematic of a +128 toastrack and the +2 grey ...
    1024MAK 1024MAK May 2015 Hardware
  • Spectrum+ refurbished by a noob!Sorry if I'm slightly spamming the forum with threads about my Spectrum+, but this is the last one (for now!) as it is all fixed up and I just wanted…

    ... refurbished I had to replace all the capacitors as some had either ...
    Your Spec-chum Your Spec-chum July 2015 Hardware
  • Replacing foam pads on top of heatsink in Spectrum+Inside a Spectrum+ that I'm working on, the 2 foam pads on top of the heatsink (see photo for where they were) had become a disintegrated mushy pile …

    Nicely done. Now replace those capacitors :)

    B
    balford balford July 2015 Hardware
  • Replacing foam pads on top of heatsink in Spectrum+Inside a Spectrum+ that I'm working on, the 2 foam pads on top of the heatsink (see photo for where they were) had become a disintegrated mushy pile …

    ... I can test the existing capacitors. I liked the look of ... 't seem to work with capacitors still on the circuit board ... it's best to replace all the capacitors anyway - I just wanted ...
    Mousey Mousey July 2015 Hardware
  • not working issue 3Hi all, I received this mobo from ebay, after start i have this on screen [img]http://forest.no-ip.org/wos/issue3_01/20150728_135908.jpg[/img] …

    ... still has its original electrolytic capacitors. I strongly recommend all of ... these be replaced. Aged electrolytic capacitors are a very common cause ... the following:

    - Replace all electrolytic capacitors.
    - Check TR4, TR5 ...
    Zorn Zorn July 2015 Hardware
  • Toastrack fault - anyone recognize it?Hi I took a chance on a toastrack on eBay lately although it had a fault. The problem can be seen on the linked picture below. The problem sta…

    Maybe dried electrolytic capacitors.
    It's always a good idea to replace them anyway.
    IIRC c25 and c45 are part of the video circuit, so start with these first.
    d_kef d_kef August 2015 Hardware
  • Spectrum CapacitorsLooking for some opinions here, if I may? In the 80's and 90's I used to repair Spectrums and other machines for a living so I'm reasonably famili…

    ... , coaches, aircraft, etc that you replace at prescribed time intervals. This ... preventative maintenance.

    Electrolytic capacitors have a lifetime rated in ...
    1024MAK 1024MAK September 2015 Hardware
  • Spectrum CapacitorsLooking for some opinions here, if I may? In the 80's and 90's I used to repair Spectrums and other machines for a living so I'm reasonably famili…

    ... use Rapid or CPC for capacitors, though I must confess I ... two years I had to replace the same caps. I've ...
    RobeeeJay RobeeeJay September 2015 Hardware
  • Spectrum CapacitorsLooking for some opinions here, if I may? In the 80's and 90's I used to repair Spectrums and other machines for a living so I'm reasonably famili…

    ... with the poorest longevity among capacitors in general. 25~30+ ... 't too much trouble to replace them all at once. And ... fine as replacement for electrolytic capacitors.

    So yes, I ... . And: once I replace one, I prefer to replace 'em all. Preferably ...
    RetroTechie RetroTechie September 2015 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... a lot hotter , hence I replace them with Traco Power switching ... be triggered , especially with original capacitors."

    My skill levels ...
    harriusherbartio harriusherbartio October 2015 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... that useful. Generally, electrolytic capacitors should be replaced with new ... the same value (so replace a 1uF with a 1uF ... /> I recommend using electrolytic capacitors rated at 105 degrees C ... do recommend replacing old electrolytic capacitors, but I suspect that ...
    1024MAK 1024MAK October 2015 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    Ceramic capacitors have improved, so it is now possible to replace a 1uF ... .

    None of these capacitors cost very much, so I ...
    1024MAK 1024MAK October 2015 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... DS with no problems. (simply replace te opus.rom in folder ... /> -quickdos (v2.31) incompatible with 128+ or +2 grey? really?
    Julio Julio October 2015 Hardware
  • Faulty 48+ Help NeededHi, This is what I get when I plug in the spectrum, this is tuned in. Vid shows a reset. Any ideas, or pointers on the first thing to check. Keyboa…

    ... that I missed is to replace the capacitors.
    I've got ...
    lesoleil70 lesoleil70 October 2015 Hardware
  • Issue 1 schematics?I'm fault-finding an issue 1 board. So far I've found a hot memory chip and snipped it's supply legs, then swapped the burnt-out 7805 for a switched…

    ... , it is wise to replace the electrolytic capacitors in the power supply ...
    1024MAK 1024MAK November 2015 Hardware
  • No serial numberI recently bought a 1982 issue 2 spectrum which I believe is a 16k upgraded to 48k. There is no serial number on the case. Does anyone know why th…

    ... .

    I have replace the electrolytic capacitors and added the ribbon ...
    Barmcake Barmcake November 2015 Sinclair Miscellaneous
  • Composite picture qualityI have read many many discussions here about the composite video modification of the Spectrum 16/48K models. I have choosen one of the simplest comp…

    ... do wonders here. But first replace those old electrolytic caps if ... recommend that ALL the electrolytic capacitors are replaced. For the best ... picture quality, use low ESR capacitors for the inverter/converter power ...
    1024MAK 1024MAK December 2015 Hardware
  • Sudden death of ZX Spectrum 48KHello A friend gave me a 48K rubber keyed Spectrum. I brought it home, hooked it up to my little TV and powered it up. I was very happy to see t…

    ... , should I just replace all the electrolytic capacitors and see what happens ...
    memrah memrah December 2015 Hardware
  • Text scroller and custom fontYesterday I was testing this text scroll routine taken from Jonathan Cauldwell's Intro Maker (labels have been inserted to allow partial code relocab…

    ... wrap round bits ( originally the 128+64+32 now 4+2 ... you need to do is replace the top section with ( I ...
    seedy1812 seedy1812 January 2016 Development
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... />
    If you do replace the electrolytic capacitors, use good quality 105C ...
    1024MAK 1024MAK March 2016 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... known that some people routinely replace the regulator with a newer ... reconsideration here.

    THE CAPACITORS . I replaced the big ones ... list of all the relevant capacitors would be useful info here ...
    harriusherbartio harriusherbartio March 2016 Hardware
  • New Spectrum+ membane problemsHi all! I have installed a [b]brand new[/b] mebrane in one [b]Spectrum+[/b] of mine and I have the following keys not working [b] INV VIDEO T…

    ... same keyboard with your Spectrum 128 (or vice versa) to rule ... , then have you remembered to replace the cardboard spacer (to stop ... be that you need to replace (or resolder) the molex keyboard ... to recap the machine or replace one or more of the ...
    rwap rwap March 2016 Hardware
  • Where can I get some AY music asm/binary files?Is there an online repository for these types of file that people can download and use on their projects? Seen something similar for MSX (Z80 base…

    ... .asm files work on the 128 with a little tweaking?[/quote ... sound chip like the Speccy 128; so the data is compatible ... , so you may need to replace OUT(nn),A with OUT ...
    GReW GReW March 2016 Development
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... one of the capacitors) ! Some things we replace the caps on/for ...
    harriusherbartio harriusherbartio April 2016 Hardware
  • Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …

    ... />
    1) Maybe I should replace the capacitors?

    2) White ...
    harriusherbartio harriusherbartio May 2016 Hardware
  • Buying a new TVMy Philips 9 year old flatscreen TV is on the road out and recently wouldn't switch on (and the picture is starting to go) so I think I need a new TV…

    ... bust, because they place electrolitic capacitors, near heat sources, which ... in time, dries the capacitors, and makes the power source ... on top, just replace all electrolitic capacitors, and you have a ... usually related with bad/dry capacitors.

    P. ...
    RMartins RMartins June 2016 Chit chat
  • ZX Dandanator! Mini - Cartridge system for SpectrumsHi All, I'd like to present a little HW I've developed during the last three months. It's aimed at providing a console-like usage experience for a…

    ... /memface1_v02_5.jpg[/img]

    128-512kB sram for allram mode ... blocks with separate paging
    128-512kB flash eprom with ZX ... paging, ZX rom replacement (also replace full 64kB rom on +2A ...
    velesoft velesoft July 2016 Hardware
  • 128k toastrack board changesI was working on my spectrums this weekend and opened up my toast rack to look at the possibility of changing out the Electrolytic caps. I was awar…

    ... the composite output of the 128 toasty to the 3x 48k ... made a cable for the 128, din plug to RCA. (2 ... though I do intend to replace them when I get the ...
    beanz beanz September 2016 Hardware
  • Change JPs by JRsIs there any (easy) way to replace all long jumps with relative ones in assembler code? Of course, I can replace all in text editor, and then place …

    ... probably do with a regex replace in just about any decent ... you could use a regex replace to calculate the number of ... it's within the range -128 to +128.

    This would ...
    GReW GReW September 2016 Development
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