Let's service this ZX spectrum!

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  • เผยแพร่เมื่อ 27 ม.ค. 2025

ความคิดเห็น • 96

  • @peddersoldchap
    @peddersoldchap 11 หลายเดือนก่อน +1

    8:10 Thanks for leaving on the mistakes; it's a useful warning for those trying to do repair work.

    • @tony359
      @tony359  11 หลายเดือนก่อน +1

      No worries - it would be boring if everything went smoothly :) Thanks for watching!

  • @bitsundbolts
    @bitsundbolts ปีที่แล้ว +2

    Great restore of the ZX Spectrum! I always wanted to do a measurement of bad caps vs good caps from the power supply. But I never had a board where I would dare to power it on with the old capacitors still in circuit.

    • @tony359
      @tony359  ปีที่แล้ว +2

      Apparently I pushed my luck here :) oh well, it worked! :)

  • @tiemanowo
    @tiemanowo ปีที่แล้ว +3

    28:35 It always fascinates me how many different types of data storage was invented for computers. Like: sound, mechanical (punch tapes), magnetic, light, electric and propably many more I don't even know.

    • @tony359
      @tony359  ปีที่แล้ว +2

      Yes, back then when any small option was a good one!

    • @SpeccyMan
      @SpeccyMan 11 หลายเดือนก่อน +1

      were invented, (plural please)

    • @tony359
      @tony359  11 หลายเดือนก่อน +1

      I'm now expecting an email with a long list of grammatical mistakes I made in this - and all my other - video/s :) 😜
      I do pick most of them during the editing phase but its(*) part of the show! 🙃
      I think the funniest one was "Now grab your balls" when referring to the solder balls in my BGA reballing video! 😄
      (*) intentional 🙃

    • @BumdanglerFartbiscuit
      @BumdanglerFartbiscuit 11 หลายเดือนก่อน +1

      @@SpeccyMan Capital letter and quotation marks, please.

  • @minombredepila1580
    @minombredepila1580 ปีที่แล้ว

    Very nice service and relaxing video for the end of the day, Tony. I didn't know about the 5v regulators, to substitute the "oven" 7805. Heard about the "Traco" ones but they were not cheap, and retroleum sells the one in your video for lower prices. Cool !!. I guess this is the time to service my Speccy.

    • @tony359
      @tony359  ปีที่แล้ว

      Retroleum has very good prices and reasonable shipping indeed. These regulators should be very similar to the Traco ones. As much as I like keeping things original, in this case it’s really a good thing to turn off the oven 🙂

  • @Thorsten369
    @Thorsten369 ปีที่แล้ว

    Great video Tony and as always it brings back some good memories. Keep up the amazing work my friend ;)

    • @tony359
      @tony359  11 หลายเดือนก่อน +1

      Thank you!

  • @rodneylanders5985
    @rodneylanders5985 11 หลายเดือนก่อน

    Keep up the great work,Tony ! Totally enjoyed this video

    • @tony359
      @tony359  11 หลายเดือนก่อน

      Amazing thanks for your comment!

  • @didiertoulouze8156
    @didiertoulouze8156 ปีที่แล้ว

    I spend so much time on my Spectrum programming Basic (and play Manic Miner). Thanks for this restore :)

    • @tony359
      @tony359  11 หลายเดือนก่อน

      Back in 1982 it was like magic! Thanks for watching!

  • @Epictronics1
    @Epictronics1 ปีที่แล้ว

    Coming from a C64 childhood, these machines are so tiny! Nice restoration!

    • @tony359
      @tony359  ปีที่แล้ว +1

      Yes! They look like toys but they're not!

  • @thealphageek1975
    @thealphageek1975 ปีที่แล้ว +1

    Is it just me or did the video quality improve too after the capacitor replacement? Love this!

    • @tony359
      @tony359  ปีที่แล้ว

      It's a different capture device, an old Elgato which doesn't work with anything BUT the ZX Spectrum! Thanks for watching!

  • @jb2590
    @jb2590 11 หลายเดือนก่อน

    Thanks for another great video Tony :)

    • @tony359
      @tony359  11 หลายเดือนก่อน

      My pleasure!

  • @jeremiefaucher-goulet3365
    @jeremiefaucher-goulet3365 11 หลายเดือนก่อน

    Awesome video ❤

    • @tony359
      @tony359  11 หลายเดือนก่อน

      Thank you!

  • @general23cmp
    @general23cmp ปีที่แล้ว

    Great video!

    • @tony359
      @tony359  11 หลายเดือนก่อน

      Thanks for the visit

  • @Senux-Video
    @Senux-Video ปีที่แล้ว

    Thanks for video. zx - my childhood. For retro pc's keyboard rubber repair I use Circuit Breaker Repair, the same loctite 3863..

    • @tony359
      @tony359  ปีที่แล้ว

      Great to know, thank you!

  • @aleksandardjurovic9203
    @aleksandardjurovic9203 ปีที่แล้ว

    Thank you very much for this entertaining video!

    • @tony359
      @tony359  ปีที่แล้ว

      You are very welcome, thanks for watching!

  • @Snowsea-gs4wu
    @Snowsea-gs4wu 8 หลายเดือนก่อน

    3, 2, 1 go. Awesome!

    • @tony359
      @tony359  8 หลายเดือนก่อน +1

      I'll have to make some shirts one day :D

  • @SpeccyMan
    @SpeccyMan 11 หลายเดือนก่อน

    The beloved Speccy was very very very temperamental about levels on its mic socket. I do believe there is an Arduino based hardware solution (I can't for the life of me remember what it is called) that allows you to play tap/tzx files - stored on an sd card - into a Speccy. Certainly a worthwhile investment if you are servicing a lot of the machines.
    It is heartwarming to see the old machine getting some TLC and being restored back to its former glory with no corners being cut in the process. 👍
    And yes, my screen name is a tribute to the machine. 😉

    • @tony359
      @tony359  11 หลายเดือนก่อน

      Thank you for your comment! I don't have more Speccy's for now so the laptop will be ok for now but I'll keep that solution in mind, thanks! Thanks for your kind words!

  • @CodingSync
    @CodingSync ปีที่แล้ว

    Electrolytic capacitors contain wet chemicals that dry out. They also have a rubber bung at one end to allow for safe leaking out of the chemicals rather than an explosion due to boiling. And the cap may have indents on it to allow the case to split. So they lose their ability to act as a capacitor for smoothing out ripples on power rails and storing energy to satisfy the demand of pulses of current required by the circuits. It is a very good idea to replace old E-caps on power rails.

    • @tony359
      @tony359  11 หลายเดือนก่อน +1

      It never hurts, yes! Thanks for watching!

  • @LuisFCorreia
    @LuisFCorreia ปีที่แล้ว

    I have in my old spare parts bin a "deaf ULA" which was damaged around the 90's but kept because it still produced video and worked great for testing and debugging. (i'm also a sucker for old hardware which is partially working)

    • @tony359
      @tony359  ปีที่แล้ว

      I would do the same! A half-broken ULA for testing, amazing! Too bad the other one did not survive! Thanks for watching!

  • @pepealexandre
    @pepealexandre ปีที่แล้ว

    Awesome!

    • @tony359
      @tony359  11 หลายเดือนก่อน

      Thank you!

  • @piernov
    @piernov ปีที่แล้ว

    Silver conductive paint can be used to fix traces on membrane keyboards. However depending on the keyboard (I don't know about these specifically but doesn't look too bad) it may not be a fun job to do and it can be difficult to obtain a nice result. So it can still be a better idea to get a replacement keyboard/membrane if they are available for an acceptable price.

    • @tony359
      @tony359  ปีที่แล้ว

      Exactly, I think the membrane was £9 and it's "plug and play". Sure, with silver paint you can fix many membranes but that's assuming the rest of the membrane is working :)
      Thanks for watching!

    • @piernov
      @piernov ปีที่แล้ว

      @@tony359 at that price it's indeed a no-brainer when you're doing that for a customer. I have fixed a handful of laptop keyboards with silver conductive paint, with damaged traces (or even contact pads, but these are harder to get right) inside the membrane, but I definitely understand nobody wants to go through the trouble. I wish it was as easy to get a replacement membrane manufactured as a PCB though.

  • @sarkasaa
    @sarkasaa ปีที่แล้ว

    at 24:29 was that GOSUB on the H key on purpose? 😆

    • @tony359
      @tony359  ปีที่แล้ว +1

      Oh, I just got it! 😆

  • @AramAzhari
    @AramAzhari ปีที่แล้ว +1

    The very first device I ever laid my hands on, at the age of 6. My sibling taught me to type a print command and then save it to an audio cassette 😄. 34 years later, I work as a software developer for a large corporation 🤠

    • @tony359
      @tony359  ปีที่แล้ว

      Amazing, that's the way!

    • @SpeccyMan
      @SpeccyMan 11 หลายเดือนก่อน

      And yet you cannot spell laid? 😉

    • @AramAzhari
      @AramAzhari 11 หลายเดือนก่อน

      @@SpeccyMan good catch! I fixed the typo. Thanks.

    • @tony359
      @tony359  11 หลายเดือนก่อน +1

      @Speccyman - everybody is welcome here but I really have to ask you to refrain from adding so many comments about grammatical mistakes or misspells on the comment sections. You are welcome to participate, comment, criticise but I really don't see the reason for adding so many comments whose purpose is only to highlight other people's mistakes. I appreciate your help on this, thank you!

  • @jameshearne891
    @jameshearne891 ปีที่แล้ว

    I wonder what they managed to plug into the tape port to overheat that 10K resistor
    Assuming it's a quarter watt (it could be half) resistor you'd need 50 volts just to dissipate the 1/4 watt and a lot more to actually cause it to overheat that much.

    • @tony359
      @tony359  ปีที่แล้ว

      Yes! I'm thinking that someone might have plugged a speaker line. Still, to provide much more than 1/4 watt... I don't know! Thanks for watching!

  • @franktriggs
    @franktriggs ปีที่แล้ว

    That board plugged into the chip socket is from a Foxx 32k upgrade kit. I have the exact same issue 2 16k spectrum with a Foxx memory upgrade. Also, it should have grey keys for a 16k model.

    • @tony359
      @tony359  ปีที่แล้ว +1

      Ahhh interesting. What is a "foxx 32k" kit?

    • @franktriggs
      @franktriggs ปีที่แล้ว

      Foxx was the name of the company that sold the 32kb memory upgrade for issue2 speccys, I got mine for Christmas in 1985@@tony359

    • @tony359
      @tony359  ปีที่แล้ว

      So you're saying this ZX was born as 16KB and then upgraded via Foxx upgrade, not Sinclair's? And the keyboard is not original?

    • @franktriggs
      @franktriggs ปีที่แล้ว

      It was sold as a Sinclair 16kb model yes, then upgraded by someone later. The issue 2's had sockets for the RAM and logic chips to upgrade it. Most old 16kb had grey keys, a few later ones had the blue keys, Sinclair probably just used up the grey's then used blue. So it may be original.@@tony359

  • @markretro3612
    @markretro3612 11 หลายเดือนก่อน

    OTLA is a great loader .. very fast but can be the tricky on the levels as you found out

    • @tony359
      @tony359  11 หลายเดือนก่อน

      What would you use? I tried playing WAV files or an app on my mobile but that didn’t work.

    • @markretro3612
      @markretro3612 11 หลายเดือนก่อน

      @@tony359 yeh wav or mp3 files, i use WINZTX to transfer them from ztx files etc. the laptop output is the weak point but if you are able to load OTLA then a standard loader should be no problem. once you have them as audio files you can also try other devices like iPhone etc. i even import them into my iTunes library. also the issue 2 spectrum are the most difficult to load from. what cable configuration are you using ? ie the spectrum end needs a mono jack but the device loading needs to be correct for that device

    • @tony359
      @tony359  11 หลายเดือนก่อน

      I manually patched the jack output to the ZX as - as you said - it's stereo and the receiving jack doesn't like it. It's weird as OTLA works but VLC doesn't. I didn't try after realising that I had a compressor on the line though.

  • @nickolasgaspar9660
    @nickolasgaspar9660 8 หลายเดือนก่อน

    I always use double sided tape to reinforce the ribbon cables with plastic pieces.(mainly because of my unjustified fear of unwanted reactions between the liquid glue and plastic). That would be helpful in the case of the error you showed. As much as I love Speccy, I really hate the way it was built. To many ways to make an error and break the computer. To many asterisks when swapping ICs between different issues. Far to many ways to have your RAM cooked. I really enjoy Jay Miner machines of the same era, you just can't go wrong no matter how inexperienced you are.

    • @tony359
      @tony359  8 หลายเดือนก่อน

      yes, those machines were horribly built - you really need to bear in mind they were < £100 to appreciate how cool they were! :)

  • @harvaldi
    @harvaldi 11 หลายเดือนก่อน

    I'm always conflicted if it is better to restore/leave original state of retro machine or upgrade it in some way to make it more reliable, functional, better. After all how many of these machines could get original parts?

    • @tony359
      @tony359  11 หลายเดือนก่อน

      I like to keep things original as well, in this case keeping it original means to really shorten the lifespan of the unit IMHO. Thanks for watching!

  • @crazyedo9979
    @crazyedo9979 ปีที่แล้ว

    My first thaught seeing this bottle of super glue: Watch out for the contact side. 😁

    • @tony359
      @tony359  11 หลายเดือนก่อน

      🤦‍♂️ The definition of clumsiness :) Thanks for watching!

  • @nickolasgaspar9660
    @nickolasgaspar9660 8 หลายเดือนก่อน

    The conductivity issues of the ribbon cables can be addressed with conductive paint. Unfortunately its a really common problem. (with Atari membranes too).

    • @tony359
      @tony359  8 หลายเดือนก่อน

      Yes, I could have tried that though the replacement is not so expensive so... but definitely a tool to keep on your desk!

  • @I_Don_t_want_a_handle
    @I_Don_t_want_a_handle ปีที่แล้ว +1

    Oh, the hours spent in the early 1980s fiddling with the tone and the volume of the cassette player for every game ... and all I had to do was click off 'audio enhancements'. 😆

    • @tony359
      @tony359  ปีที่แล้ว

      I'm sure Windows 3.1 also had a similar option! :D

  • @jeremywh7
    @jeremywh7 11 หลายเดือนก่อน

    What is the current draw range now, after the voltage regulator upgrade?

    • @tony359
      @tony359  11 หลายเดือนก่อน

      Ah, I didn't really check that, good point. I'd imagine it lowers a bit.

  • @peddersoldchap
    @peddersoldchap 11 หลายเดือนก่อน

    29:30 HAHHHAH RIP scope XD

    • @tony359
      @tony359  11 หลายเดือนก่อน

      To be fair, it's my network :)
      The scope is good, it keeps working but there is something with the rest of the network which upsets the VNC every now and then!
      Thanks for watching!

  • @valterstrumpiks7832
    @valterstrumpiks7832 11 หลายเดือนก่อน

    Retro stuff is great, but is there a way for you to take on a more “conventional” products from time to time? You know, the boring stuff, fixing a car audio amplifier or a more modern game console? Would do great for views and attracting more audience. Superb production by the way, really enjoy watching your videos!
    Just to be clear, I know you have videos about PlayStations of many generations, they do get good views hence my comment.

    • @tony359
      @tony359  11 หลายเดือนก่อน

      Wellll… my last PS3 video didn’t go so well! Fair enough it was a simple repair. I always welcome new stuff. More modern devices might be ‘too small’ for me to work on. Some modern SMD stuff is crazy small and I’m not sure I’d enjoy that. But I do have many things on the pipeline, amplifiers, sound processors, PS4… the difficult part is to get to them but they are on the list! Thanks for the feedback and for watching!

  • @za_ozero
    @za_ozero ปีที่แล้ว

    That resistor was red hot at some point

    • @tony359
      @tony359  ปีที่แล้ว +1

      Oh yes, I guess some magic smoke escaped too!

  • @sokoloft3
    @sokoloft3 ปีที่แล้ว

    Classic windows messing with audio settings. Such a pain. I use voicemeeter banana and some updates change my output device.

    • @tony359
      @tony359  ปีที่แล้ว +1

      Windows has been resetting my HTPC audio settings with updates since I can remember. It's so annoying!

  • @LuisFCorreia
    @LuisFCorreia ปีที่แล้ว +3

    Hey Tony, saying it again, you should NOT power on an ancient Speccy without changing capacitors first. You are risking damaging lower RAM from spikes that occour on power on

    • @tony359
      @tony359  ปีที่แล้ว +1

      I'll bear that in mind thanks!

  • @MK-jo1gi
    @MK-jo1gi ปีที่แล้ว

    That shows how incredibly cheaply the ZX Spectrum was created. It's an impressive piece of engineering for it's time, but man some of the things are nasty. :)

    • @tony359
      @tony359  ปีที่แล้ว

      Aren't they! :)
      For 1982 though Sinclair managed to develop an incredible machine!

    • @bradallen8909
      @bradallen8909 11 หลายเดือนก่อน

      @@tony359Not really when you consider the C64 also launched in that year.

    • @tony359
      @tony359  11 หลายเดือนก่อน

      Yes but the C64 was launched at $595, the ZX spectrum base version at £125 (around $220 back then)

    • @bradallen8909
      @bradallen8909 11 หลายเดือนก่อน

      @@tony359 Yes, I realise it was built to a certain price point. But you get what you pay for. The graphics on the Spectrum are nothing short of laughable.

    • @SpeccyMan
      @SpeccyMan 11 หลายเดือนก่อน

      ... its time ... (no apostrophe in the possessive pronoun!) 😉

  • @AttilaAsztalos
    @AttilaAsztalos 11 หลายเดือนก่อน

    8:10 Clearly, attention to detail died in the eighties. This is how off-by-one bugs get normalized - "moreorlessthanorequaltooneorzeroorminusonewhocaresit'scloseenough"...

    • @tony359
      @tony359  11 หลายเดือนก่อน

      You mean the silly keyboard flat cables?