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Which capacitors are electrolytic?Hi! I'm refurbishing my 48k issue 6a, and as recommended by many (and not recommended by some) I'm going to replace the electrolytic capacitors. Mind…
... -Layout.gif) and followed the caps list (http://www.1000bit.it ... #issue6a). However there are some caps listed as "ceramic" in the ... have a list of which caps should be replaced and which ... -
Getting a +3 working again (keyboard & tape socket issues)So, as part of my Spectrum restoration project I will also try to tackle the problem child among my fleet, the +3. PROBLEM ONE: Ever since I firs…
... VIDEO keys which are all Caps Shift plus a non-working ... -
Faulty ZX SPectrum 128k +2Hello. Iv just joined as I recently came across my old Spectrum from nearly 30 years ago :-0 In my Dads house. I played with this thing for Years. An…
Hello. Iv just joined as I recently came across my old Spectrum from nearly 30 years ago :-0 In my Dads house. I played with this thing for Years. Anyway. I remember the day it broke. I had the expansion pack in to allow the use on a different controller, ... -
ZX Spectrum border and sound problemAfter recap stange problem with ZX Spectrum (issue 3b) with sound and border. See video at: [url="https://drive.google.com/file/d/0BwhYHKW6xjI-aVdMcE…
... was replaced again with old caps and same thing. Upper 32KB ... -
ZX Spectrum border and sound problemAfter recap stange problem with ZX Spectrum (issue 3b) with sound and border. See video at: https://drive.google.com/file/d/0BwhYHKW6xjI-aVdMcEY4ajVk…
... was replaced again with old caps and same thing. Upper 32KB ... -
ZX81 Ram pack problemI got recently Sinclair 16k memory expansion for my ZX81, but for some reason it will not work. The computer itself is operating normally without hi…
... course, maybe ram pack is faulty, but it's weird that ... -
128K + Toast Rack getting quite hot?Just wondering something if someone can put my mind at ease After using my 128k for around 10 minutes+ it seems to get quite warm around the heatsin…
... as the old regulator was faulty, after replacing it it was ... -
Disabling the ROM without removing the whole thingHi! I've got my hands on a non-working issue 6a. I suspect the ROM may be bad, but other things may be faulty as well. I've read that in an otherwis…
... , but other things may be faulty as well. I've read ... -
Another 48k Speccy acting as a 16K model.Hi all, I originally was going to post asking for help to fix the new addition to my family a very nice condition Issue 2 sold on ebay as a 16K model…
... a 16K model with a faulty keyboard ( dont they all). When ... -
Can anyone help me identifying a chip?I have a Tiger LCD hand-held game which is malfunctioning and I am trying to put it back in working order, but it seem more difficult than I first th…
... ...
Anyway, apart from 2 caps, 4 diodes and 1 transistor ... -
ZX Diagnostics v0.35 ReleasedHi all, I'm pleased to announce the release of zx-diagnostics v0.35, downloadable from [url="https://github.com/brendanalford/zx-diagnostics/relea…
Double Buffering Artefacts on Real HardwareI have a project that I've played around with for a while and always tested using emulators, either ZX Spin or Spectaculator. It is a 128k game th…
... it could just be some faulty hardware on my +2. I ...ZX power supply with white stickerHi all - 1st post here so greetings to one and all. A friend offered to sell me a ZX power supply, the standard black 9v one for the Spectrum, but…
... might be one of those faulty ones that got recalled by ...48k spectrum problems at bootHey guys so my 48k Specfy, Issue 3B is having some issues. They're not entirely consistent but the majority of the time (95%) it presents itself as m…
... either the Z-80 is faulty or the upper RAM is ... faulty. Please help!!
Image below< ...+3 memory repair- which ICHi there, I'm trying to repair an old +3 and have bought a Retroleum SMART card. The diagnostic rom test says that the upper ram is faulty and give…
... that the upper ram is faulty and gives the address $FFFF ...ZX Spectrum+ showing 16K of RAMHello again, as the title says my ZX Spectrum+ is showing only 16K of RAM instead of 48K when running a memory check. [url="http://www.1000bit.it/su…
... on how to identify the faulty RAM chip, but I seriously ...Troubleshooting RAM IC's on Spectrum +2 Grey?Got myself a grey +2 but at startup it shows something very similar to this: [img]https://preview.ibb.co/mmai5F/2_Ram_Fault.png[/img] I also su…
... how can I identify the faulty chip or chips?
The ...High score table routineI wrote this general purpose high score table routine. It stores 5 scores and displays them alongside the player names, which are 8 characters long. …
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FLAG2 EQU 23658 ; forces Caps Lock when set to 8 ... ,8
LD (FLAG2),A ; Caps Lock
LD DE ...Faulty Spectrums (not Amstrad)Fancy fixing up a few, if you have any and don't want stupd ebay prices please get in touch with what you have, pics condition and cost by PM. UK ba…
Fancy fixing up a few, if you have any and don't want stupd ebay prices please get in touch with what you have, pics condition and cost by PM.
UK based.Spectrum 128k +2 Grey and DivMMC reader problemHi guys, I am trying to figure out why the DivMMC reader do not work on a Spectrum 128k +2 grey I grabbed recently over the net. What is for sure…
... /> - the DIVMMC reader is not faulty and works perfectly with a ...In-game Screen FlickeringHi folks, today while playing 'Beyond the Ice Palace' I noticed strange behavior of my Issue 6a Spectrum+. When I pressed '2' (for UP) + 'O' (for …
... for the HW all the caps are brand new, RF modulator ...Can anyone remember a film where a damaged ship can't countdown sequentialy during a self destruct?When I was a child, I'm sure I remember part of a film or maybe TV movie where a boy or maybe a teenager is in a spaceship. The ship has a intelligen…
... the computer becomes damaged or faulty.
It can no longer ...Replacing lower RAM 4116 ZX Spectrum 48k - desoldering advice please?A long post, but interesting pictures perhaps. :) I'd like some advice: (also apologies I think I picked the wrong 'Hardware' category for this, plea…
... of the current 4116 are faulty (no basis for this guess ... of testing which 4116 is faulty, if any. I've tested ...A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…
... not, check if it is CAPS SHIFT
ld de,s_shf ... /> cs_key cp 39 ;is it CAPS SHIFT?
jr nz,as_is_key ...Custom Menus on the ZX Spectrum +3Today, my Friends, i have the pleasure of presenting a program i have written which gives a set of custom menus on the +3. The main features of my p…
... , press the EDIT key (or Caps Shift+1), and you will ...48k packed up after cap changeHi all, I'm relatively new to the Sinclair world, my 8-bit repairs in past was lurking in the dark sides of Acorn, Amstrad and Commodore! I've got…
... signs of blowing leaking or caps so I changed them, fitted ... present before and after new caps installed and within 0.3v ...ZX Spectrum Issue 2 - 12V badHey there, I'm currently attempting to fix a ZX Spectrum issue 2 that I recieved. Overall the machine was generally working when I recieved it, bu…
... . I've already swapped all caps, verified R58/R59, replaced D15 ...