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A quick ZX Spectrum + restorationI bought a ZX Spectrum + the other day it was untested and in a state didnt cost me much and i had it today only to find the real state. Key 3 was al…
Did you replace the capacitors? I posted a ... down to a dry up capacitor. I replaced them all with ... -
A quick ZX Spectrum + restorationI bought a ZX Spectrum + the other day it was untested and in a state didnt cost me much and i had it today only to find the real state. Key 3 was al…
... Spec-chum;711443]Did you replace the capacitors? I posted a ... down to a dry up capacitor. I replaced them all with ... -
Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…
... . Recall that I had to replace C8 due to snapping off ... C8 until I get another capacitor kit in.
ii. During ... replaced C27 with a 1uF capacitor, but this was rated at ... replaced with an in-spec capacitor when the kit I have ... -
Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…
... . Recall that I had to replace C8 due to snapping off ... C8 until I get another capacitor kit in.
ii. During ... replaced C27 with a 1uF capacitor, but this was rated at ... -
Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…
... that I had to replace C8 due to snapping off ... C8 until I get another capacitor kit in.
ii ... not critical, as this capacitor is a power supply ... line decoupling capacitor. I don't think ... could buy a 1uF electrolytic capacitor rated at 10V, that ... -
Issue 4A repair attemptI think I need some help. I have a nice Issue 4A main board here, which does not give out any video signal. I checked some voltages (the ones that se…
... resistor rather than a proper capacitor. Problems arise when you have ... it, and you should replace that capacitor with one of an equal ... (say) a 16V rated capacitor to replace one rated at 10V. What ... do, ever, is to replace a 16V capacitor with a 10V.
Plus D Voltage Regulator OrientationHi, I?ve got a Plus D Disc Interface circuit board without case from a friend. Sadly he sends it to me without care for proper packaging. So it arr…
... the negative end of that capacitor connects to the centre pin ... , the polarity is wrong so replace the cap. Don't just ...Plus D Voltage Regulator OrientationHi, I?ve got a Plus D Disc Interface circuit board without case from a friend. Sadly he sends it to me without care for proper packaging. So it arr…
... this 100uF 25V electrolytic capacitor and the 7805 voltage ... have a 100nF multilayer ceramic capacitor (normally marked "104") fitted ... empty. The ceramic "104"-capacitor you mentioned
don? ...
[QUOTE=DEATH;713087]...so replace the cap. Don't just ...Issue 2 crashes after about 30 minsHi Guys, I have an Issue 2 zx spectrum that seems to get graphic corruption after about half hour of playing, then finally falls over and crashes. …
... , is the small amount to replace the current lost due to ... ]And not forgetting the reservoir capacitor(s): [/B]Used to " ... will partly discharge the reservoir capacitor(s) between the "top- ... "sag" somewhat (amount depends on capacitor value and load current).
Barn find #4I think this is some sort of backup device. Its got "007" on the motherboard and the mice have chewed the buttons. Will do a little research later in…
... it is and I'll replace it.[/QUOTE]
If you ... buttons, that looks like a capacitor used to remove electrical noise ... supply (known as a decoupling capacitor, which refers to the function ...ZX Spectrum clock signals comparedI haven't searched for this on WoS; it might have been posted before. But I think it's important info, and can't do any harm to repeat or show from a…
... switching psu, with a 100n capacitor between 74lvc1g14 power pin and ... speccy are gone, time to replace them :)
bye
spectrum issue 6a oddityMorning everyone Bought a speccy (rubber key) from ebay in near mint condition - couldn't tune in on analogue particularly well so did the comp mod …
... not, please, insert a 220uF capacitor between the video output and ... to include this capacitor at their inputs. The capacitor should be with ... doesn't fix your issue, replace TR1 and TR2 and remove ...spectrum issue 6a oddityMorning everyone Bought a speccy (rubber key) from ebay in near mint condition - couldn't tune in on analogue particularly well so did the comp mod …
... you so much mcleod_ideafix - the capacitor did the trick. I only ... some 220uf caps soon to replace, but for now it works ...spectrum issue 6a oddityMorning everyone Bought a speccy (rubber key) from ebay in near mint condition - couldn't tune in on analogue particularly well so did the comp mod …
... you so much mcleod_ideafix - the capacitor did the trick. I only ... some 220uf caps soon to replace, but for now it works ...First time capacitor replacementHi, I have an Issue 2 board, that i wish to start with recapping as advised on here, as they look to be all original. (Same with V3 board, but going…
... 't forget the large electrolytic capacitor in the mains power supply ... to remove working chips and replace with sockets (bases). I only ...Faulty grey +2, or not?While I?m still fighting with two to three grey +2 computers, which doesn?t give a video signal, I received another grey +2, which acts very strangel…
... a 350V rated electrolytic to replace one of 16V rating, ... br /> Use a good brand capacitor - it's worth spending a ... cheapies, a shorted out capacitor can cause chips to blow ... safe to use a capacitor of a higher than ... idea to have a capacitor thread on this forum, ...Spectrum Missing -5vMy Spectrum is "almost" booting, just when you expect the (C) 1982 Sinclair Research to appear it just displays flashing squares on the screen :( I …
... , the ZTX650 and ZTX213. I replace them with ZTX653 and BC213 ... 't do it, it's capacitor replacement time! Always transistors first ...Spectrum Missing -5vMy Spectrum is "almost" booting, just when you expect the (C) 1982 Sinclair Research to appear it just displays flashing squares on the screen :( I …
C46 is indeed a 1uF capacitor.
You'll also ... if you're going to replace them all; I recommend you ...Spectrum Missing -5vMy Spectrum is "almost" booting, just when you expect the (C) 1982 Sinclair Research to appear it just displays flashing squares on the screen :( I …
... ]C46 is indeed a 1uF capacitor.
You'll also ... if you're going to replace them all; I recommend you ...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…
... ...
I have to replace the original RAMs with MK4116 ... /> I will check my 1uF capacitor stock and I will make ...Faulty 128K toastrack keeps resettingHi. I have this toastrack which worked nicely for let's say 40 minutes and then a weird fault showed up. It keeps resetting over and over, sometimes…
... , and it's not a capacitor problem, then I would suspect ... found (one of) the fault - replace that chip and retest.
Almost no picture on a toastrack Issue 6UI?d need some help with a toastrack, that hardly shows any picture on both the RF and RGB. It?s totally distorted. I had this before and I remembered…
... missing and why would one replace a capacitor with two resistors?Almost no picture on a toastrack Issue 6UI?d need some help with a toastrack, that hardly shows any picture on both the RF and RGB. It?s totally distorted. I had this before and I remembered…
... missing and why would one replace a capacitor with two resistors?Another "untested" dead spectrum...Hi, I'm looking for some suggestions on a faulty Spectrum I have picked up. I'll need to wait until tomorrow before posting pics, but the screen is …
... /> Check transistors TR4 and TR5. Replace all the electrolytic capacitors, assuming ... fails because of a bad capacitor. Check none of the power ...Dot crawl?Hi, As I'm rather new to the hardware of the spectrum, just to confirm: is this video showing "Dot crawl" ? [url]https://www.youtube.com/watch?v=_U…
You can adjust the ULA clock frequency on an Issue one or Issue two Spectrum by adjusting TC1. On the others it is fixed; you would have to replace a capacitor.Burned finger temp on rubber 48k heatsink normal?Ok so i opened it up because a few keys started to act up and i noticed that after burning my hand the heatsink was that hot i could actually smell t…
... there is a fairly big capacitor that I should also consider ... .
I usually do replace it in the supplies I ...Burned finger temp on rubber 48k heatsink normal?Ok so i opened it up because a few keys started to act up and i noticed that after burning my hand the heatsink was that hot i could actually smell t…
... it depends on what a capacitor does on a circuit board ... board... if I want to replace caps on a switching power ... any other choice since I replace caps on so many of ...1-resistor fix to +3 sound distortion issue - any feedback?I decided - with my Dad's help, since I am little less than a butcher when it comes to soldering - to fix my +3 sound issue. I noticed the less invas…
1-resistor fix to +3 sound distortion issue - any feedback?I decided - with my Dad's help, since I am little less than a butcher when it comes to soldering - to fix my +3 sound issue. I noticed the less invas…
... 330R), is to remove that capacitor C37. This acts as a ... .
Replace it with a 4.7nF capacitor to move the ... />
With the original 100nF capacitor the cutoff frequency is about ...Next step for fixing my speccy?Hi guys, I've picked up my faulty Spectrum aiming to fix it. So I followed the excellent JouledperCoulomb videos on Youtube for the basics and I am …
... 't know what an electrolytic capacitor is, leave well alone and ... a volt. At this stage, replace TR4/TR5 if you don ...
