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Dead 128K heatsinkUnfortunately my 128K heatsink died suddenly and with no apparent reason. I had the Kempston Pro interface connected and when i powered it on the ztx…
... " because its not an electrolytic capacitor, its ceramic (100nF). So can ... -
Dead 128K heatsinkUnfortunately my 128K heatsink died suddenly and with no apparent reason. I had the Kempston Pro interface connected and when i powered it on the ztx…
... talking about a regular ceramic capacitor right? Not like a precision ... -
Dead 128K heatsinkUnfortunately my 128K heatsink died suddenly and with no apparent reason. I had the Kempston Pro interface connected and when i powered it on the ztx…
... talking about a regular ceramic capacitor right? Not like a precision ... -
Can Anyone Identify Two Mystery Interfaces?I bought I bunch of sinclair items a while ago and I have two interfaces that I cannot find any references for. Can anyone help me out? I think one …
Definitly a uspeech, UHF stage probably removed as the trimming capacitor in the top right corner is missing. The large chip most left will be SP0256A-AL2. -
How to - ZX Spectrum Composite Video ModI received a link to this in my mail. [youtube]ls0DpzCmqjk[/youtube] A nice instructive video. I'm still leaving it to the experts though :-)
... solder wire (or 100~220uF capacitor) from incoming wire to RCA ... -
BBC Help?I refuse scour the interweb for hours looking for help in this, and i'm sure a few of you chaps own BBC's and/or have knowledge of the machine, so i'…
This basically happens to all BBC power supplies. The ancient paper smoothing capacitor just gives up and turns into a smoke machine.
Easy enough to replace.
[url]http://www.sprow.co.uk/bbc/howto.htm#powersupply[/url] -
I need a circuit building for a Videopac SystemCan anyone help me out and build this circuit? [URL="http://www.ozyr.com/rene/Download/g7000-AV-mod.gif"]http://www.ozyr.com/rene/Download/g7000-AV-m…
Oh you say that now Graz!
Circuit is built minus one capacitor.
Macc, please send me your address. -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... problems. I put a 22uF Capacitor across the power lines on ... -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... resistor value change and additional capacitor installed in the power supply ... -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... diode and a speed-up capacitor in parallel with the input ... -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... change and addition of a capacitor) as recommended in the service ... -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... too small. Also with that capacitor, a low pass filter is ... -
Spectrum +3, Issue 2...I have just had plonked on my desk a nice issue 2 Spectrum +3. I'm not sure if its 100% working yet, as I have not plumbed it into a telly. So, assu…
... mod you remove the 33pF capacitor C24 which couples the sound ... -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... a msge about the 470pF capacitor at RFSH:
- Needed when ... -
Opus Discovery issues!All happens at once when things go wrong eh? This time its the dual drive Opus, neither drive will read/write, motor spins, when formatting you can …
... find a large lying electrolytic capacitor 4700uF 25 V. The '-' side ... also is a large standing capacitor 4700uF 16V. From there +5V ... -
128 Heatsink Machine UpgradesThe title says it all - anything I can do to upgrade this machine? Thanks. I already have a PlusD and a DivIDE +..
... ).
That's cutting one capacitor only, here's some info ... -
Grey +2 video output and oddities.I've been experimenting with one of the above that I acquired years ago, but had just been buried at the back of a cupboard. I've connected it up to…
... this signal via a new capacitor between IC11, pin 4 and ... -
BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…
... has the added diode and capacitor wired 'in the air' near ... -
Should I sell a boxed ZX128 as original as possible?Normally I add stereo audio to all 128K ZX Spectrums I get my hands on. At this moment I have a couple boxed heatsink models waiting to be offered o…
[QUOTE=bverstee;595535]When this capacitor is disconnected, the composite video ... -
ZX Spectrum 128K composite video fixes in 1 documentI just finished my document with video fixes and improvements for all ZX Spectrum 128K models. Download it here: [URL="http://benophetinternet.nl/ho…
ZX Spectrum 128K composite video fixes in 1 documentI just finished my document with video fixes and improvements for all ZX Spectrum 128K models. Download it here: [URL="http://benophetinternet.nl/ho…
ZX Spectrum 128K composite video fixes in 1 documentI just finished my document with video fixes and improvements for all ZX Spectrum 128K models. Download it here: [URL="http://benophetinternet.nl/ho…
... -wire version and the inline-capacitor version), then WOS can host ...ZX Spectrum 128K composite video fixes in 1 documentI just finished my document with video fixes and improvements for all ZX Spectrum 128K models. Download it here: [URL="http://benophetinternet.nl/ho…
... -wire version and the inline-capacitor version), then WOS can host ...+2A not showing a pictureThis video explains the problem: [url]http://www.youtube.com/watch?v=1lySPQu7RbI[/url] I can't tune a better picture with the RF and the RGB only g…
The solution is: take the C64 away... No, just joking! I also think this may be a PSU or capacitor problem.+2A not showing a pictureThis video explains the problem: [url]http://www.youtube.com/watch?v=1lySPQu7RbI[/url] I can't tune a better picture with the RF and the RGB only g…
... may be a PSU or capacitor problem.[/QUOTE]
The ...128K heatsink no color in composite video and bad antenna outputI am currently repairing a ZX Spectrum 128K heatsink model. It gives no colors on composite video output, and very bad antenna output. I opened it a…
... , and try tuning that variable capacitor in the 17.7MHz oscillator ...ZX Spectrum 128K composite video fixes in 1 documentI just finished my document with video fixes and improvements for all ZX Spectrum 128K models. Download it here: [URL="http://benophetinternet.nl/ho…
... .
By removing the capacitor connecting the audio circuit to ...48K Issue 3, noisy display.Has anyone here experienced and been able to resolve a problem that looks like this: [URL="http://drizzle.zigg.net/ZX/ZX106-display.jpg"]Photogra…
... one (or maybe both), electrolytic capacitor from the powerbrick.