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help with broken +2 greyHello, the other day I was trying to record sounds from my grey +2 "sound" socket to an old cassette recorder. Suddenly the screen went to a solid…
... some measuring:
5v/+12v/-12v seem to be ok everywhere ... pin 11 of TEA2000 the +12v are clean, while in pin ... some high frequency over the +12v. I think that's for ... -
48K Speccy coilsHi folks, For once I don't have an issue, but I HAVE just reanimated two long-dead issue 2 speccies by rewinding their 12V coils after reading a c…
... 2 speccies by rewinding their 12V coils after reading a couple ... -
Redesigning the ZX Spectrum 128k - A lifelong dreamHello, I am myPinballs (Jim) and i run a small business here in the uk making replacement 8-bit hardware pcbs for arcade pinball games as well as…
... power 5v regulator
• Single 12v supply power in
• Modern ... -
Spectrum issue 4SI have an almost completely depopulated issue 4s board. Wondering what to do, repairs or spares? I hooked it up and the voltages are off, 5v is fi…
... about 0 I think and 12v is somewhere around 4v or ... -
Composite video ghost image on ZX Spectrum 128K +2Hi, I have a ghost image on the composite video out on my ZX Spectrum 128K +2 and have run out of ideas of what could be wrong. Does anybody have a…
...
- 10V on the TEA2000 12V input with no obvious ripple ... -
Upper memory issueZX Spectrum 48K, issue 2, boots fine. Lower RAM OK. When tested with the new test ROM in the Diagboard, for all upper RAM tests "FAIL" is shown. I…
... ]10,7V[/b] (should be 12V, very low)
4116 pin ... -
So what is wrong with this program ?Using those basic copying buffers routines I wrote this spiral animation, absolutely wasteful it is of memory yes, but I'm only just learning machine…
... last frame you see some noise which I can't figure ... -
bizarre error on a grey ZX Spectrum+2 - the long search for a small problemHi, I got a ZX Spectrum+2 that worked a bit but crashed while loading or running 128k games. I installed a 128k-test-ROM that told me about RAM fa…
... on this line). The +12V / -12V and -5V would have ... for connections between the 12V and the rest of ... is current on the 12V line. Therefore I desoldered ... electrolytic capacitor at the +12V line. I measured 32µ ... electrolytic capacitor on the 12V line was bad. One ... -
MP3 NeededHi all, I'm in a rock band and we're recording a track this coming Sunday. The song is about technology and an individual splicing his consciousness …
... , a wall of 80s data noise. This will be put on ... -
Speccy won't bootHi all, I've got an issue 3 48k that won't boot properly. When I turn it on, it either does one of the two following things, it either displays a …
... emits a repeating low beep noise.
When I use ... -
Name that loading noiseA friend has found some computer data on the B-side of a 7" record released in 1982, but can't work out what machine it's for. Have a listen: http…
A friend has found some computer data on the B-side of a 7" record released in 1982, but can't work out what machine it's for. Have a listen:
https://audioboom.com/posts/5538904-unidentified-computer-data-file
So far he's ... -
Making your own tapesTowards the end of last year [url=https://www.worldofspectrum.org/forums/discussion/53607/recommend-modern-1994-2017-games]I dropped in here to ask a…
... "B" puts out some horrible noise on the left channel, whereas ... -
Toastrack - faint monochrome displayHi all, I've got a Toastrack with a video issue on both RGB and RF. I get a faint monochrome screen: on one LCD display it is predominately white,…
... 'm getting about 2V, not 12V, so this is the likely ... -
Running a Spectrum from a battery...?Here's a bizarre idea that crossed my mind the other day: is it possible to run a Spectrum from a 12V battery? You see, I've got this strange idea…
... run a Spectrum from a 12V battery?
You see ... , seeing as it uses a 12V power supply rather than the ... -
+2 grey - datacorder on/off switch?Hi everyone. Building a simple on/off switch to power up/down the tape deck will eliminate the noise in sound output? Is this a safe approach or …
... tape deck will eliminate the noise in sound output?
Is ... -
Save video directly from ZX 48K hardwareWhat is the best "proven" way (bets quality) to acquire video from a Speccy 48K ? I have converted the the TV out into AV,,with the usual mod (wit…
... directly from it, without the noise introduced by the TV modulator ... -
Help with loading problems.I have a few games that have either started or have always had a problem loading. The main problem seems to be that they start to load ( the sound is…
... just does the usual loading noise, the flashing border colours are ... -
128K Toastrack (Noisy video output)Hello there guys! Need all of yours guides and advices. Some time ago I bought a nice looking 128K from eBay (motherboard v6K) and put it aside for…
... was:
Pin B23 -12V
[img]https://lh3.googleusercontent ... [/img]
Pin B22 +12V
[img]https://lh3.googleusercontent ... /> Obviously something is wrong with -12V, but I have no clue ... -
Drivers American vs British vs EuropeanAs many of you know I'm an expat and have been living in the USA since 2013 and if there's one thing I've noticed on the US roads is that the standar…
... you (with lots of engine noise) and stop at the lights ... -
+2/+3 replacement power supplyI'm getting a black keyboarded +2, it has no power supply so I'm trying to source a possible equivalent if i cant get a genuine one, I know an atx s…
... awesome but you need a 12v 10-15amp supply for that ... i don't think the -12v line is man enough 0 ... -output-power-supply-60W-5V-12V-5V-12V-suply-Q-60B-ac ... -output-power-supply-60W-5V-12V-5V-12V-suply-Q-60B-ac ... -
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…
... many colored bands of video noise with vertical black and white ... -
Trying to repair a Speccy 48k - No PulsingI've had this machine for ages. I'd I've been putting off fixing it for some time now. So a couple of days ago I pulled it apart and started prob…
...
- pin 8 - should be +12V DC, but was at about ... -
Question about emulators under Linux Mint.[b](*delurks*)[/b] Hi. I've recently started using Linux Mint, and I'm having trouble with a Spectrum emulator for it. (I'm also having trouble …
... half a second of white noise, repeating indefinitely.
IDo ... -
I can't get my +2B to work over RGB to SCART.Hi so I have a black +2B and no matter what I do I get a black screen using the RGB-SCART scart cable (specific for the model ) and I'm using a SCART…
... scart connector end I read 12v between pin 16 and 18 ... -
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…
... 'm getting some loud audio noise when I tune in the ... -
48k Issue 6a Very sick indeed.Hi Guys. I have a 48k Issue 6a board that shows a white screen with grey border. The white screen has three black squares spaced equally on the le…
... .7mV, 5V = 4.96V and 12v = .908V. I know that three ... -
+3 PSU fault, can it be repaired?First, i'm no electrical genius/engineer but can solder/de-solder when needed! Powered on my +3 today and the monitor was just flickering/breaking…
... PSU voltages first and the +/- 12v is OK but the +5v ... -
Games with help for deaf people?On another forum, there's a discussion about the lack of subtitles in some action games. But there are seemingly no game developers on that forum, an…
... that makes a lot of noise, then you can safely run ... or make as much noise as you like since the ... -
Help with transistor replacement in audio ampHi folks, I'd like to replace two of the transistors in my audio amplifier which I suspect are causing crackling noise in one of the channels. Ori…
... I suspect are causing crackling noise in one of the channels ... -
Character wobbleHello, I have an Issue 2 board which shows vertical character wobble. This happens for a few minutes followed by a few minutes of character sta…
... RAM) and also causing the 12V
line to rise to ...



