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Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... /> I found a good video here on hole replacement:-
[url ... -
"Made by the ton" softwareGag time The obvious one is "Make a chip" Published by Sinclair Research and written by Incognito Software . For some reason this was produced…
... a small independent computer/TV/video shop) came with Horizons, the ... 've managed to buy a replacement copy from eBay though, so ... -
Better keyboard = better sales ?Just a random thought. I want to start this by saying although I did not have a + model new, I was never really a fan of this keyboard as it was n…
... or perhaps something like Inv Video and have it 'miss' the ... />
I had overlooked the replacement keyboard market actually in my ... -
New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…
[b][u]S-video mod to ZX Spectrum[/u][/ ... cut needed.
Desolder capacitor C65 (22uF). Keep this safe ... signal then goes to the capacitor that was formally C65 (22uF ... ). The other side of this capacitor has a junction with two ... -
New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…
... signal then goes to the capacitor that was formally C65 (22uF ... function or polarity of the capacitor. We are simply just moving ... PCB to a new 'S-video' board. It then feeds the ... -
New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…
... troubles with this S-video mod unfortunately. I decided ... to have the s-video cable hardwired to the ... has fried into the video circuitry of the Spectrum ... been damaged apparently but S-video has gone.
... scratch and replace the capacitor with a new one ... -
Which to buy? +2/+2a/+3?Sorry - I did a quick bit of lunchtime googling, it sounds like the grey +2 is the best machine, as it has the board without the reduced chipset. I …
... output, no composite video output, lack of replacement part for the brain ... -
New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…
... being important for an S-video connection.
For areas ... difference when using an S-video connection.
Although it ... only changes are to remove capacitor C65 and to cut or ... input connections to the modulator (video I/P and the +5V ... -
New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…
... being important for an S-video connection.
For areas ... difference when using an S-video connection.
Although it ... only changes are to remove capacitor C65 and to cut or ... somehow incompatible or my s-video to bnc-cable (self made ... -
New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…
... looking to get a s-video output on my Speccy plus ... c65 on here) to S-video female socket
[img ... does work and the s-video being quite clean the color ... worse when using an ULA replacement like the NebULA (red becomes ... -
New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…
... am running two 48K s-video modded spectrums (board issues 3B ... recap the machine, use modern replacement modules for upper and lower ... -
Replacing voltage regulators - need to sanity check a few things pleaseHi Everyone I'm in the process (with a lot of help from some friends at Greenford Computer Club), of giving my three Speccys some much needed prev…
... doing that (straight wire connection, capacitor etc). would be greatly appreciated ... moment the +2's had video out on the edge connector ... 48K and I did the capacitor version. I did not follow ... -
Replacing voltage regulators - need to sanity check a few things pleaseHi Everyone I'm in the process (with a lot of help from some friends at Greenford Computer Club), of giving my three Speccys some much needed prev…
... you want to perform the video mod "the more complex way ... above I'll do the capacitor composite mod once I'm ... -
Replacing voltage regulators - need to sanity check a few things pleaseHi Everyone I'm in the process (with a lot of help from some friends at Greenford Computer Club), of giving my three Speccys some much needed prev…
... that (straight wire connection, capacitor etc). would be greatly appreciated ... 2 (grey) already have composite video outputs on the monitor/RGB ... independent of the composite video and RF/UHF TV ... are derived from the RGB video signals...).
For ... -
Replacing voltage regulators - need to sanity check a few things pleaseHi Everyone I'm in the process (with a lot of help from some friends at Greenford Computer Club), of giving my three Speccys some much needed prev…
... you want to perform the video mod "the more complex way ... above I'll do the capacitor composite mod once I'm ... we will definitely do the capacitor mod.
Regards power ... -
+3 - beeper sounds but no AY musicHi guys I am repairing a plus 3 revision 2 board that had no sound at all. Using schematics from https://zxnet.co.uk/spectrum/schematics/ I manage…
... .
I have a replacement MC1376 but it'll be ... the RF output for the video, you could use those as ... -
Rod-land - struggling to get working on my real +2 (grey machine)Hi Everyone, I've had a week enjoying tinkering with my +2 and there are only a few games I have not managed to play on my +2 that I enjoyed back …
... should take note of every capacitor on the machine so that ... while in the colored bars video pattern shown by pressing BREAK ... -
Composite out, but without a mod?Through [url="https://faqwiki.zxnet.co.uk/wiki/ZX_Spectrum_16K/48K_edge_connector#Video_Outputs"]this[/url] page, it sounds like I can keep my ZX Spe…
... , but pick-up the composite video out signal from the expansion ... Spectrum’s non-standard composite video signal. Sometimes it’s possible ... by installing a capacitor in series with the composite video signal, but ... -
Composite out, but without a mod?Through [url="https://faqwiki.zxnet.co.uk/wiki/ZX_Spectrum_16K/48K_edge_connector#Video_Outputs"]this[/url] page, it sounds like I can keep my ZX Spe…
... there will be no video signals on the expansion edge ... />
The monochrome (/Y) video signal on the edge-connector ... match the impedance to consumer video equipment.
The ... video signal is already buffered, so may just need a 100uF capacitor ... -
Composite out, but without a mod?Through [url="https://faqwiki.zxnet.co.uk/wiki/ZX_Spectrum_16K/48K_edge_connector#Video_Outputs"]this[/url] page, it sounds like I can keep my ZX Spe…
...
[quote]The monochrome (/Y) video signal on the edge-connector ... the impedance to consumer video equipment.[/quote]And by ... video signal is already buffered, so may just need a 100uF capacitor ... a specific ground for the video signal?)? And 100uF? That ... -
Composite out, but without a mod?Through [url="https://faqwiki.zxnet.co.uk/wiki/ZX_Spectrum_16K/48K_edge_connector#Video_Outputs"]this[/url] page, it sounds like I can keep my ZX Spe…
... video equipment, as they already have a built in coupling capacitor ... video equipment does not have a built in coupling capacitor, ... then the composite video output from the ... a 100uF 16V electrolytic capacitor (positive lead goes to ... -
Recapping parts list needed for +2a power supplyHello I've recently acquired a +2a power supply. It works, but given the age I'd like to do some preventative maintenance and refurbish it. Does a…
... general, for most use cases, replacement on failure is not a ... are symptoms of a electrolytic capacitor loosing capacity, or it’s ... see or detect symptoms of capacitor failure.
However, ... examine each and every electrolytic capacitor. If I am not ... -
Recreated Spectrum .What do we get for the "now" (Aug 2017) best retail price of around £35?Well best/ cheapest retail prices can vary a bit so I thought it best to be specific. At this £35 price ,is it a good deal and what do we get ? A…
... soldering up my new audio/video output for the PI Fuse ... too much to get a replacement! -
Need some help building a cable for Spectrum 128k +2 to US Commodore 1084S-PHello WoS users! Does anyone have a diagram detailing how to build a cable to go from the Spectrum 128k +2 (grey) to a Commodore 1084S-P (US version…
... and bridging another ceramic disc capacitor over to the leg of ... remove the audio from the video circuit. I didn't see ... -
Finding a good (UK) external switch mode power supply for the basic 48k and 128k ZX SpectrumsThis idea has probably "done the rounds" by now . I think I have heard about it a bit late . This thread with look at replacing the original "heavy l…
... recommend that the electrolytic smoothing capacitor(s) be renewed. In ... units, a replacement 4700uF 25V 125°C capacitor will cost less ... But if the electrolytic smoothing capacitor(s) dries out, an ... br />
The new / replacement SMPSUs are not immune from ... -
Finding a good (UK) external switch mode power supply for the basic 48k and 128k ZX SpectrumsThis idea has probably "done the rounds" by now . I think I have heard about it a bit late . This thread with look at replacing the original "heavy l…
... my Plus and modded the video output, which is all working ... -bits suffer from the same capacitor problems as the speccy? Although ... -
Finding a good (UK) external switch mode power supply for the basic 48k and 128k ZX SpectrumsThis idea has probably "done the rounds" by now . I think I have heard about it a bit late . This thread with look at replacing the original "heavy l…
... with the three terminal 7805 replacement DC/DC converter regulator talked ... failure or when symptoms of capacitor aging appear.
Some ... />
Also if an electrolytic capacitor runs warm or hot, or ... -
The Different Approaches To Upgrading the ZX Spectrum from 16K to 48K This is probably something that has been covered before . I will take a look to see if I can find anything on WOS
... covers lower RAM replacement in this You Tube Video (towards the end ... -
Modifying a speccy to +5v only operation.Just a thought experiment so far. Let's say i wanted to make a more resilient spectrum by getting rid of the DC-DC converter circuit. This would remo…
... ;57288"]But what about the video circuitry (LM1889) and the edge ... Traco 5v 7805 switch mode replacement, i guess i could fit ... -
48K ZX Spectrum 48K Recap (Capacitors) Or Not?I have seen arguments "for an against" on this subject by some "high calibre" experts . So if the experts can differ on this question then my questi…
... symptoms of a possible electrolytic capacitor failure, I’m not saying ... may see a less noisy video picture. But some ZX Spectrum ... have some noise on the video picture even after all the ...
