-
Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... plane *will* be carrying high voltages. [/QUOTE]
I find ... -
Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... zero potential. The power supply voltages of +5 and +12V will ... -
Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... zero potential. The power supply voltages of +5 and +12V will ... -
Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... result, there will be small voltages across them (volt drop). If ... -
Spectrum +2A PSUI picked up a black +2A without a power supply. Looking on eBay the PSUs seem quite rare. The schematics for the PSU show +/-12 and 5v, would it be …
... a good idea. The output voltages are only in spec when ... to output the main supply voltages.
[I][B]Mark ... -
Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... revision board to compare some voltages and perhaps start swapping components ... -
Spectrum +2A PSUI picked up a black +2A without a power supply. Looking on eBay the PSUs seem quite rare. The schematics for the PSU show +/-12 and 5v, would it be …
[QUOTE=1024MAK;740456]The output voltages are only in spec when ... to output the main supply voltages.[/QUOTE]
That would be ... -
Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... /> Not sure what the breakdown voltages are of things in the ... -
Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... chips that work off multiple voltages (which can be damaged by ... absence of one of these voltages) so the general advice of ... -
Interesting 48K failureI thought I'd recount a failure I've not seen mentioned before that I saw tonight while fixing a 48K issue 6 board. The background: The initial fail…
... the machine will run without TR6 (albeit incorrectly).
I ... -
Interesting 48K failureI thought I'd recount a failure I've not seen mentioned before that I saw tonight while fixing a 48K issue 6 board. The background: The initial fail…
... to be that the "spider" (TR6) is needed so that external ... work fine with the "spider" / TR6 missing :D
[I ... -
128K RGB Display problem.I have just got my hand on a toast rack, but when powered and connected to the telly the picture jumps horizontally at random intervals. Could it be…
... is to do with the voltages required on pin 8 and ... 4:3 aspect ratio signal. Voltages less than 4.5V may ... -
128K RGB Display problem.I have just got my hand on a toast rack, but when powered and connected to the telly the picture jumps horizontally at random intervals. Could it be…
... is to do with the voltages required on pin 8 and ... 4:3 aspect ratio signal. Voltages less than 4.5V may ... -
Using a Euro Sinclair PSU in UKI've got a EURO1400 PSU with a Euro plug. Am I right in thinking I can just cut the pug off and change it to a UK plug, and it will work fine? The on…
Single phase AC Supply voltages are 'harmonised' now across Europe / ... keeping in mind that mains voltages in places near to large ... -
Using a Euro Sinclair PSU in UKI've got a EURO1400 PSU with a Euro plug. Am I right in thinking I can just cut the pug off and change it to a UK plug, and it will work fine? The on…
... keeping in mind that mains voltages in places near to large ... -
Born again Speccy user with problemsHello all, Firstly I'd like to say a big hello - this is my first post! When I was 8 or 9 or so my dad bought a ZX Spectrum 48K and a whole bunch o…
... speaker output during saving - the voltages are too low to bring ... -
IF1bis StabilityI just thought I would start a different thread relating to the IF1bis, and leave the copyrighters to it elsewhere...:-P I've had mine for a few mon…
... I am talking about, the voltages used are between 5V and ... -
composite woessince I'm replacing a load of membranes , I decided to composite mod the machines also at the same time.. but am not having much joy with rubber key …
Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
Joy pad controllers for spectrumI want to know if anyone knew if there was any joypad controllers out there for the spectrum +2. I am usless at using a joystick and as i used ot us…
... read above about two different voltages in kempston interfaces? Will this ...Faulty 48+Hi I picked up a pile of Spectrum kit including a boxed "untested" 48k+ The Speccy boots to this screen... [IMG]http://www.scotek.net/zx spectrum/…
... . Are all the power supply voltages present? Look up the 4116 ...Help with an issue 2Hello friends, Today, sadly, my issue 2 board lost his 5c112 ULA, and on my spares list I only had a 6c one that worked fine after swapping it. Now I…
... to the PCB layout instead (TR6 between the logic chips IC4 ...48k Missing D15Got a 48k here that is missing D15 (just below right molex connector), someone removed it in the past, only just noticed it was gone after replacing …
... power and test for good voltages
... The rest you ...external drive +3I recently bought an external drive kit for my +3 [url]http://www.ebay.co.uk/itm/111267120287?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649[/ur…
... interface, which has all the voltages (+5V, +12V).
Care ...Issue 3B suddenly goes black and whiteAnother 3B I have here had a faulty ULA, swapped that out for another and hurrah! Works! New keyboard membrane and composite mod later I load a game…
48k+ ULA'sI've got three ULA's here that only work in certain boards. Thought I was going nuts, swapping, changing stuff around. But hey, I've got two working …
... on the PCB directly as TR6.
[*]6C001E-7: Improves reliability ...PSU Overvoltage?Going through a pile of 48k PSU's today, rewiring and fitting new plugs, testing each one as I go I came across one that outputs 14.85v, usually im g…
... can have slightly different output voltages with the same test load ...Grey +2 DiedHi all, Thrashing my +2 playing Mugsy last night and it did this... [URL="https://m.flickr.com/photos/83515822@N05/13012551693/lightbox/"]https://m…
... , starting from the regulator? Then TR6? etc?Grey +2 DiedHi all, Thrashing my +2 playing Mugsy last night and it did this... [URL="https://m.flickr.com/photos/83515822@N05/13012551693/lightbox/"]https://m…
... [/URL] first, then check 4116 voltages (48K only) - remedy any faults ...48k+ ULA'sI've got three ULA's here that only work in certain boards. Thought I was going nuts, swapping, changing stuff around. But hey, I've got two working …
... on the PCB directly as TR6.
[*]6C001E-7: Improves reliability ...
