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Possible design fault in +2A/+3 power pack. Fix?It's the second time a +3 power pack ceases to work when I make a short while using the scope to diagnose a +2A/+3 computer. And it's the second tim…
... work when I make a short while using the scope to ... I see that if I short 5V to GND, then there is ... -
A short horror filmHere is a link to the final part of the 'Olaf Trilogy': [url="http://s34.yousendit.com/d.aspx?id=2UBU5XN615TUB129QVXM1VTGD6"]http://s34.yousendit.co…
... is a 57Mb 4:30 short film. Totally improvised and all ... -
need help with (short) reviewsi'm trying to make web with complete archive of czech and slovak speccy games. at this point i have 100+ of them on my HDD and i add them slowly to …
... about game, rough evaluation and short (1 - 10 sentences) description for ... -
Amazing Short Type-InsHey all ! Been having some pretty stressfull days lately so I tought I would type in some games. There was a very nice type-in book here in Slovenia…
... type-ins which are extremely SHORT but still very playable or ... that we can see how short actually it is. You can ... -
5v Transformer.I've got a 5v 3A transformer, would this be ok to use with two 3.5 inch floppy drives?
I've got a 5v 3A transformer, would this be ok to use with two 3.5 inch floppy drives? -
Spectrum ethernet... step 1.1Yeah, a tenth of a step :-) Here's the W5100 board up and WORKING: [url]http://www.alioth.net/tmp/w5100-online.jpg[/url] This is called the "Get Th…
... to - there MUST be a short or an open somewhere. The ... a 3.3v chip with 5v tolerant inputs). -
a short story I read when I was youngI remember when I was starting to learn english, my teacher had a book that she brought from england filled with weird short stories and questions ab…
... from england filled with weird short stories and questions about them ... ...
one of the short stories never really came out ... the book itself, but the short story was about a man ... -
Trailler from my short film!I'm guessing most of you guys wont understand Portuguese, but here is the trailler from the short film I made in May. I'm dubbing it in english so I…
... is the trailler from the short film I made in May ... -
48K Speccy Repair Log.Some people may know my love for writing up my repairs of arcade PCBs on various forums so thought I would do the same for this little fella. Had th…
... each chip needs 12V, 5V and -5V and if the power is ... test, there are two types, short and long, long really means ... 8000 and FFFF and the short ram test failed with " ... line to logic high, ie 5V, the resistor is a ... this from being a dead short across the PSU which ... -
Broken keyboard due to broken ULARecalling csmith's thread about dead ULAs, a thread appeared in the Zonadepruebas (Spanish) forum regarding... a dead ULA, but only a partially dead …
... off rather than giving a +5v signal for 1, or 0v ... must have been an internal short circuit that made the ULA ... -
+2 grey 5v reg pinoutjust a quickie, had to buy a new 5v reg for the grey, now i cant remember which wire went to which pin! got brown red and black, im guessing the blac…
... , had to buy a new 5v reg for the grey, now ... -
Not worth reading really - unless you have some spare time(Mods if you want to move it please do it does have a sort of hardware theme and a couple of recommendations at the end :) About two years ago now I…
... crumbling keyboard membranes and busted -5v lines to get a working ... expert has been cut cruely short by my realisation I know ... -
Spectrum 48k PSU voltageI have been running into problems with my rubber key speccy. To cut a long story short I did a voltage check of my power supply. It seems to fluctuat…
... . To cut a long story short I did a voltage check ... this drops to about 4.5v. Needless to say the speccy ... -
How come 'short' games seem long to me?Just a quick topic regarding 'short' games. Rage has come in for some criticism for it being 'short' but it took my younger brother 4 full evenings t…
... a quick topic regarding 'short' games. Rage has come ... criticism for it being 'short' but it took my ... of comments about it being short - but I've ... - all of which were apparently short games.
I ... lot, and that modern 'short' games seem perfectly fine ... -
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…
... an
obvious complete short circuit anywhere in the various ... I can now measure +5V at all the RAM ... as I measure for -5V on a working model) ... measure ~5.5Kohms to the +5V rail.
Measurements ... br />
- WE is ~5V at all RAM chips (upper ... -
The short blocks loaded in Jet Pac(Hope this have not been previously discussed. If so, my apologies) Is there any reason why Jet Pac loads three short blocks after the main block? I…
... why Jet Pac loads three short blocks after the main block ... -
The rescue of a coil.The problem at hand was a known defect transformer from the switching convertor inside a Spectrum. Both windings are not interrupted and not intercon…
... , and shysah! 5 mm wire short! I wound with too less ... . 12V measures 11.98, minus 5V measures -4.94. The meltdown ... -
Issue 2 voltage troubleDear all, I got my hands on an old issue 2 from a friend. Price was close to zero so I did not hesitate to take it. After powering it up I was sur…
... to measure the usually problematic -5V and 12V supply. So what ... RAM or capacitors has a short cut and draws high current ... -
Repairing another Issue 2 48K Spectrum.I said at the start of the other thread that I've got another one of these and I've started investigating it. The board is more-or-less exactly the …
... working Issue 2.
-5V - 80K Ohms and rising. ... on the working one.
5V - 1.5K Ohms. This ... of the DRAMs. 5V was present, -5V wasn't and 12V ... not to be any short between the primary and ... whether either has any self-short.
That' ... -
Repaired some 128K's todayI have lot's of ZX Spectrums laying aside with some more complex defects. Today I decided to try to fix some of them. I thought: why not share my ex…
... The CPU did nothing although 5V, 12V and the clock ... a power problem: no 5V and no 12V, allthough ... I measured the resistance between 5V and 0V and it ... br /> I started cutting the 5V cupper lines to the ram ... resoldered all cuts, using short wires here and there, ... -
Easy but long or hard but short?I know some people prefer challenging, difficult games, no matter if they are short (so they are finishable), and other people prefer long, but easy-…
... , no matter if they are short (so they are finishable), and ... -
Spectrum +3 FavourCan a kind soul with a multimeter and a +3 measure the resistance on the power socket between the 5V and the ground? I have a dead +3 that only has 0…
... the power socket between the 5V and the ground? I have ... the 5V rail internally when powered up. Am suspecting an short somewhere ... -
Stealth AllRAM SpectrumHaving just received a couple of new keyboard membranes to fix a couple of machines with, the thought crossed me that I should do a special project w…
... unused address line always at +5v.
2. Dead cockroach ... itself is powered by soldering short wires to the Vcc and ... a quick test with a short program to make a striped ... -
Bombscare/Short's Fuse BT letterThis was posted over at my Ocean FB group in response to me posting some letters from Elite. Not sure if it's been posted here before but, if not, th…
... /> Rich Stevenson, the author of 'Short's Fuse', posted it and ... -
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 …
Kayleth - there is no short story with this titleNot clear, why everywhere is told that Kayleth is based on short story of Asimov with same title. There is no such thing at all. Even more, by me th…
... that Kayleth is based on short story of Asimov with same ... 's novels (and lot of short stories too) back in the ...ZX Spectrum 48K Issue 3, loss of -5V rail.Hi all, I've googled this problem and poured over the electrical diagrams for the circuitry concerning the power supplies and I believe I know what …
... present and correct except for -5V which measures at -0.18V ... cause me a loss of -5V anyway). All diodes function correctly ... % clear to me how the -5V is derived, but I'm ...Powering a Spectrum with 5v?I live in the States, but I'm originally from England. My original Spectrum is still at my mum's house in the UK, and I was thinking of asking her t…
... is actually regulated down to 5v (and a lot of heat ... regulator, and inject a regulated 5v into where the voltage output ... regulator was?
Regulated 5v PSU's are everywhere, because ... a PAL input, so a 5v mod and a composite mod ...5v reg replacementHi all, Have been playing with one of my Issue 2 Spectrums and decided to replace the 5v regulator & heatsink with this wee switching reg I had lyin…
... and decided to replace the 5v regulator & heatsink with this ...