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Multiface One - brokenFor a long time I have had a Multiface One, that since I got it never worked. When I attach it to the computer (edge connector completely cleaned), i…
... chip is gone on the PCB. For what I see, it ... -
Spectrum dead: 8 vertical bars in alternating colorsI have been soldering on this basterd for a long time now. All IC's now have sockets (except the LM1889). I swapped all 4116's by types that are 100%…
... heat gun and now the PCB is slightly bend. But, for ... -
What's this hardware?[URL="http://www2.snapfish.com/slideshow/AlbumID=1351742020/PictureID=39192676020/a=1759991020_1759991020/otsc=SHR/otsi=SPIClink/COBRAND_NAME=snapfis…
... to 4 connections on the PCB labelled:
IN ...
Most of the PCB is 74HCxxx logic, there is ... is soldered to the PCB, so I cannot easily ... to be processed by the PCB.
Only ... indication on the PCB is:
"941020" ... -
KemPAY Interface for ZXHello everyone, ZX fans I comitted a new interface for ZX spectrum. It`s idea is not new but design and funcionality brings a little bit of freshnes…
... of it You solder KempAY pcb and insert desoldered Flash into ... -
Horror repair story...Today the (new) +3 had a strange issue: keys 6,y,h,n and 8,i,k were not working. Also, the internal drive sometimes was not 'visible' from the Loader…
... keyboard (membrane) on the main pcb.
Finally, after some of ... -
Repair options for my own dear old Spectrum 48k?Hello all, This is my first post to this wonderful forum, which is part of a truly great website! My name is Arnold, and I live in Utrecht, The Nethe…
... simple, just swap the entire PCB with one from a working ... to do: replace the entire PCB (at the expense of another ... -
Some ever noticed that +2A/+3 halts Z80 using WAIT?I mean: Anyone ever noticed that the +2A/+3 halts the Z80 using WAIT? All documentation I've read about contention state that the ULA halts the Z80 …
... the CLK signal from the PCB, and feed this pin using ... -
Help identifying hardware peripheralA few months ago someone gave me all their Speccy stuff. The Spectrum itself was broken, but I got with it quite a few useful peripherals. Among thes…
... the green connector). On the PCB there are quite a few ... -
group buys?I'm just curious if it has been tried here before. I mean I'm tempted to get the diagnositc board made up that Winston designed for example, maybe ot…
... .
So getting the PCB made up for it, I ... -
Where to buy solder lugs ?Where can I buy solder lugs for PCB like this ? [IMG]http://www.gjelberg.no/miscpics/solderlug.jpg[/IMG] Farnell required a way too large…
... I buy solder lugs for PCB like this ?
[IMG ... -
Can anyone knock me up a little RS232 circuit in a couple of days?I urgently need a circuit board that will read contact closures on a D-type and send out an ASCII character via RS232 as follows: On the input to th…
Sinclair ZXC3 FLASH ROM CartridgeI recently received mail about the new ZXC3 PCB which provides the unique ability to program it directly from the Spectrum without the need for an EP…
... mail about the new ZXC3 PCB which provides the unique ability ... />
--- 8< ---
The PCB supports a 128K FLASH ROM ... /> Full details on the ZXC3 PCB, the ZX Cartridge Creator application ...winston's diagnostics boardHi there Mr Winston I don't know if you remember I posted about your diagnostics board earlier and how i used a 7404 instead of the 2 mosfets, well I…
... and rebuilt based on your PCB design instead of the circuit ...48K Spectrum gone deaf?Hi Someone recently gave me a rubber-keyed 48k ZX Spectrum which they'd tucked under a bed for years and said needed repairing. I tested it using m…
... dry joints or melting off PCB tracks but I'm not ...Fan woes.And I heard a load sound in the night – as if something had fallen over, but I turned my computer off in the morning, and because it was open, …
... been flung onto the delicate PCB underneath. I can only assume ...Trying to fix Spectrum Issue TwoHello everybody, I bought from eBay three Spectrums - one is Issue Two and the other two are Issue 3. The Issues 3s look like they are working but t…
Remove +12 Volt itemsWhich items can be removed on a ZX48K issue 4b PCB if I don't need the +12 Volt? Micky
Which items can be removed on a ZX48K issue 4b PCB if I don't need the +12 Volt?
MickyNetwork with ZX48KA Network with ZX48K is possible but what kind of network is the best? Who sells ready network cards or PCB's? Micky
A Network with ZX48K is possible but what kind of network is the best?
Who sells ready network cards or PCB's?
MickyEPROM servicesAnyone ever heard of these people?. I bought a Spectrum add-on from ebay recently. There is an edge connector splitter, i.e. enables you to plug tw…
... currah microslot) and a small PCB with 2 switches and few ...ZX 48K issue 4a with ULA 5?I got a ZX 48K PCB. It works but it has a ULA 5. I thought on the issue 4a is a ULA 6 or later. Micky
I got a ZX 48K PCB. It works but it has a ULA 5. I thought on the issue 4a is a ULA 6 or later.
MickyZX 48K what kind of repair?I bought this ZX 48K PCB but what kind of repair is this? It is a issue 4A PCB. [IMG]http://file1.npage.de/006803/97/bilder/zx48k_4a_pcb.jpg[/IMG] …
I bought this ZX 48K PCB but what kind of repair is this?
It is a issue 4A PCB.
[IMG]http://file1.npage.de/006803/97/bilder/zx48k_4a_pcb.jpg[/IMG]
MickySo you need to double (or triple, or quadruple) the clock speed...No particular reason for posting this, other than I was looking at an eZ80 evaluation board that does this, and that jogged my memory of a project I'…
... be seen just below the PCB with the CPLD (the capacitor ...How to fix dc voltage on a 48+ psuAfter dinner, after a womble video out mod on a "new" purchased 48+ , just in the remaining time I tested the voltage of its psu and, surprise surpr…
... right word in English) on pcb for trimming the output voltage ...48 Issue 3b working but very hot ula and cpuSalve to everybody I bought from e*ay an Issue 3b 48k , fitted in a + case. Fixed the keyboard problem with a new keyboard membrane from good Rwap (w…
... in which the terminal enters pcb..... :-o
Must I further ...Spectranet news...Well, I've built up the first "production" board to validate the slightly changed PCB layout works OK, and the bug that was in the prototype board ha…
... to validate the slightly changed PCB layout works OK, and the ...Progress Sprinter resurrectionI've been digging through my HDD once again and found all the docs on the sprinter again (pcb files/schematics/solder plans/bios sources/software etc…
... docs on the sprinter again (pcb files/schematics/solder plans/bios ...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…
... as long as the PCB tied the upper address line ... from a scrap arcade PCB and fitted them on ... without risking damage to the PCB.
Of course ... CPU, and a proven PCB for all those components really ... any damage so potentially the PCB had this flaw from ...FS: Saga 1 Emperor keyboard add-onDear all, I've got a Saga 1 Emperor keyboard add-on for ZX Spectrum for sale. It's on [url=http://cgi.ebay.nl/290467514496]eBay[/url]. It has 67 ful…
... and the base, containing the PCB, is bolted to the bottom ...
