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"MONOCHROME": Magazine about ZX81 (issue 2 - 2012)[b]OK, seems like every subscriber got his paper copy. So, hereby I publish an electronic - PDF - version of "MONOCHROME" ZX81 magazine (issue 2 - …
... - version of "MONOCHROME" ZX81 magazine (issue 2 - 2012).
[url]http://zx81 ... -
ULA6C001E-7 and 48K Issue 2Dear Sirs, Could you please let me know if ULA6C001E-7 or ULA6C001E-6 chip was suitable for 48K board issue 2 ? I heard some mods are neccessary…
... was suitable for 48K board issue 2 ?
I heard some ... -
Issue 2 Failed 48k to 128k upgradeI have been trying to upgrade my Issue 2 with the help of Velesoft, using this schematic; [IMG]http://i764.photobucket.com/albums/xx284/arioch1973/4…
... been trying to upgrade my Issue 2 with the help of Velesoft ... -
16k Issue 2 board and DivIDE load errorsI today got an Issue 2 16k board (thank you PMSR) that i added the logic and ram on to get a 48k machine. However, I am unable to load software from …
I today got an Issue 2 16k board (thank you PMSR) ... -
Issue 2 headache!Ive got an issue 2 here that firstly had a blown regulator (fixed), now its reading as a 16k machine (its fully populated), ive replaced and socketed…
Ive got an issue 2 here that firstly had a ... whole upper RAM, still same issue, Paul Farrows RAM tester produced ... -
Successfully updated Issue 2 48k to 128k?Thanks to the donation by PMSR and through the very patient teachings of Velesoft, I have updated the Issue 2 to work with 128k. However. I have yet …
... Velesoft, I have updated the Issue 2 to work with 128k. However ... -
Issue 2 problemHeres a video of what happens when I fire up an Issue 2 board ive had hanging around for ages, this is with Paul Farrows RAM test cart in btw If this…
... when I fire up an Issue 2 board ive had hanging around ... -
Issue 2 video problemHello all, Need some help with an issue 2 board that I 'm trying to restore. I've replaced all the electrolytic capacitors, changed the voltage regu…
... /> Need some help with an issue 2 board that I 'm trying ... have no problems with another issue 3 board. My knowledge in ... -
Compatible Memory Chips for Issue 2 48K MotherboardHi I was wondering if anybody have a list of manufacturer chips which is compatible with the Issue 2 48K Motherboard, especially the upper 32K RAM.…
... which is compatible with the Issue 2 48K Motherboard, especially the upper ... must be used in the Issue 2, where Issue 3 will work with ... OKI. I just repaired an Issue 2 board and found that 7 ... -
ZX Spectrum 48k Issue 2 Faulty Ram?Hi, I have a faulty ZX Spectrum Issue 2 motherboard. Looks in very tidy condition. Though I'm getting random columns of blocks and flashing cursors…
... have a faulty ZX Spectrum Issue 2 motherboard. Looks in very tidy ... -
Issue 2 colour problemsHey all, I've got a slight colour problem with my Issue 2 Spectrum, as can be seen below: [IMG]http://www.bennyalford.com/images/issue2a.jpg[/IMG] …
... slight colour problem with my Issue 2 Spectrum, as can be seen ... trim adjustments available on this issue, but one further complication is ... -
Repairing a torn trace on an Issue 2 PCBI've found what I think could be the reason for my Issue 2 board not working properly... There is a torn PCB trace beneath one end of where a new ULA…
... be the reason for my Issue 2 board not working properly... There ... a very narrow channel between 2 other PCB traces. What I ... electronics repair, but see this issue 2 as a challenge!
Issue 2 crashes after about 30 minsHi Guys, I have an Issue 2 zx spectrum that seems to get graphic corruption after about half hour of playing, then finally falls over and crashes. …
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I have an Issue 2 zx spectrum that seems to ...Issue 2 with 5C102E + cockroach on eBay(Posted here and not sales as it's not mine :)) Came across [URL="http://www.ebay.co.uk/itm/151225493166"]this[/URL] earlier - early Issue 2 board, …
... /151225493166"]this[/URL] earlier - early Issue 2 board, complete with 5C102E ULA ...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…
... friends,
Today, sadly, my issue 2 board lost his 5c112 ULA ...New user with a dead 48k issue 2Hello all I've found my way here from watching some excellent youtube videos by Joulesper Coulomb in an attempt to fix a issue 2 rubber key 48k I bo…
... an attempt to fix a issue 2 rubber key 48k I bought ...48k issue 2I have an issue 2 spectrum 48k and wanted to know if i wanted to change the z80 is ther any fix so i dont have that 1 component hugging the z80 [img…
I have an issue 2 spectrum 48k and wanted to ...Seriously weird Issue 2 issue... (RAM-related)Hi guys; I have been trying to fix up my Issue 2 and have run across a bizarre issue that I haven't seen elsewhere in the forums. Hopefully one of …
... trying to fix up my Issue 2 and have run across a ... bizarre issue that I haven't seen ... the narrative:
Spectrum: Issue 2, 48k
Initial problem: Yellow ... tweaking of VR1,2 fixed the colour issue.
2. MEMCHK returned 32767 ...Spectrum Issue 2 - TR6 ReplacementI've just got my hands on an Issue 2 ZX Spectrum, that needed some repairs. The picture quality after doing a composite modification was pretty shodd…
... got my hands on an Issue 2 ZX Spectrum, that needed some ... top of the Z80 in Issue 2) has been broken off. I ...Dodgey R62 / D16 on Issue 2?Hello all, I am still beavering away trying to work out why my Issue 2 fails and after a much closer visual inspection I noticed what looks like som…
... to work out why my Issue 2 fails and after a much ... that R79 2k2 (Issue 6) or R62 15R (Issue 6) or R55 ... 56R (Issue 4 and less ...Issue 2 Spectrum - Black screenHi I have an issue 2 spectrum which I'm having some issues with. I bought it on ebay so have no idea of the history or how it came to be broken. Whe…
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I have an issue 2 spectrum which I'm having ... measured the resistance of pin 2 of the lower RAM and ... very low reading on pin 2.
I replaced the offending ... another note, I had an Issue 3 Spectrum that was also ...Issue 2 Upper Ram, Loading & ResettingI have a 48k Issue 2 Speccy and for the life of me can't track down what the problem is with it. I initially thought that some of the uppe ram ic's w…
I have a 48k Issue 2 Speccy and for the life ... known good ram from another Issue 2, same chips with same suffix ...48k issue 2 video issueHi folks. I am currently tring to fix an issue 2 board. I was getting the yellow greenish screen. (also there there is a lower ram fault with it i th…
... currently tring to fix an issue 2 board. I was getting the ...Whites are yellow - 48k Issue 2I have a 48k issue 2 that appears to be working fine. I've replaced all but 2 of the electrolytic caps (mostly because the 2 were not in stock at my…
I have a 48k issue 2 that appears to be working ... I've replaced all but 2 of the electrolytic caps (mostly ... because the 2 were not in stock at ... replace the two trimmers (TR1/2) - ZTX 313 I believe ... .
VR1/2 are 2k2 if I'm ...No colour - Issue 2 SpectrumThis one is driving me mad - any suggestions appreciated. I have an issue 2 Spectrum with no colour at all. I found the 12v rail was at just over …
... .
I have an issue 2 Spectrum with no colour at ... testing them on a different issue 2 board to verify it wasn ... 't have a fully working issue 2 board to check against at ...No colors on screen, issue 2.I have a 48k issue 2 with composite mod. When i first pluged it in after i bought it, the screen went yellow and after restart there were no colors a…
I have a 48k issue 2 with composite mod. When i ...Spectrum 128k +2 issue 2I am wanting a Grey 128k +2 issue 2 machine. Preferably working but doesn't matter too much if not as long as it is complete. Thanks
I am wanting a Grey 128k +2 issue 2 machine. Preferably working but doesn't matter too much if not as long as it is complete.
Thanks48K Issue 2 Spectrum showing exactly 16KI've acquired an issue 2 and it quickly became clear that only 16K of memory is available. I've read that some early 48K Spectrums with malfunctionin…
I've acquired an issue 2 and it quickly became clear ...Issue 2 48k Yellow DisplayHi guys. As the title says, I have an issue 2 that's displaying the typical yellow/green colour screen at switch on. The picture is clear and stab…
... title says, I have an issue 2 that's displaying the typical ... .
Tried to adjust VR1/2 trim pots, no difference..
Replaced VR1/2 with ones from another board ...
