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Faulty M1 linesI'm sure this has been discussed before, but using the forum search for the word 'M1' pulled back no hits, which surprised the hell out of me. Anywa…
... /> Anyway - which Z80s had the faulty M1 lines, and what was ... -
Faulty +2 Grey :(Hello everyone... i was trying to fix a +2 grey board the other day, i had it for some time now. It gave a black screen (paper and border) with two …
... in order to test the faulty one's chips.
After ... i came up with one faulty one so i put a ... -
Faulty M1 LineHello, I've got a new DivIDE but it's not working with my Spectrum 48k+. I've got a sneaking suspicion that it's a faulty M1 line. Is there any way …
... suspicion that it's a faulty M1 line. Is there any ... -
issue 6a faultyHi All I got issue 6a pcb from ebay with status faulty pcb had bad voltages when I power up I changed tr4 ztx650 and all voltages got back on ic6 I h…
... pcb from ebay with status faulty
pcb had bad voltages ... -
faulty zxspectrum +hi all i just bought a speccy 48k+ off ebay it worked for like 15 mins now it is stuck on the reset screen. I fear this is something major maybe fau…
... this is something major maybe faulty ram or the ULA. Does ... -
Sinclair ZX 48K rubber keyed faultyI bought a faulty Sinclair ZX 48 K. Power on and the screen shows only 4 vertical white bars. Nothing other happend. I swapped the ULA and it is ok. …
I bought a faulty Sinclair ZX 48 K. Power on and the screen shows only 4 vertical white bars. Nothing other happend. I swapped the ULA and it is ok. PSU is already ok.
Any idea what's wrong?
Micky -
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…
... . These are the infamous half faulty DRAM chips, they are actually ... , so a large number of faulty chips rolled off the production ... the 8 DRAM chips, a 74LS00, a 74LS32 and a pair ... -
Faulty +2AHi! I have a +2A from a friend which is not working. I recently made a composite video output for it, using a small circuit from Sami Vehaama. When …
... /> I think the ULA is faulty... but it could be memory ... -
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…
... or perhaps a
partially faulty CPU.
Any ideas ... -
Faulty Interface one, IF1Dear all, as I have already mentioned in a different thread my IF1 stopped working for no special reason. I went through the service manual and chec…
... ( on an other Speccy)
- Faulty IF1 do not work on ... -
Faulty rubber speccy - advice neededHello all speccy hardware gurus :) Recently I moved to a new flat and after a long time have some space (and time) to dig out my old Speccy hardware…
... that the ULA from the faulty mbo worked fine in the ... 20k, which should suggest a faulty chip.
So, I ... -
Faulty +2 advice please :)Hi all , I have a faulty +2 which when powered up gives a black border and 6 black and White stripes , I'm thinking faulty ram ??? Any one have any b…
Hi all , I have a faulty +2 which when powered up gives a black border and 6 black and White stripes , I'm thinking faulty ram ??? Any one have any better ideas :)
CodenameV -
Faulty dk'tronics keyboardSome time ago I bought a Spectrum 48K in a dk'tronics keyboard, along with a built-in Interface 1 and a pair of Microdrives. It's quite the Frankenm…
... just need to desolder the faulty keys, remove them, and hopefully ... -
Faulty French +2 grayA friend of mine has a faulty french +2 grey model. The picture its giving out is this... [URL=http://imageshack.us/photo/my-images/19/post2036357600…
Spectrum zx (faulty) games, joystick, tape playerSpectrum boots up but sticks on copyright screen - told this is a keyboard fault. Otherwise in good condition. All manuals (VGC) leads PSU etc Joys…
... /p/for-sale/sinclair-spectrum-faulty-tape-player-joystick-and-games ...another faulty zx spectrum +2 to fix!!!Hello to all, I'm new here... I have got a faulty +2 (gray) and start to try fix it... I have read the treads of xaris_sm and Pluto63 as background…
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I have got a faulty +2 (gray) and start to ... completely dead (and not only faulty), now I know that it ...Faulty 48K Issue 3 motherboardHi I have a faulty Issue 3 motherboard and would appreciate it if somebody can steer me in the right direction of where to begin with the fault find…
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I have a faulty Issue 3 motherboard and would ...Another faulty Quick Shot 2 JoystickI don't seem to be able to buy one that works, either the stick mechanism is faulty or the trigger fire button is faulty, my latest as just cost me ?…
... , either the stick mechanism is faulty or the trigger fire button ... is faulty, my latest as just cost ... the trigger fire button is faulty and theatticbug described it as ...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…
Hi, I have a faulty ZX Spectrum Issue 2 motherboard. ...Faulty(?) ZX81 plus ZX8-CCB boardHello, I have an apparently faulty ZX81 with a ZX8-CCB video out board for sale. It was working last time I had it put together, around this time las…
Hello, I have an apparently faulty ZX81 with a ZX8-CCB ...Free Faulty Original Sinclair ZX81 16k Ram expansionI bought this on ebay, was found to be faulty, when plugged in the screen froze and the "K" vanished. Thanks to a forum member I now have a workin…
... ebay, was found to be faulty, when plugged in the screen ...Video fault on issue two ZX boardI've trawled the Internet and drawn a few blanks as to where to look to resolve the fault with my issue two board. I'm hoping a few of you knowledgea…
... tell (the membrane is partly faulty on the keyboard so no ... features the spider or cockroach 74LS00 modification to the ULA5C102E, which ...Sinclair PC 200 Error: Faulty SYSTEM serial portHi guys, this is my first post but not a happy one. I have bought 2 weeks ago an Sinclair PC200, when powerd up it shows the following message: "[B]E…
... the following message: "[B]Error: Faulty SYSTEM serial port[/B]". Any ... this? Could be an mc1489a faulty chip? I would love to ...The Tripods C64 version / faulty Spectrum copies?I'm an occasional contributor to the website 'Games That Weren't' which researches unreleased games, particularly for the C64. One game they're looki…
... ? Or do you have a 'faulty' Spwectrum copy in your attic ...Upper memory issueZX Spectrum 48K, issue 2, boots fine. Lower RAM OK. When tested with the new test ROM in the Diagboard, for all upper RAM tests "FAIL" is shown. I…
... of the 74LS00-solution, I think that was for a faulty ULA ...Faulty DRAM chips wanted!If you have any suspect or known faulty DRAM chips, I'm after some so I can conduct some testing. I only want chips that are DIL type, either 16 p…
... have any suspect or known faulty DRAM chips, I'm after ...zx microdrive faulty/broken/not working/deadi'm looking for a faulty none working even dead microdrive if anyone has one they would part with
i'm looking for a faulty none working even dead microdrive if anyone has one they would part withProblem with replacing all upper memory with 4164 chipsGuys, i have a problem with the high memory of a 4B issue. At first the board had OKI chips for high memory and one of them was faulty. Since its ea…
... 74ls157 ( IC25 / IC 26) or 74LS00 (IC24) or 74LS32 (IC23) were ... working speccy, shows the same faulty symptoms so it can't ...