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Spectrum 48k Fault - anybody seen this before?Hello, I have two 48k spectrums that exhibit the same fault. Black border, paper area is full of columns of wavey lines. I have posted a screen sho…
Hello, I have two 48k spectrums that exhibit the same fault. Black border ... anybody seen this kind of fault before that could let me ... -
Solution for overwritten stack in 48k SNA filesIt has been known for quite some time now that the 48k SNA file format has one serious fault, which is described in the file formats section on the W…
... that the 48k SNA file format has one serious fault, which is ... screen. In the time of 48k Spectrums the programmers were using ... /> (author of the ZX Spectrum 48k emulator) -
Spectrum 48KHi All I have a boxed 48k Spectrum, with pwer supply, that I no longer have any need for. As far as I know the only fault is that the keyboard is non…
...
I have a boxed 48k Spectrum, with pwer supply, that ... as I know the only fault is that the keyboard is ... -
Hardware fault - HELP!I bought a speccy 48K (rubber) on Ebay. I was delighted when it arrived. It was in PRISTINE condition, it looks brand new! However, the machine has a…
I bought a speccy 48K (rubber) on Ebay. I ... However, the machine has a fault. The seller has no idea ... that the machine has a fault, so I'm reluctant ... ...
So, the fault? Well, SOME of the keys ... conclude the hardware is at fault. A couple of questions:< ... -
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…
... Spectrum 48K doesn?t function anymore. It?s my own fault. Somewhere ... -
Spectrum +3 suspected memory faultHi, I've been using my +3 for the first time in a while and found that some games have problems with the display becoming corrupted and sometimes cr…
... . I've tested the first 48K in BASIC by poking and ... if the memory is at fault, and which chip?
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…
... gave me a rubber-keyed 48k ZX Spectrum which they'd ... believe this was a common fault back in the day, but ... unless there's an OBVIOUS fault - i.e. burn marks around ...Broken or upgraded ZX Spectrum 48kHello First i want to say hello to everybody. I have a new ZX Spectrum 48k in my collection. Seller said that it is broken (no picture). I have this…
... have a new ZX Spectrum 48k in my collection. Seller said ... or it is just some fault repair?
MaciekFS: Another 48k rubberFor the first time ever Ive managed to get a working 48k out of a dead memory situation, basically traced the fault out of the board, replacing chips…
... working 48k out of a dead memory situation, basically traced the fault ...Hi everybody! Need help trying to rescue a ZX 48K...Hi, since this is my first post, a bit of info about me: I'm an Italian guy, now living in Poland (Warsaw), informatics and electronic geek since…
... /> Now, about my little ZX 48K. I got this one as ... 32K expansion) to check if fault is related to them, but ...48K Spectrum - or repairI just got a massive bundle of new old stock games which I need to try. Problem is some of them won't load on my +3 (it's always been rather picky). …
... />
I have a 48K rubber key with replacement membrane ... there's a memory fault as games crash when ... />
a) My 48K spectrum repaired
or
48K spectrum
or
... just a known good spectrum 48K motherboard
...Difficult to find upper RAM fault.I've recently repaired an issue 3B 48K Spectrum that had a tricky to diagnose upper RAM fault, so I thought I'd post a report of what I found here. …
... 48K Spectrum that had a tricky to diagnose upper RAM fault ... suspiciously short for a 48K Spectrum. Using PEEK to ... This usually indicates a fault with the upper RAM or ... unable to find any fault by testing from BASIC ... couldn't reveal the fault from BASIC. I can ...Replacing Upper RAM in 48KHi Folks Well, my fun continues :) After sorting the display issues with this machine I found I couldn't load software meant for 48K machines. Havin…
... 't load software meant for 48K machines. Having followed the guide ... looks like an upper memory fault.
Before I start ...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…
... it to work as a 48K machine again. However, I still ... /> I can not find the fault, and I am starting to ...48K and wavy lines.It seems all Spectrum related things are breaking here at casa de Don Pedro. After the problem with my old ZX81, I went over to my issue 2 ZX Spectru…
... my issue 2 ZX Spectrum 48K. This one is also showing ... the "wavy lines across screen" fault I read about.
Diagnosing a strange software fault in a 48kHi, A friend gave me a 48k, which I am very keen to restore. The spectrum 48k was my first computer over 20 years ago and I owe my ability to code t…
... /> A friend gave me a 48k, which I am very keen ... to restore. The spectrum 48k was my first computer over ... little box.
The 48k I have been given is ...Yet another glitchy graphics 48kHeyo, I'm new both to the forums (sorry if this is the wrong forum) and to Spectra I'm afraid, picked up a 48k from a steam fair sale thingy (not th…
... 'm afraid, picked up a 48k from a steam fair sale ... it in this state! My fault for being impatient) but not ...DivIDE on spectrum 48kDear All, I ordered a DivIDE with kempston- and compactflash-adaptor for my 48K. Recently I met BVersteeg (the seller of thisDivIDE) at the retro co…
... - and compactflash-adaptor for my 48K.
Recently I met BVersteeg ... examening the kempston adapter the fault was found: one of the ...Spectrum 48k unstable Colours on Composite Video OutputHi, I?ve an Speccy 48k here which has an Composite Video Out Mod (The Video-Modulators power input is cut from the board). On this I get an unstabl…
... />
I?ve an Speccy 48k here which has an Composite ... do to find the hardware fault on this ?
Regards ...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…
... saw tonight while fixing a 48K issue 6 board.
48K board gets shorted. TR4 is ... likely possibilities:
1. A fault in upper RAM causing incorrect ... Z80.
3. Intermittent ULA fault (easily testable - since the ULA ...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…
... to look to resolve the fault with my issue two board ... . I have a working Spectrum 48k with a 3B board I ... anything similar sounding? Perhaps a fault on the LM1889N?
48K Upper memory issues?Having more issues with the 48K spectrum I just fixed that had the black screen in this thread [URL="http://www.worldofspectrum.org/forums/showthread…
Having more issues with the 48K spectrum I just fixed that ... as this is a different fault
Tried a couple ...48K keyboard problemI have a strange issue with an issue 2 48k spectrum. Hopefully you guys can point me in the right direction in finding the fault. For some reason t…
... issue with an issue 2 48k spectrum. Hopefully you guys can ... right direction in finding the fault.
For some reason ...48K Not booting properlyBought another faulty spectrum from Ebay. This one, when you turn it on, it looks like it's going to boot OK, but when it gets to the point where it…
... you would expect for a 48K spectrum.
I then tried ... I still have a memory fault somewhere? Anyone got any ideas ...Newbie with a faultHi all just joined after digging my spectrum out of the loft after 30 years, it was put up there because it had a common fault I remember from back i…
... because it had a common fault I remember from back in ... common fault.
Many thanks. btw its a rubber faced 48k, its ...48k noise problem..Hi guys, I need some hardware advice with my old 48k. The machine is VERY noisy - I've fixed the video noise by performing the 'composite' mod, but …
... hardware advice with my old 48k.
The machine is ... sure this is a common fault with these old machines, so ...Guess the video faultI've two dead flesh Spectrums, one a 16K issue 2 outputting white with a tinge of blue (not as extreme as photo shows) with two pink horizontal lines…
... pink horizontal lines and a 48K issue 4s outputting white as ... wrong? Is either a caps fault?
16k:
[IMG ... /s800/IMG_20150131_003431.jpg[/IMG]
48k:
[IMG]http://lh6.googleusercontent ...48K Issue 2 RAM issuesI have 48K issue 2 board (I've checked, the upper memory is present!). It's not very well. I've not attempted to diagnose one before, so please bear …
I have 48K issue 2 board (I've ... makes me wonder if another fault exists. It has been recapped ...Keys in 48k mode for SpecEmu 1.2?Hello all, Does anyone know how to get the " symbol to appear when in 48k mode on Spec Emu 1.2? As you can imagine, it's pretty essential to be able…
... " symbol to appear when in 48k mode on Spec Emu 1 ...48K protectionWhich games were 'protected' by loading a full 48K block of code so that no copy program could fit in to memory? I know of 2 by heard. Pole Positio…
... 'protected' by loading a full 48K block of code so that ...
