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48k no beeper soundGot a 4S that outputs no beeper sound but does output from the mic ok, replacement speaker?
Got a 4S that outputs no beeper sound but does output from the mic ok, replacement speaker? -
48k memory dump to 128k???Having problems getting a 48k snapshot to load into 128k mode using ZX Spin. Tried saving 48k memory as a binary file and loading it back in 128k mo…
Having problems getting a 48k snapshot to load into 128k ... Spin.
Tried saving 48k memory as a binary file ... and reloading TAP files to no avail.
Any ideas ... -
48K: Half of copyright message in the middle of the screen?!Issue two. Has 74LS08 over the Z80, but the ULA is 5C112E-3 (I think this should be a 5C102E??? - I have one, but I'm not sure if it is working, at l…
... 'm quite sure that the lower memory chips are ok.
no more and no less of the copyrigh ... ) working ULA, CPU, ROM and lower memory.
Two wires ... fallen of, so I have no idea what belongs were. It ... -
Near new condition 48k Spectrum for sale.I'm starting my spring cleaning with this. I have a Sinclair Spectrum 48k, bought many years ago but has had only about a week's use (at my then gir…
... I have a Sinclair Spectrum 48k, bought many years ago but ... is missing. There is no original box or other packaging ... test it. I have no idea if you can ... recorder itself. There is no lead to connect this to ... on collection the lot. No negotiations I'll bite the ... -
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…
... a issue 2 rubber key 48k I bought at a carboot ... and the voltages at the lower memory when turned on are ... -
48k temperamental loadingHi, Was using my 48k this evening using the Speccy tape app via my iPad as usual. First game loaded up ok, but then from there on in nothing at al…
... ,
Was using my 48k this evening using the Speccy ... for 15 minutes, tried again. No joy on the iPad but ... -
Plus board to 48kThis will sound daft to some no doubt, but is it ok to put a + mainboard into a 48k rubber keys one and expect the keys to work correctly? I have a …
... will sound daft to some no doubt, but is it ok ... put a + mainboard into a 48k rubber keys one and expect ... -
+2 no audio only loud buzzing/bass noiceHi all Anyone help me out please. My +2 grey has a loud constant bass'ey buzzing noise and I do not hear any audio from the machine. The noise does…
... machine. The noise does go lower and then back up when ... a game loads I get no music etc only the buzz ... -
Replacing Rubber Key Membrane 48k - IssueHi, I've replaced the membrane on my 48k rubbber keyboard. When I have the top and bottom loose, but wired up , all keys work fine. When I place t…
... replaced the membrane on my 48k rubbber keyboard.
When I ... of the keyboard. There's no debris in the connections, all ... -
Spectrum 48k ProblemsHi all Got my 48k today but it's playing up abit... First time i turn it on it was like this: [IMG]http://s26.postimg.org/hlg9d3f3d/IMG_20140830_…
... all
Got my 48k today but it's playing ... mean? I'm guessing the lower RAM is not very well ... -
Pictures of 48k ZX Spectrums Showing the Important Voltages[SIZE=6][B]Pictures of 48k ZX Spectrums Showing the Important Voltages[/B][/SIZE] [URL="https://farm4.staticflickr.com/3841/15005543009_7bcf3b3031_o…
[SIZE=6][B]Pictures of 48k ZX Spectrums Showing the Important ...
[*]The +12V (for the "lower" 4116 16k RAM chips, bottom ... -
48k Stops loading and resetsI've just fixed the problem I had with my Issue 2 Spectrum only showing 16k memory by replacing all of the upper ram. With that job done I've done a …
... try to load anything for 48k the speccy just don't ... load screen will display with no problem, then when it gets ... -
Issue 6 repair with a twist...(Starting with a slight grump - the forum ate my first attempt at this so this'll probably end up being a bit terse :)) I got a Issue 6 48K machine …
... I got a Issue 6 48K machine in a couple of ... diags were reporting both lower and upper RAM were ...
Now suspecting a lower RAM issue, I entered and ... and the machine was fault free and fully functional.< ... updated code will catch the fault.
One ... -
Sea Dragon on a 48KAnyone had This game working on 48K? The archive says it does, but no joy on emulator or hardware so far. Great game, used to play it on the Apple …
... on 48K?
The archive says it does, but no joy ... -
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…
... out that one of the lower RAM chips was faulty. ... this is an upper RAM fault.
As instructed I ... of pin 2 of the lower RAM and found 1 ... made no difference.
I then swapped some of the lower RAM ... the upper RAM and the fault stayed with those two ... -
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 ... -
Double keystrokes on zx spectrumHappy New Year everyone. I have this spectrum 48k issue 3b I?ve been working on now and then. I have replaced upper rams, installed a lower ram repla…
... everyone. I have this spectrum 48k issue 3b I?ve been ... replaced upper rams, installed a lower ram replacement module and it ... Internet for a fix, but no luck so far. Does anyone ... -
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…
... there there is a lower ram fault with it i think) I ... -
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 ... -
DivMMC Enjoy! Works on 3 of 4 48k Speccy's I own?Hey guys. I have a DivMMC Enjoy! Which is absolutely awesome! Love it to bits. It works perfect on three of my 48k Speccy's, but something isn't rig…
... perfect on three of my 48k Speccy's, but something isn ... lights up, but there is no sign of memory card access ... -
3.4 Inch TFT with 48k Spectrum....hmmm?Hey guys, So I have been playing around with the idea of using a small LCD with composite input for a 48k Speccy. I got hold of one of these relat…
... with composite input for a 48k Speccy.
I got ... that you can read everything no problem. Here's a vid ... -
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 ... -
Fully refurbished ZX Spectrum 48K boards incl. ULA- Including ULA (version that [URL="http://www.bytedelight.com/?p=41"]corresponds to the board issue[/URL] - click to find out more about ULA version…
... , 3B, 4A, 4B, 4S, 6A (no issue 2). If you prefer ... .bytedelight.com/?product_cat=zx-spectrum-48k-refurbished-boards[/url]
[/SIZE ... -
Seeking April fool article: turn 48k into 128kHi everyone! When I was about 11 years old (I think ?) an article appeared in a Spectrum related magazine. It turned out to be an April fool's joke,…
... ) to turn your ZX Spectrum 48k into a 128k. The analogy ... code to run in a lower address. When I finally got ... -
TR4/TR5 replacementHi guys, I've got another Spectrum I'm working on now - an Issue 4S this time. When I originally got it, I powered it up and did the basic tests a…
... work fine apart from a fault with the upper 32K of ... , there's another issue. It no longer turns on and displays ... ]. Testing the voltages on the lower RAM IC's show they ... are still wrong on the lower RAM IC's, so I ... -
Video ZX Spectrum+ 48k<span>Good day ... is a bit of time that I try to fix my zx spectrum ... I replaced the ram 4116, all electrolytic capacitors ... but the monitor loo…
... ? can you help me?
no attention to the two spots ... left, because it's my fault lcd.
http://i61.tinypic ... -
No RF signal from modulatorGot a bit of a strange fault. I've got an Issue 2 spectrum which the TV doesn't lock onto. The TV locks to other Speccy outputs.<div><br></div><div>I…
... a bit of a strange fault. I've got an Issue ... (working), but I still get no joy.
Does anyone have ... /> I only have a DMM, no 'scope or freq. counter. -
Interference noise on TV Hi my 48k arrived but after tuning in to an old crt tv all I get is electrical interference noise on the TV . Picture is perfect apart from the so…
Hi
my 48k arrived but after tuning in ... sound
Is this a fault with the spectrum , if so ... tried various aerial cables with no luck and fine tuned it ... -
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 ... the fix for yellow screen - no difference.
I'm ...
