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ZX Spectrum Test PCB I recently read about one of these (I think it may have been the Retroleum site but I am not sure) and I thought "What a great idea" . As pictured …
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lower left 2.64 ( 12v) .
Test Rig< ... br />
Pin 22 +12v reading is .87
Pin ... appears to be the 12v that is the problem I think -
Repair ZX Spectrum +2 black issue 1Hi all, after a long time i will try to repair a ZX Spectrum +2 black i found the last days i know for sure that CPU is damaged (already repla…
... not describe what the actual problem is yet...
If it ... ]here[/url], start with checking +12V at the TAE200 (IC9) pin ... -
Repair ZX Spectrum +2 black issue 1Hi all, after a long time i will try to repair a ZX Spectrum +2 black i found the last days i know for sure that CPU is damaged (already repla…
... you had checked +5V and +12V lines.[/quote]
hey ... am thinking is a rom problem)
thanks for your ... -
Issue with TV signal + Inductor Coil (16K Issue 2 Speccy)Hello guys, I just got a 16K Issue 2 Speccy from eBay. It was sold as not working so I knew there would be some work needed before it's working ag…
... the 7805 regulator, and the +12V and -5V supply voltages on ... program).
So the problem is in the video circuitry ... -
Spectrum 128k +2 Grey and DivMMC reader problemHi guys, I am trying to figure out why the DivMMC reader do not work on a Spectrum 128k +2 grey I grabbed recently over the net. What is for sure…
... similar problem. The reason was the electrolytic capacitor at the 12V line ... on the board. Although the 12V are not used for CPU ... a new one solved the problem.
Greetings Ingo ... -
Issue with TV signal + Inductor Coil (16K Issue 2 Speccy)Hello guys, I just got a 16K Issue 2 Speccy from eBay. It was sold as not working so I knew there would be some work needed before it's working ag…
... are better at decoupling the +12V supply to the DRAM chips ... existing 47nF capacitors. Hence the +12V rail is more stable. Reducing ... +12V line (which also feeds the video circuitry).
The problem ... -
ZX-Uno moddingStarting with ZX-Uno case modding I have not yet received my ZX-Uno yet (it is in the post) but I know that I will have to do at least one mod …
... : http://www.ebay.com/itm/12V-HDMI-DVI-VGA-Audio-LCD ... =AmmqUY
I gues one problem would be to take advantage ... -
Character wobbleHello, I have an Issue 2 board which shows vertical character wobble. This happens for a few minutes followed by a few minutes of character sta…
... from the machine with the problem to a known good working ... to the machine with the problem. Then test each and see ... ULA or stayed with the "problem" machine.
Assuming your ... be improved by upgrading the +12V decoupling capacitors C5 to C8 ... -
what components normally get taken out if you plug+unplug a joystick interface in with the power onwhat components normally get taken out if you plug+unplug a joystick interface in with the power on? i remember doing this a few times when i had …
... the ZX Spectrum, the biggest problem is the presence of the ... on the edge-connector (+12V, +9V, -5V and 12V AC). Some of ... outputs (it not being a problem that you see reported or ... -
Power supply voltage regulator circuitRelating to [url="https://www.worldofspectrum.org/forums/discussion/56142/"]this topic[/url] I have managed to acquire this little accessory, which I…
... short-circuit proof. Not a problem here since the 7805 behind ... Spectrum psu may put out ~12V unloaded, that is by no ... could very well be 10-12V due to a large ripple ... -
Finding a good (UK) external switch mode power supply for the basic 48k and 128k ZX SpectrumsThis idea has probably "done the rounds" by now . I think I have heard about it a bit late . This thread with look at replacing the original "heavy l…
... been modified). These require a +12V main supply, a +5V supply ... converter circuit to generate a +12V supply and a -5V supply ... problems due to a manufacturing problem.
I hope that ... -
Dk'tronics and other similar "add on" Speccy keyboards . What can be done with them and when?. The underlying assumption I am making here is that people who have them will want to "hang on" to them and may also want to get them working . But …
... polarity is not normally a problem.
There is a ... />
In the U.K. 12V cigarette lighter sockets were not ... -
RS232 connector dead? No light gun seenHello Today I tried to play some light gun games, which use a controller connected to the 431A socket which is labeled as "RS232" using a BT 4 co…
... in the supply to the -12V line. Although the light gun ... appropriate port (probably from the +12V line) and should drive the ... , I don’t think this problem with R137 will affect it ... -
RS232 connector dead? No light gun seenHello Today I tried to play some light gun games, which use a controller connected to the 431A socket which is labeled as "RS232" using a BT 4 co…
... in the supply to the -12V line. Although the light gun ... appropriate port (probably from the +12V line) and should drive the ... , I don’t think this problem with R137 will affect it ... -
General PSU repair guidesNot Speccy related. I'm just looking for a guide as such as to where to begin with a power supply repair. Realise this is a bit of an odd thing to as…
... USB load resistor or 6V / 12V vehicle lamp) does the voltage ... ?
One very common problem is degradation of the “start ... -
the loading screen.It wasn't so bad in the past, with all the colourful lines during the loading stage. But now that everything has improved so much it is kind of annoy…
... ? Is this an emulator problem or a problem with the type of ... -
They key "O" doesn?t work !!!Who can help me? I?m using the emulator 1.1 on my Jornada 680. It works correctly but there is one problem. The key "O" does not work.
Who can help me? I?m using the emulator 1.1 on my Jornada 680. It works correctly but there is one problem. The key "O" does not work. -
Spectrum Emulator 4 WinCE HELP PLEASE!I have the spectrum emulator v1.1 on my casio e-100 and it works fine and loads the games fine, but one big problem I have is that there is no real k…
... games fine, but one big problem I have is that there ... -
Warajevo compilerThere is a problem by Warajevo Z80-compiler. I want to compile files with the possibility of record and load. I use an option / TAPE (/ TAPE!). Ever…
There is a problem by Warajevo Z80-compiler.
... -
RealspectrumI have a small problem with the Realspectrum emulator. I run it in a DOS shell within Windows 98 and just once in a while it locks up when I run it. …
I have a small problem with the Realspectrum emulator. I ... . It's not a huge problem but it is rather annoying ... -
Idea about improving EmulatorHi, I got a bright idea today how to improve such excellent emulators a bit more. Okay, disassemblers are available in nearly every one new released …
... of new Spectrum Programms. The problem: I can not code very ... -
What about my PCI128?Hello guys... My problem is that I have the Soundblaster PCI 128 How can I read and record the games from the cassette recorder? I tried Warajevo, …
Hello guys...
My problem is that I have the ... -
refresh rate 60hz ??X128 is the best ZXSpectrum simulator of all... ...but have a problem: refresh rate is poor = 60hz... I have a Samsung 950p & Gforce256DDR and both i…
... all...
...but have a problem: refresh rate is poor = 60hz ... X128 with any switch this problem will be resolved...
Thanks ... -
Speedlock 5 & 6Is it really possible to convert a working VOC of a speedlock 5 or 6 game into a TZX ? The reason I ask this is because I have a couple of games tha…
... at all)
The problem seems to be with the ... />
Does everyone have this problem? There seems to be very ... -
PSI ChessHi, Anybody out there remember the game "PSI Chess" by The Edge? Well, there seems to be no problem finding a snapshot ot tape image for this game …
... , there seems to be no problem finding a snapshot ot tape ... -
Night GunnerThis is similar to the problem I had earlier with that Turtles game- maybe you can solve this one too. I load the game up, and I am asked to give a c…
This is similar to the problem I had earlier with that ... -
adventure gamesI always liked text adventures and the speccy had loads,my favourites were Robin of sherwood,,Espionage island,,emerald isle,,dracula,,secret of st b…
... off with lol...but the problem i did find with alot ... -
Football Director 128Sorry if this has come up before but having downloaded Football Director 128 when I try to load it it always seems to crash on the title page. Any o…
Sorry if this has come up before but having downloaded Football Director 128 when I try to load it it always seems to crash on the title page. Any one know what I'm doing wrong? Does anyone else have this problem?
Cheers!
Paul -
PimaniaHi, I have been trying to play PIMANIA but have run up against a problem. In order to start the game the first question says "A KEY TURNS THE LOCK".…
... have run up against a problem. In order to start the ... -
Problem opening Speccy gameI really want to play Fruit Machine Simulator 2.I have unzipped it onto my PC but when I open it in my emulator.It says it is an unrecognised file ty…
I really want to play Fruit Machine Simulator 2.I have unzipped it onto my PC but when I open it in my emulator.It says it is an unrecognised file type.Can I sort this out.I think it is an .ay file
John