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Spectrum 48k - Many ProblemsHi, I'm new to the boards and to owning a Spectrum, and sadly, it doesn't work properly. I'd been using an emulator for a while but I decided I'd lik…
48K needs the internally generated 12V to produce video. -
ZX Spectrum + Revision b Power IssueHi all, I'm trying to repair a ZXSpectrum + revision 3b and at the moment the -5v is missing from the board. I've replaced the TR4 and will be soon…
... switch (hence its name). The coil is the inductor and the ... -
ZX Spectrum + Revision b Power IssueHi all, I'm trying to repair a ZXSpectrum + revision 3b and at the moment the -5v is missing from the board. I've replaced the TR4 and will be soon…
... />
I also tested the coil. On a friends working zx ... got the -5v on his coil. On mine it is producing ... to replace would be the coil and TR4/5?
ZX Spectrum Power SupplyHi All, I've come across a power supply that is currently registering 14.5v before it is plugged into the Speccy. I have another one that registers…
... necessary. ;)
The nominal 12V input is a "sweet spot ...zx spectrum 128K+2(gray)-vanishing colorsHi, I just got "new" zx spectrum 128k+2(gray) made in uk version. Beside tape dead and memory issue - only first 16k RAM works in 48k mode, it has s…
... colors can be TEA2000 or... +12V line issue. But I'm ...ZX Spectrum Power SupplyHi All, I've come across a power supply that is currently registering 14.5v before it is plugged into the Speccy. I have another one that registers…
... produces -5v and +12v for the ram, and +12v for the Colour ... run a speccy off a 12v car adapter (The car wasnt ...PSU unit spectrum 128k +2b 6 pinout DINHello everybody! I have spectrum 128k +2B but I don't have the 6 pin PSU and I can't find it anywhere. Can you anyone tell me where can I buy this PS…
... adapters don't have the -12v, it's not absolutely necessary ... . I think the -12v is only needed for rs232 ...PSU unit spectrum 128k +2b 6 pinout DINHello everybody! I have spectrum 128k +2B but I don't have the 6 pin PSU and I can't find it anywhere. Can you anyone tell me where can I buy this PS…
... use different voltages (5V and 12V). How can I use a ...PSU unit spectrum 128k +2b 6 pinout DINHello everybody! I have spectrum 128k +2B but I don't have the 6 pin PSU and I can't find it anywhere. Can you anyone tell me where can I buy this PS…
Can I take the cables of a 24 pin connector from a PC PSU like this [url]http://pinouts.ru/Power/atxpower_pinout.shtml[/url] and connect the +12V,+12V,-12V,5V,GND cables to the 6 pin connector? thanksPSU unit spectrum 128k +2b 6 pinout DINHello everybody! I have spectrum 128k +2B but I don't have the 6 pin PSU and I can't find it anywhere. Can you anyone tell me where can I buy this PS…
... .shtml[/url] and connect the +12V,+12V,-12V,5V,GND cables to the ...PSU unit spectrum 128k +2b 6 pinout DINHello everybody! I have spectrum 128k +2B but I don't have the 6 pin PSU and I can't find it anywhere. Can you anyone tell me where can I buy this PS…
But the +12V of the PC PSU works @12A +5VDC @25A . Wont the intensity of corrent blow with the spectrum?
Spectrum actually works with +12V @ 0.7A and +5V@ 2A, it's very lower.PSU unit spectrum 128k +2b 6 pinout DINHello everybody! I have spectrum 128k +2B but I don't have the 6 pin PSU and I can't find it anywhere. Can you anyone tell me where can I buy this PS…
[QUOTE=groove;426515]But the +12V of the PC PSU works @ ... ?
Spectrum actually works with +12V @ 0.7A and +5V@ 2A ...Spectrum 128+ (No TV picture)I got a Spectrum 128+ which is not generating any picture. I checked the TEA2000, and it gets not 12 Volt, but only 1.4, so this is the problem, I gu…
... and 9V are all okay, -12V is in reality +11.4 ... /> A repaired one +128K without +12V and I had to change ...BEEP pitch values for key of G?I've been transcribing a listing which is supposed to include a DATA statement with the pitch values for the key of G. What it's got is: DATA 5,7,9,…
... of fifths like a vertical coil with C at the bottom ... on either side of the coil. But thats just because I ...Someone can help me to fix my Zx Spectrum?I did a video about the startup: [url]http://dl.dropbox.com/u/1566495/ZXSPECTRUM03.mp4[/url] I have replaced the ULA with a working one (same proble…
... -5V, Pin 8 should be +12V, Pin 9 should be +5V ... . If -5V or -12V are absent or much lower ...Someone can help me to fix my Zx Spectrum?I did a video about the startup: [url]http://dl.dropbox.com/u/1566495/ZXSPECTRUM03.mp4[/url] I have replaced the ULA with a working one (same proble…
[QUOTE=gibs;431121]... 4/ how to check TR4/TR5 ?[/QUOTE]
When -5V and +12V (at 4116) are present then both transistors work OK. So you checked already.Crappy video in +2B/+3Maybe it's not a failure in my ZX Spectrum, but I need some advice... I've got some spectrums (a ZX Spectrum +, two spanish ZX Spectrum +2B and a mo…
... 5V en lugar de a 12V
- A?ade un condensador ... colector to 5V instead of 12V
- Add a capacitor of ...Crappy video in +2B/+3Maybe it's not a failure in my ZX Spectrum, but I need some advice... I've got some spectrums (a ZX Spectrum +, two spanish ZX Spectrum +2B and a mo…
... 5V en lugar de a 12V
- A?ade un condensador ... colector to 5V instead of 12V
- Add a capacitor of ... other mod is connected to +12v. Would help connecting to TEA2000 ...Midi out on a ZX SpectrumYears ago (may be over 15 years...) I soldered a small adapter that lets a keyboard or synthesizer connect to the ZX Spectrum 128K's midi/RS232 port.…
... the circuits that requires 12v, check that the 12v line from the ...Midi out on a ZX SpectrumYears ago (may be over 15 years...) I soldered a small adapter that lets a keyboard or synthesizer connect to the ZX Spectrum 128K's midi/RS232 port.…
... the circuits that requires 12v, check that the 12v line from the ... !
It is not the 12V that is missing but the ... -12V... I am using a small ... power connector also has a -12V line...
So, other ...Midi out on a ZX SpectrumYears ago (may be over 15 years...) I soldered a small adapter that lets a keyboard or synthesizer connect to the ZX Spectrum 128K's midi/RS232 port.…
... it wouldn't have the -12V required for the serial ports ...+3 broken with broken disk drive.Ok, so today at a car boot sale I picked up a Spectrum +3 for ?5. It's in good condition, powers up and works well. However, the disk drive does not…
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…
... , and the supply voltage for +12V indicated above, is definately sufficient ...component out?I would like to connect ZX48K to plasma TV with component cable. I read somewhere that signals are on the expansion edge connector. Do I need somethi…
... Out without the need of +12v.[/QUOTE]Use the S-video ...component out?I would like to connect ZX48K to plasma TV with component cable. I read somewhere that signals are on the expansion edge connector. Do I need somethi…
... use an external PSU for +12v as well as for +5v ...My Spectrum has gone a bit dud since doing some Mods, HELPMy father in law and I did some modifications to my 48K rubber key Spectrum last weekend, and now it seems to be very keen to crash, especially when …
... a little harder to produce +12v for the DRAM and video ...Remove +12 Volt itemsWhich items can be removed on a ZX48K issue 4b PCB if I don't need the +12 Volt? Micky
Speccy needs +12v for LM 1889 which is ... YPbPr converter.
Then, +12v are used by the first ...
