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zx spectrum +3hello fellaes from europe, greece, last week finally i found a zx spectrum 3, with a damaged drive, a power supply that works fine, and a black wire …
Micro Command - voice recognition for the ZX SpectrumIt's an interface you might know about. This is it: [img]http://www.zxprojects.com/images/stories/microcommand/microcommand.jpg[/img] I've found som…
... .zxprojects.com/images/stories/microcommand/ic2.bin]EPROM contents[/url] labeled ... IC2 in the interface. I've ...Finally got round to itFinally got round to giving my old speccy a close look. Details 1982 Issue 2 Seriel No 001 196193 Hmm... Followed the initial tests on You tube w…
... rail---850 ohm
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IC2 as the usual patch however ...zx spectrum +3hello fellaes from europe, greece, last week finally i found a zx spectrum 3, with a damaged drive, a power supply that works fine, and a black wire …
Issue 1 80K SpectrumHere's the other Spectrum I acquired last weekend. It's an [URL="http://www.drumfu.com/Issue1.jpg"]Issue 1[/URL] with an [URL="http://www.worldofspec…
... .drumfu.com/SinclairZX80-003.jpg"]IC2[/URL], and [URL="http://www ...Problem with Discovery OpusI've just got a Discovery Opus, but it seems to be faulty. When I connect the Speccy and switch it on, it displays the "C 1982 Sinclair Research", …
... there is a socket named IC2 (next to the ROM) that ...Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …
... +12V to pin 30 on IC2 and
diode (IN 4148 ... ) from pin 30 of IC2 to pin 33 of IC1 ... as follows:
Base to IC2, pin 30.
Emitter to ... , pin 33.
Collector to IC2, pin 11.
6C001 ...Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …
... +12V to pin 30 on IC2 and
diode (IN 4148 ... ) from pin 30 of IC2 to pin 33 of IC1 ... as follows:
Base to IC2, pin 30.
Emitter to ... , pin 33.
Collector to IC2, pin 11.
6C001 ...Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …
... ) I do a second check. IC2 is the Z80, and pin ...Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …
... the large pcb track between ic2 pin 11 and ic 23 ...48k to 128k upgrade - problemsHi friends! I built 128k upgrade according to the [url]http://hw.speccy.cz/128krebuild.html[/url]. After I powered on my Speccy it said hello with s…
... and connect pin 12 of IC2(74LS174) with adress line A14 ...Calling all owners of Black +2s...Another annoying hardware survey for you... If you have a Black +2 with a motherboard marked: [B]Z70833 ISSUE 1 [/B] [LIST] [*]does your board have…
... /> Underside, showing the cap between IC2 and IC14, the green wire ...ZX Spectrum 128K composite video fixes in 1 documentI just finished my document with video fixes and improvements for all ZX Spectrum 128K models. Download it here: [URL="http://benophetinternet.nl/ho…
... the line from C31 to IC2 as you suggested (to disable ...ZX Spectrum 128K composite video fixes in 1 documentI just finished my document with video fixes and improvements for all ZX Spectrum 128K models. Download it here: [URL="http://benophetinternet.nl/ho…
... the line from C31 to IC2 as you suggested (to disable ...Spectrum +3 FavourCan a kind soul with a multimeter and a +3 measure the resistance on the power socket between the 5V and the ground? I have a dead +3 that only has 0…
... , check C4 for shorts, and IC2. If a voltage higher than ... present at the input of IC2, but 12V is not present ... at its output, replace IC2.
If voltage at ...PlusD mini - production startedI'm developing a PlusD clone, with some features stripped to make it very affordable. The real PlusD and German clone have an 7805 regulator, but I …
... :-
IC1 - WD1772-PH
IC2 - M2764AFI
IC3 - HM6264LP-15 ...The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... , pals, ic5 and half of ic2.
This block is the ... the other half
of ic2 which generates the clk signal ...Barn find #4I think this is some sort of backup device. Its got "007" on the motherboard and the mice have chewed the buttons. Will do a little research later in…
Barn find #4I think this is some sort of backup device. Its got "007" on the motherboard and the mice have chewed the buttons. Will do a little research later in…
... 9,10 and 11 of IC2 are really connected together YES ...Hardware description - MULTIFACE 128I make schematic of MULTIFACE 128 (v36) from PCB layers downloaded from WOS. But all PCB layers on WOS contain some bugs, absent signals, etc.. Now …
... log.1 = enable address decoder IC2(LS30) via input pin 12 ...zx spectrum without TR6 (ZTX313)Hi is it possible that a zx spectrum 48 issue 2 works without TR6 (ZTX313)? Should be very interesting.
... +12V to pin 30 on IC2 and diode IN4148 from pin ... 30 of IC2 to pin 33 of IC1 ... as follows:
Base to IC2, pin 30.
Emitter to ... , pin 33.
Collector to IC2, pin 11[/B][/I]
zx spectrum without TR6 (ZTX313)Hi is it possible that a zx spectrum 48 issue 2 works without TR6 (ZTX313)? Should be very interesting.
... +12V to pin 30 on IC2 and diode IN4148 from pin ... 30 of IC2 to pin 33 of IC1 ... as follows:
Base to IC2, pin 30.
Emitter to ... , pin 33.
Collector to IC2, pin 11[/B][/I]
One more grey +2 with video problemsI guess I need your help again to hopefully be able to do some proper troubleshooting myself one day. Here I have a grey +2, which could be a bottom…
... . It could be IC3 (MC1488 ), IC2 (TEA2000), T1, C22, C23, C41 ... . If not, then it is IC2.
If you find ...Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... then the 7812 linear regulator (IC2) is probably destroyed.
If ...+2 Grey video issueSo far ive replaced TR4, TR5 (and correctly orientated them) and seperated the audio from the video, still I have this; [youtube]mZZWOXRs_Zk[/youtube…
Is the +12V Analog (measured across IC2, TEA2000 pin 11 to ground/0V) okay?
Can't think of anything else at the moment...
[I][B]Mark[/B][/I]+2 Grey video issueSo far ive replaced TR4, TR5 (and correctly orientated them) and seperated the audio from the video, still I have this; [youtube]mZZWOXRs_Zk[/youtube…
I did think about that too B, just disconnecting its power but I havent tried it yet.
Pin 11 IC2 reads 0.97v, im missing 12v from somewhere!+3 Power SuppliesI have about 4 spare +2A power supplies. Can I use these with the +3, or is there any difference?
... uses:-[/B][/U]
+12V ... IC2 (7812) and C2 (1000uF)
+12V ... IC2 (7812), C4 (3300uF), F2 (1 ...Yellow issue 4A keyboard madnessNote sure if this is a similar problem to the one CornishManicMiner has, but one of my yellow issue 4A boards is driving me crazy. I had it in variou…
... IC1 (ULA) pin 33 and IC2 (Z80 CPU) pin 20 (/IORQ ... IC1 (ULA) pin 33 and IC2 (Z80 CPU) pin 11 (+5V ... IC1 (ULA) pin 12 and IC2 (Z80 CPU) pin 16 (/INT ...Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…
... IC1 (ULA) pin 33 and IC2 (Z80 CPU) pin 20 (/IORQ ... IC1 (ULA) pin 33 and IC2 (Z80 CPU) pin 11 (+5V ... IC1 (ULA) pin 12 and IC2 (Z80 CPU) pin 16 (/INT ...
