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ZX spectrum 128K + 2 (Grey one :)Hi all, I'm trying to revive a dead ZX 128K +2 (the grey one). The regulator was damaged and seemed to be feeding 7.8Volts onto the pcb. Yikes ! I…
... revive a dead ZX 128K +2 (the grey one).
power area to ensure the -5 ... -
Strange cures for a ZX Spectrum +2I have been looking for a +2 now for more than 2 years since I started collecting and restoring Spectrums again. I won a few on eBay, but was unsucce…
... for a +2 now for more than 2 years since I ... refund and me without a +2. I finally manage to ... only got flashing squares with power on. Diagnostics was made ... After that I took the +2 keyboard apart and reassembly it ... and load a program or 2, but that will be ... -
Hardware description - MULTIFACE 3[B]Hardware description - MULTIFACE 3[/B] This is description of MF3 clone, because I can't find more about original interface. Schematic and PAL ch…
... about original interface.
Schematic and PAL chip equations ... />
[B]After POWER-ON or RESET[/B] is ... rom pages. After reset/power-on is set rom ... full 8bit decoder.
Schematic exported from Eafle SCH file ...
RD00XX=1 A6=2 A7=3 A2=4 A4 ... -
+2 coils: a bit smaller, but compatible with 48K coilsThe coils in the +2 seem to be compatible with those from the 48K. Not that strange of course, as all ZX Spectrum models (except +2A, +2B and +3) sha…
The coils in the +2 seem to be compatible with ... , +2B and +3) share the power circuitry.
The
2's and the 2 on the right from ... an 48K coil in a +2.
Notice that there are ... +2 5V and 12V directly, e.g. from a PC power supply ... -
+2 ProblemsGot off to a bad start with my first Spectrum. The tape deck on the +2 I bought has a jammed button and won't work and when I power up I'm unable to…
... . The tape deck on the +2 I bought has a jammed ... 't work and when I power up I'm unable to ... use it on the new +2 I have lined up which ... -
Opus Discovery OddnessHi everybody, I'm busy trying to repair an Opus Discovery for a customer. It's proving to be quite frustrating. First off, the LM317T regulator fo…
... has been burned with a 2.2 ROM (the old one was ... the power circuitry in the Discovery 1? I found a schematic for ... the control circuitry, but not the power.
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…
... /> Here I have a grey +2, which could be a bottomless ... />
First there was no power LED lit on the Spectrum ... . Touching and wobbling the power connector on the board seemed ... I always have a red power LED. So far, so good ...Faulty grey +2, or not?While I?m still fighting with two to three grey +2 computers, which doesn?t give a video signal, I received another grey +2, which acts very strangel…
... two to three grey +2 computers, which doesn?t ... , I received another grey +2, which acts very strangely. ... and re-inserting the power plug the pattern on ... of ten cases, the +2 powers up correctly, shows ... Spectrum correctly. Once the power plug was pulled and re ...Sinclair Spectrum+2 128K PLUS 31 GamesI have for sale a used, but working Sinclair Spectrum +2 128K, with power pack leads and manual, PLUS 31 Games in their cases. [url]http://www.ebay.c…
I have for sale a used, but working Sinclair Spectrum +2 128K, with power pack leads and manual, PLUS 31 Games in their cases.
[url]http://www.ebay.co.uk/itm/111236558291?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649[/url]My Spectrum +2, Multiface 128 and Plus D....Here's something that's always bothered me and had me wondering if anyone else experienced the same thing - Back in 1990 or so, when I finally manag…
... Drive for my beloved Spectrum +2 (Grey), the unit turned up ... />
My Speccy wouldn't power up properly with the Plus ...Grey Spectrum 128+2 Is mine dead??Having a nice session of 128+2 playing this evening and as I was playing Paperboy I noticed a few graphical glitches that had not occured before, the…
... a nice session of 128+2 playing this evening and as ... on screen, pulled out the power lead...the same when I ... reconnected it. The power light is still on the ...48k + Issue 3B Power SocketHi All, Trying to get a Issue 3b resurrected that had a faulty power socket. The socket has come away from the board and peeled away some of the tra…
... resurrected that had a faulty power socket. The socket has come ... .
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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…
... attempt to fix a issue 2 rubber key 48k I bought ... [/URL]
If you power it on and off sometimes ...Power sockets for 48k'sPretty sure there was a thread about these not long ago but I cant find it. Basically im after the power in socket for 48k's and grey +2's, got two …
Pretty sure there was a thread about these not long ago but I cant find it. Basically im after the power in socket for 48k's and grey +2's, got two here that require one each. Anyone point me in the right direction?Adding On/Off switch to ZX +2Hi all Looking at adding a power switch to my +2. Has anyone done this, is there a guide anywhere? Ta B
Hi all
Looking at adding a power switch to my +2.
Has anyone done this, is there a guide anywhere?
Ta
BSeriously weird Issue 2 issue... (RAM-related)Hi guys; I have been trying to fix up my Issue 2 and have run across a bizarre issue that I haven't seen elsewhere in the forums. Hopefully one of …
... fix up my Issue 2 and have run across ... br />
Spectrum: Issue 2, 48k
Initial problem: ... of tweaking of VR1,2 fixed the colour issue ... .
2. MEMCHK returned 32767, upper ... happens:
On power on, the Spectrum has black ...Great to be back....and with fun to comeHi all, 1982: I bought a new 16k issue 2 in 1982, eventually got microdrives and a dktronics keyboard (version 1). Built a home made eprom programme…
... bought a new 16k issue 2 in 1982, eventually got microdrives ... an Arduino controlled digital bench power supply, and on it I ... fun I'm taking the schematic for the Issue 3 and ...'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... />
[LIST]
[*]The standard power socket (replaced with a square ... else I'm missing?
2. Could I test the ULA ...+3e simple ide interfaceHi guys, I want to make a +3e with my +2a. I'm thinking of making the simple 8bit ide interface (internal) and connecting it to a 40 pin ide to sd r…
... eBay link below) with a 2 gig sd card.
2 things, firstly that my plan ... card reader will draw the power it needs from the 5v ... ://www.worldofspectrum.org/zxplus3e/images/schematic.gif[/IMG]
As ...I sell many things part 2Sorry, the descriptions are in Spanish, please use google translation or ask to me. Ordenador Apple Mac Powerbook G4 en aluminio, procesador Power P…
... Powerbook G4 en aluminio, procesador Power PC G4 1,5Ghz, ... OS X 10.5.8, 2 usb, modem, salida DVI, ... procesador intel core i7 a 2,13Ghz, 4Gb de ram, ... .jpg[/img]
2 modulos de memoria DDR3 de ... de bus para tus interfaces, 2 euros.
[img ...power switch for +2 and + 3It's really annoying these machines don't have a power switch. Not even one on the power brick. Has anyone done a mod or know of anything other than …
It's really annoying these machines don't have a power switch. Not even one on the power brick. Has anyone done a mod or know of anything other than turning it off at the socket?RF Video noise on Grey +2's with Z70700 motherboardHi folks, As we know, some limited numbers of Z70700 Iss 1 boards exist (reported by Ben [URL="http://www.worldofspectrum.org/forums/showthread.php?…
... =44025"]here[/URL]). My grey +2 is one of these, and ... of mine has acquired a +2 with the same Z70700 board ... , does anyone know of a schematic and layout for this board ...I broke my 48k Speccy!!!!Hey guys, I am looking for some advice, I hope you can point me in the right direction. So, I went about replacing all the capacitors on my issue 4…
... limited protection with my bench power supply.
The display ... ]
12v = .98v
+5v = 2.3v
I checked ... /> Why does the 4b 48k schematic only show micro farad specs ...Issue 3 /3b power rail improvements<!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:AllowPNG/> </o:OfficeDocumentSettings> </xml><![endif]--> <p class="MsoNormal">Hi F…
... added components
to the power circuit on these machines, an ... /> The changes must improve to power rails around the pcb and ...+2 Grey versionsThis thread is an attempt to pin down the various hardware revisions of the +2 Grey. If anybody can provide further images from their machines or fur…
... [/i]Fitted with radial capacitors, 2 bodge resistors and a capacitor ... ?id=2442&mode=view"] Schematic[/url]
Mid (1987? ... /wp-content/gallery/zx-spectrum-2/img_2278.jpg[/img] (nightfall ... issue-3sinclair-amstrad-zx-spectrum-2-grigio-issue-3/"]Nightfall ...[Updated] Retro Virtual Machine v1.0.2 Released! with better sound.I released a new versión (1.0.2) of my emulator for Mac Os X. Change log Improved audio engine with a 192kHZ resampling. Improved ‘Snow effect…
... new versión (1.0.2) of my emulator for Mac ... hint when the machine is power off.
You can ...No colors on screen, issue 2.I have a 48k issue 2 with composite mod. When i first pluged it in after i bought it, the screen went yellow and after restart there were no colors a…
I have a 48k issue 2 with composite mod. When i ... no success. Any ideas? The power suply is also replaced.Spectrum 128k +2 (grey) getting started..So, I just received a grey +2 in the mail. I don't know if it's in working condition, but that doesn't really matter. I opened it up and a small r…
... , I just received a grey +2 in the mail. I don ... /uploads/2014/05/zx-spectrum-2-grey-audio-input-mod1.jpg ... on this?
The power brick I used with 48k ...Dead 48k and +2I have a couple of questions. My old 48k had a very wobbly power socket so bought a new one and soldered it on. It will not work at all now? Is ther…
... 48k had a very wobbly power socket so bought a new ... +2 from ssomene a while back. Turned it on and had power ... ) then nothing? Will no longer power on. No red light?
Grey +2 SRAM module - any interest ?In the same vein as Zorn's RAM replacement modules, I designed a board that replaces a bank of 8x4164 RAM IC's as used in the Grey +2 with a modern S…
... as used in the Grey +2 with a modern SRAM device ... I was repairing my own +2, and before I realised I ... .png[/img]
The schematic is [url="http://www.dark ...
