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+2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals. I am trying to work out what really exists…
... boards I noticed that the ISSUE 4 board is (c) 1990 ... , two years after ISSUE 1 and 2.
Then ... to change the circuit, the ISSUE 4 board has some completely ... . The "+2B/+3B circuit" that fixed the sound issue and is used ... -
+2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals. I am trying to work out what really exists…
... FM modulator on the +2B ISSUE 4?
can you ... called plus3 for spectrum +2B/+3B
if you want ... photo of bruno's spectrum ISSUE 4 1990
[url ... -
Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... totally disagree on the cache issue - the x86 survives on its ... the '50 DVD spindle' sized heatsink and fan with plenty of ... -
128+ and Divide+ not working togetheri think theres something wrong with my 128 (toastrack), divide+ just wont work on it, corrupted screen on bootup and with big thick black bars rollin…
... /> Also worked on one 128K heatsink machine but refused to work ... timing (probably) issue with the Z80 the 128 heatsink had.
Tried ... -
Challenging Common Knowlege: The +2A/B[I]I was going to write a big long essay about my research on this subject, but being an incredibly lazy person I never really got anywhere with that…
... then came across the +2B/+3B Amendment Service Manual which details ... 4 revisions. The final revision, ISSUE 4, does not contain the ... -
48k SoundHi All Been here before but still not happy with my 48k sound/beep volume. I seem to recall with my original 48k Spectrum all those years ago that…
... tell some differences by the heatsink (if you can see ... you don't have an issue 1 Spectrum (quite rare), ... have either an issue 2, or a later issue.
... aluminium above, you have an issue 3 or later, and ... piece, you have an issue 2 (or issue 1), and no ... -
Spectrum +3' AY sound issuesHi everyone - first time poster. I just got a Spectrum +3 for Xmas, and I am over the moon at this - I used to write games which I have here on 3" d…
... ]could[/I] be the elusive +3B
Any chance of ... you the pics of my issue 1 motherboard, with the "extra ... -
Spectrum +3' AY sound issuesHi everyone - first time poster. I just got a Spectrum +3 for Xmas, and I am over the moon at this - I used to write games which I have here on 3" d…
This page says +3B has existed:
[url] ... like that.
There was issue 1 - around 6000 were produced ... and next issue 2. +2B is marked ... so I do not believe +3b was produced earlier.
... BTW. What was changed from issue 1 to issue 2 ? -
Spectrum +3' AY sound issuesHi everyone - first time poster. I just got a Spectrum +3 for Xmas, and I am over the moon at this - I used to write games which I have here on 3" d…
... ;502459]This page says +3B has existed:
[url] ... that.
There was issue 1 - around 6000 were ... I do not believe +3b was produced earlier.
... What was changed from issue 1 to issue 2 ?[/QUOTE]
...
Well my issue one has some bits and ... -
Spectrum +3' AY sound issuesHi everyone - first time poster. I just got a Spectrum +3 for Xmas, and I am over the moon at this - I used to write games which I have here on 3" d…
It seems that +2b was also issue 70833, so +3b 70835 does not make sense in 1988.
No proof that +3b went to production or... it is very rare.
Maybe in some Police Packs. -
new pc, not postingnever had this before.. but the bleep codes are saying there is an issue with the graphics card. it's a gigabyte GA-P67A-UD3 and the gfx card is a …
... 2 might have been the issue and the board hasn't ... get scrap metal for that heatsink :lol:)
or maybe ... -
ZX Spectrum 48K, issue - works fine till it gets hot (?)ZX Spectrum 48K, issue 2, works just fine, tested with Winston's diag board. At a certain moment in time however, it seems to run hot and stalls. Whe…
... last spectrum repair was an issue 2. When it warm up ... capacitors that were under 7805 heatsink !!.
Bye
ZX Spectrum 48K, issue - works fine till it gets hot (?)ZX Spectrum 48K, issue 2, works just fine, tested with Winston's diag board. At a certain moment in time however, it seems to run hot and stalls. Whe…
... solve the problem, as the issue 2 seems to use an ... use my finger as a heatsink, way too hot, but not ...ZX Spectrum 48K, issue - works fine till it gets hot (?)ZX Spectrum 48K, issue 2, works just fine, tested with Winston's diag board. At a certain moment in time however, it seems to run hot and stalls. Whe…
... use my finger as a heatsink, way too hot, but not ... 7805.[QUOTE]
The issue 2 that I repaired also ... /> P.D I test the issue 2 with a modern +9v ...48k keyboard dead problemHi This is my first post and probably a problem thats been on here loads. Just been given a 48k, get the copyright screen but can't advance. I di…
... inspection it seems that the heatsink inside was contacting with the ... had a similar issue where I had the heatsink touching the ULA ...my rather spiffing +2Thanks to Macc I have an immculate +2, only problem is I daren't use it!! [IMG]http://a7.sphotos.ak.fbcdn.net/hphotos-ak-snc6/190658_206803459336782…
... if you ever get a +3b then that definitely needs to ... especially about the conteneded memory issue. What would be nice is ...Made in KoreaJust a couple of questions. Were there many 48k Speccys made in Korea and when were they made?
48K rubber from Samsung is issue 2. Not sure if issue 3/3b were still made in Korea.
BTW. As I remember Apina in Poland was assembling ZX 48K+ using 4s boards.Made in KoreaJust a couple of questions. Were there many 48k Speccys made in Korea and when were they made?
... from Samsung is issue 2. Not sure if issue 3/3b were still ... />
My 48k as a issue 3 in it. Doesn't ...New speccy modelThe 48k toastrack ;) [img]http://alistairtesting.no-ip.org/48k-toastrack.jpg[/img]
... that is that on the issue 5 and above you lose ... 've just put the "original" heatsink back in. It's not ...New speccy modelThe 48k toastrack ;) [img]http://alistairtesting.no-ip.org/48k-toastrack.jpg[/img]
... happy, specially issue two ones that have an inadequate small heatsink.
New speccy modelThe 48k toastrack ;) [img]http://alistairtesting.no-ip.org/48k-toastrack.jpg[/img]
... happy, specially issue two ones that have an inadequate small heatsink.
Issue two Speccies have really a small Heatsink...New speccy modelThe 48k toastrack ;) [img]http://alistairtesting.no-ip.org/48k-toastrack.jpg[/img]
... spectrums.
Issue two Speccies have really a small Heatsink...[/QUOTE]
Anybody seen this on ebay?[URL="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=320710863449&ssPageName=STRK:MEWAX:IT#ht_17027wt_1139"]Link[/URL]
As you say, disturbing. The Modulators are showing signs of rust!
As for the wherabouts of the ULAs....? They can be the most valuable bit.
Mostly issues 3B, 4B and a 3rd issue which I can't see.128K blues, part +2: picture and tape driveI recently purchased an original (grey) +2 which sadly seems not to be fully working. The computer powers up but there is no way to obtain a stable p…
... or audio suffered from an issue about mixing audio and video ... the 7805 regulator with attached heatsink to lowerage the weight.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…
... mod on my Speccy 48k+ issue 4B which I recived with ... DC-DC step down converter, heatsink removed (but added small one ...Spectrum 8bit IDE adaptersHello there my fellow WoS'ers Today I am pleased to (finally) release these little adapters into the wilde [URL="http://postimage.org/image/1aceto6…
... /> [INDENT]There is a height issue with the adapter in the ... to modify the 7805 aluminium heatsink, this can move vertically front ...spectrum +2 tape recorder is dead helpMy +2 grey's tape recorder is not even coming on when i press play so i was wondering with the 5 cables going into a plug and then connecting on to a…
[QUOTE=Zup;576847]About +3B... original +3 have a sound ... , they consider these +3 "the +3B", on other sites they consider ... original ones as "+3B".[/QUOTE]
The Issue 2 doesn't ...Dead 128K heatsinkUnfortunately my 128K heatsink died suddenly and with no apparent reason. I had the Kempston Pro interface connected and when i powered it on the ztx…
[QUOTE=kpuchatek;577239]Interesting issue. I wonder how you deal ... different case than the 128K heatsink. In a regular spectrrum the ...Unboxing my old SpeccysToday I dug out my old collection of computers from the bygone age. My ZX81 fired up fine, but it looks like the keyboard membrane is goosed, as on…
... .5Mhz
On 128K heatsink and +2 grey (and maybe ... European standard. (L4 on the heatsink but I dont know about ... ). It is not an LCD issue. LCDs have problems with the ... />
Here's the 128K heatsink. Adjustable coil in red circle ...+3 No power LED, disc motor continually spinning..and no display. I searched the posts and i found a really old thread going back to 2004 where fuses in the psu were discussed, checked em in this an…
... choice of ground, big black heatsink? Or should I ground from ... dangerous voltages on it. The issue with testing on the DIN ... probes.
IIRC the heatsink is anodized so you won ...
