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Issue 3 board... How to resurrect?Dear Everyone, Now I have a working 48k Issue 3, a sort of working Speccy+ (still having problems with the keyboard, more of that in another post) a…
... a typical fault in the lower RAM isn't the cause of ... common for a faulty upper RAM IC to interfere on the ... 16K model. Sometimes a failed RAM IC develops a short between ... set of measurements. Remove any RAM IC that gives an usually ... -
Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…
... put sockets down for the RAM and perhaps the CPU.
lower) RAM fault. There was another post ... -speaker buzzing was probably the RAM.
@Zorn: Thanks for ... -
Which ULA?Just a quick question, more of interest rather than immediate need... I am thinking ahead about the repair of an Issue 2 board, and also an Issue 6A …
... be fine to all the lower RAM, and the copyright screen looks ... -
Which ULA?Just a quick question, more of interest rather than immediate need... I am thinking ahead about the repair of an Issue 2 board, and also an Issue 6A …
... the next step be? Z80? lower RAM?
All suggestions would ... -
Which ULA?Just a quick question, more of interest rather than immediate need... I am thinking ahead about the repair of an Issue 2 board, and also an Issue 6A …
... Membrane and z80 with confidence, lower RAM with less. I suspect I ... stack of Zorn's replacement Lower RAM boards in the near future ... anywhere. However, none of the lower RAM chips are heating up any ... -
What's on your saucer?Thanks go out to frobush and zx1 for inspiring* this WoSser to create a yet another excellent WoS thread. Lunch 10 minutes ago. [IMG]http://i300.ph…
Why are the pepperonis fleeing the middle, what's there we're not seeing??? :-o -
I am currently playing......Don't know if there's been a thread like this, but I can't find one.... Having seen all the different threads asking people if they've played such a…
... mode only covers multiplayer and not Spartan Ops or campaign. ... now you know what [I]not[/I] to do :p
not we did bloody well!![/QUOTE ... in total and I'm not seeing anything on the map....
seeing as I won't get ... -
lower ram "new" replacement board.[url]http://www.ebay.co.uk/itm/230994088030[/url] I'm sure others have seen it .. but is it "like for like" compared to the original. .with regard …
... an SRAM replacement for the lower RAM. It couldn't even interfere ... detect data corruption as the lower RAM is refreshed by the ULA ... -
Youtube no more...Youtube has updated something. And is now demanding I upgrade my browser to a HTML5 version. And I need to install a new Adobe Flash player. Blood…
... and is troublesome on anything not Microsoft - when had they used ... slagged off smartphone environments for not running Silverlight chuntering on about ... store to make money while not seeing the irony of using a ... -
16K/48K Lower RAM (4116) replacement.You may want to read [URL="http://www.worldofspectrum.org/forums/showthread.php?t=37957"]this thread[/URL] for background information on the quest t…
... =mcleod_ideafix;709022]Although non-contended RAM (4532 chips) seem to be ... Spectrums that have upper RAM faults than lower RAM faults. Perhaps because they ... -
Issue 2 black paper white borderGot an issue 2 here that has a 6c001e ULA, no cockroach, no transistor mod (although you can clearly see on the top of the z80 and on some legs, some…
Thanks guys, the connections for the lower ram have been checked and double checked professionally, alls good down there, ive even put 8 known working 4116 ic's in to the same effect -
Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…
... . I am assuming that the lower RAM replacement module is OK.
RAM and ROM removed you get ... pure white. With only the RAM removed you get a black ... -
Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…
... read display data from the lower RAM. I encountered many variations of ... it while developing the lower RAM replacement module. Are you using ... -
Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…
... read display data from the lower RAM. I encountered many variations of ... it while developing the lower RAM replacement module. Are you using ... -
New game: The curse of OddvilleDon't get too excited! :p Just wanted to share this because the coding of it is driving me mad, or rather the game designer is. The curse of Oddvil…
... innkeeper and some tables so not seeing it as such is very ... -
Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…
I'm wondering if it's one of the lower RAM ceramic caps (C1 to C8 ) at fault? That vertical line didn't look to be present when the replacement lower RAM module was in place...
Replacements are 47nf, 25V I believe.
B -
Strider II (and others) + 3 disk versionsHello everyone, I've been working on converting some games to be able to load them from the +3 floppy. I started with single load games but now Im i…
... put the stack on the lower ram?[/QUOTE]
Look at ... -
Issue 4A repair attemptI think I need some help. I have a nice Issue 4A main board here, which does not give out any video signal. I checked some voltages (the ones that se…
... . Is 12V present at the lower RAM and IC14? A missing 12V ... and will probably damage the lower RAM.
It's likely ... -
ZX Spectrum 48K working as 16K from factoryGood morning I Have a Zx Spectrum 48k working as 16K , it came like this from factory. What can i do to solve this , and put it to work as 48K? Wha…
Upper RAM, 4164 chips, get em from ... , but if you search "4164 RAM", you'll get several listings ... /> Just an edit:
Lower RAM are 4116 chips, same source ... -
Issue 4A repair attemptI think I need some help. I have a nice Issue 4A main board here, which does not give out any video signal. I checked some voltages (the ones that se…
... and some show 12V. The lower RAM shows 12V and 5V on ... -
ZX Spectrum 48K working as 16K from factoryGood morning I Have a Zx Spectrum 48k working as 16K , it came like this from factory. What can i do to solve this , and put it to work as 48K? Wha…
[QUOTE=camaisin;712351]In case of putting a upper ram module, do you send to Portugal?[/QUOTE]
Yes. Prices will probably be the same or very similar to those for the lower RAM module. -
Issue 4A repair attemptI think I need some help. I have a nice Issue 4A main board here, which does not give out any video signal. I checked some voltages (the ones that se…
... regulator, the coil, the entire lower RAM and TR4/TR5 all show ... -
Issue 4A issuesHi all, I've been trying to get the Issue 4A board that came DOA with the case I purchased for my Frankenspectrum to work. I've recapped and socket…
... similar interference following replacement of lower RAM with modified 4164's, and ... -
Repairing a torn trace on an Issue 2 PCBI've found what I think could be the reason for my Issue 2 board not working properly... There is a torn PCB trace beneath one end of where a new ULA…
... be anything wrong with the lower RAM (i.e. none of the ... -
Repairing a torn trace on an Issue 2 PCBI've found what I think could be the reason for my Issue 2 board not working properly... There is a torn PCB trace beneath one end of where a new ULA…
... sound, first suspect is a) lower RAM and b) PSU centred on ... TR4 ZTX650.
Faulty RAM chips rarely get hot - they ... -
Repairing a torn trace on an Issue 2 PCBI've found what I think could be the reason for my Issue 2 board not working properly... There is a torn PCB trace beneath one end of where a new ULA…
Assuming you've got lower RAM in at this point, I' ... -
Repairing a torn trace on an Issue 2 PCBI've found what I think could be the reason for my Issue 2 board not working properly... There is a torn PCB trace beneath one end of where a new ULA…
... /> Fair enough, no mention of lower RAM socketing was made, which should ...
