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Best replacement for ZTX650?What is the best replacement transistor for the obsolete ZTX650? I've read that TIP31 will do the trick. Is there a decent equivalent from the BC or …
... I think.
Right, Issue 4 boards were a hotch ... same.
Yes my board has the "spider componets" thing ... worked fine, after poking the board around to clean it, the ... /> I thought about bringing the board to the original state (remove ... -
Blowtorch method of Speccy repairsI just did my first Spectrum repair (and successful at that). It was the Issue 2 spectrum I wrote about a while ago, I just hadn't got around to doin…
... have a sample of one (Issue 2) and none of the ... lifted the chip off the board. -
Low speaker volume on a repaired issue two speccyI repaired an issue two speccy which was totally wrecked and missing many parts. I installed the missing parts (resistors, transistors) and replaced …
... according to the modification for issue two pcb (for better cirquit ... that i removed from an issue 3b board that i have for ... , the speakers used on later board issues were slightly more powerful ... the circuit diagram of an issue 3+. My normal disclaimer applies ... -
Issue two picture qualityDoes anyone know if issue two and earlier spectrums have worse picture quality (in general, beside colours) compared to issue 3 and later? I mean on…
... ]Does anyone know if issue two and earlier spectrums ... , beside colours) compared to issue 3 and later?
... br /> I mean on both issue two speccys that i have ... normal for this early issue. Also i want to ... ULA chip from a higher issue board - the ULA's do ... -
Spectrum issue 4S ??? What is that?I recieved a spectrum 48k today that i bought from Ebay (rubber). I opened it up and to my surprise it was an Issue 4S, yes 4S!!! I didn't know there…
... my surprise it was an Issue 4S, yes 4S!!!
... thing!!!
Also the board was very high quality, ... componets are soldered on the board in a very "professional ... anyone know how can an issue 4S exist?[/QUOTE]
... Samsung. It's an Issue 4 with the pads ... -
Differences between 16K and 48K modelsI know this is probably an extremely dumb question, but what, besides the extra 32K memory, is the difference between and original 16K rubber-key Spe…
The earliest Spectrums with the issue 1 board actually needed another small circuit ... board to carry the extra memory. ... connector. From the issue 2 though, the board was designed with enough ... -
Did I killed my Speccy ???Hi guys, 1 minute ago I was working on my 128 +2A... But I made a mistake : I cut the gound on the PSU plug of the computer, and I forgot to resolde…
25 years commemorative t-shirtIn 2007, it's 25 years since the Speccy hit the market. The speccy.org crew wants to celebrate this fact with a commemorative t-shirt. First, we onl…
I'm such a geek. This is my answer to the veil...
[url]http://www.alioth.net/tmp/25YrsOfSpectrum.jpg[/url]
Complete with the Issue 4S board that I'm trying to make work again...My to-buy listWhat I want to buy: -ZX80 - [COLOR="Red"]bought[/COLOR] -ZX81 - [COLOR="Red"]bought[/COLOR] -ZX Spectrum 48K - [COLOR="Red"]bought!!![/COLOR] -ZX…
... case for the +D circuit board you're talking about there ... , so it's not an issue :DAudio input on a +2would it be possible to connect an external tape recorder to the socket at the back,or would something bad happen?
... to the tape deck circuit board itself.
But in ... you have a ground loop issue caused by your tape deck ...Wanted 10 - 4116 Ram ChipsHi Can any one help I am trying to get hold of 10 4116 RAM chips for a 48K Spectrum. Does any one know who might stock them. I can get a minimum of …
... 've just clocked that my Issue 3B rubber keyed Speccy contains ... had a look at the Issue 3B Schematic along with [url ... such a chip from the board? (Special Equipment?)
2) Can ...toasted soeccysHello, ive jsut bought a pair of speccys on ebay (one 16k issue 2 & a prob 48k issue 3) unfortunaly the genius who sold them tried to see if the wor…
... PCB for a Speccy diagnostic board this weekend since the weather ... , I have a broken Issue 4S board that could do with some ...toasted soeccysHello, ive jsut bought a pair of speccys on ebay (one 16k issue 2 & a prob 48k issue 3) unfortunaly the genius who sold them tried to see if the wor…
... PCB for a Speccy diagnostic board this weekend since the weather ... , I have a broken Issue 4S board that could do with some ... kit form.
[U]Test board:[/U]
What about LED ... a specialized part). The test board simply should not.
TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…
... 've replaced everything (on the board)I know that could be ... ]
On the issue 2 board, you could slightly trim the ... would help an awful lot. Issue 3 and above, no such ...Anybody fancy coding this?blah de blah de blah Please ignore, poting error.
... ROM by making an external board that connects to the edge ... 2, so that the on-board ROM never gets selected. Simple ...Whats up wi mi speccy ? M RAMTOP no good 0:3I bought a speccy on ebay tried to load Mission Impossible but about 30 secs into loading it stopped and i got the error message ... M RAMTOP no good…
... get 32600 but its an issue 4a !!!!! guess i'll have ... /> No such thing as an issue 4a 16K machine - unless it ... you want to swop the board for a working one?Whats up wi mi speccy ? M RAMTOP no good 0:3I bought a speccy on ebay tried to load Mission Impossible but about 30 secs into loading it stopped and i got the error message ... M RAMTOP no good…
... you want to swop the board for a working one?[/QUOTE ... don't actually have a issue 4a speccy,so i think ...Introduce yourself[SIZE=3][FONT=Comic Sans MS]This is the thread to stop by & introduce yourself.[/FONT][/SIZE]
... , and also tend to be issue 3+ boards (I like the ... issue 6 best of all, easier ... + upgrade case - add your own board :)Dead +2B, help required...It was bought defective on ebay. It came with two faults: a "dead" power supply (it was the fuse) and a faulty main unit. The power supply is now re…
... +2B, made in taiwan, board Z70833 issue 1. I'm trying to ...Dead +2B, help required...It was bought defective on ebay. It came with two faults: a "dead" power supply (it was the fuse) and a faulty main unit. The power supply is now re…
... +2B, made in taiwan, board Z70833 issue 1. I'm trying to ... Spanish machine? Z70833 (c) 1988 ISSUE 1 AMSTRAD is all over ...Issue 1 32K Memory Upgrade neededHi folks, as the title suggest im looking for the original sinclair memory board to make it 48k from 16k. Any other form will do or even instructions…
... myself, if I had an issue 1 board, it wouldn't find ... guy is talking about an issue 1 32K pack I assume ... Pack".
As for issue two 16K machines, they don ...Issue 1 32K Memory Upgrade neededHi folks, as the title suggest im looking for the original sinclair memory board to make it 48k from 16k. Any other form will do or even instructions…
... where i saw the ram board
[url]http://www ... /> Having just aquired my working issue 1 spectrum this will be ... get a couple of working issue 2's as well.
board that goes inside the computer ...On a 48K issue 6A......how can i isolate the 32K block? I want to test if there is any fault on the 4116's , leaving the 4532's out of the equation. Will removing the …
... doing the same on an issue 4 board lying around waiting to ...Question about serial numbers, and issue marques.Hi, I don`t know if you can help me with this little question, but here goes. The spectrum computers have coloured serial numbers on the bottom of th…
... from the issue 1 spectrum all the way upto board version 6a ...It's fitting...... that in the very month that the 25th anniversary of the Speccy falls on, I'm just finishing up making my first ever Spectrum peripheral. It's a …
... just got to finish the board, and just stuck in a ... it out on the dead Issue 4S board.
The surface ... the LEDs installed on the board, I picked up a tiny ...Spectrum 48K ROMHi Can anybody help I have an Issue 6a Circuit Board which has a faulty ROM Chip. Is it possible to program a ROM Chip with the 48K ROM and fit it as…
... help I have an Issue 6a Circuit Board which has a faulty ... . I notice on the 6a board that between the IC 27 ... article is in the 79th issue, you can download it [URL ... to IC26 (according to an Issue 3 Service manual).[/quote]
Bargain[url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=120105608322&ssPageName=ADME:B:SS:UK:1[/url]
The Korean speccies are issue 4S boards- You can tell ... as well on the 4S board.
All this said ...Faulty M1 linesI'm sure this has been discussed before, but using the forum search for the word 'M1' pulled back no hits, which surprised the hell out of me. Anywa…
... br />
My test board's address decoder uses IORQ ... three Speccys (a rubber key Issue 2, a Spectrum+ of ... unknown issue because I've not taken ... whether it's a timing issue (although the M1 line ... needed for my test board after all, since WR ...Rubber Key Spectrum BoxesAfter buying quite a few boxes i have found that in all there are 7 ndifferent box designs and its possible to know which issue speccy isin the box w…
... -keyed Speccy. It's an issue 4a board (I opened it up ...Faulty M1 linesI'm sure this has been discussed before, but using the forum search for the word 'M1' pulled back no hits, which surprised the hell out of me. Anywa…
... fault.
My test board's address decoder uses IORQ ... three Speccys (a rubber key Issue 2, a Spectrum+ of ... t always work with the board. I used this test ... M1 line on my test board, and connected the enable ... actually needed for my test board after all, since WR ...
