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Dead Spectrum +Hi all, I've recently dug out my old Spectrum + with the idea of repairing it. When I last looked at it, when I was much younger, I was soldering a …
Well, you can use the modulator case, aluminium heatsink or centre pin of the regulator as a ground (negative) connection.
Best of luck with the repair :)
That PCB bottom GIF is all my own work by the way - glad it helped. -
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…
... there a single point (or PCB track) that could be cut ... -
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…
... connector layout and design a PCB for a Speccy diagnostic board ... . I actually laid out a PCB for that last night :-) -
External Speccy CommunicationHow does a speccy communicate with the outside world ?? Do you have to have the interface 1 for serial communications ( rs232 ) or are there other p…
... if I can improve my PCB making skills enough that it ... -
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…
... connector layout and design a PCB for a Speccy diagnostic board ... . I actually laid out a PCB for that last night :-)[/quote ... -
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…
... consists of only the connectors, PCB and a single quad 2 ... -
External Speccy CommunicationHow does a speccy communicate with the outside world ?? Do you have to have the interface 1 for serial communications ( rs232 ) or are there other p…
... EPE forum there.
PCB skills. What problems are you ... -
ToastrackYay! I now have a toastrack 128K. It even works (the TV modulator's a bit dodgy though). I've wanted one since like 1986.
... , glue it down to the PCB. If you don't, vibration ... -
External Speccy CommunicationHow does a speccy communicate with the outside world ?? Do you have to have the interface 1 for serial communications ( rs232 ) or are there other p…
... the discussions on EPE about PCB making, and I'm in ... so anxious to fabricate the PCB!
I'm still ... -
External Speccy CommunicationHow does a speccy communicate with the outside world ?? Do you have to have the interface 1 for serial communications ( rs232 ) or are there other p…
... the discussions on EPE about PCB making, and I'm in ... so anxious to fabricate the PCB!
I'm still ... -
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…
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You can take the PCB out, you can do all ... -
Hard drive crash - any help?My HD has crashed, the OS is Windows 2000 Server. Right at the start of the boot process it says "Error loading operating system". Running the reco…
... made by myself, Schematic's + PCB layouts/cad project files + patent ... -
Hard drive crash - any help?My HD has crashed, the OS is Windows 2000 Server. Right at the start of the boot process it says "Error loading operating system". Running the reco…
... made by myself, Schematic's + PCB layouts/cad project files + patent ... -
+3 soundhello there, just a quick-fire question today. i'm kinda keen on the idea of using my +3 quite a bit, particularly if i bother to to actually sort …
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Anyone any ideas? My PCB is issue 1. I tested ... -
Datacorder "on strike" on my 128k +2AHi, I have a problem with the built-in datacorder on my +2A : The sound became "noisy" with cracks... Giving the tape recorder a little hit was the…
... on the tape recorder's PCB, except the bigger one... 8 ... -
Datacorder "on strike" on my 128k +2AHi, I have a problem with the built-in datacorder on my +2A : The sound became "noisy" with cracks... Giving the tape recorder a little hit was the…
... chip for the tape deck PCB. It's a quad op ... -
Datacorder "on strike" on my 128k +2AHi, I have a problem with the built-in datacorder on my +2A : The sound became "noisy" with cracks... Giving the tape recorder a little hit was the…
... chip for the tape deck PCB. It's a quad op ... -
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 …
... give here is "watch the PCB tracks lifting". I've noticed ... -
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 …
... some sneaky wiring under the pcb wouldnt solve the lifted tracks ... -
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 …
... that a fault with the PCB itself such as a short ... -
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 …
Yes, and PCB layout files... but I want ... />
The caveat on the PCB layout is that I'm ... -
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 …
... and deposited it on the PCB, and with some snipe nose ... -
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 …
... and deposited it on the PCB, and with some snipe nose ... -
Bargain[url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=120105608322&ssPageName=ADME:B:SS:UK:1[/url]
... layout of the components. This PCB is designed to accept ceramic ... on the base of the PCB on UK machines is on ... -
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 …
... 74LS244 very nicely for a PCB (so I always used LS245s ... -
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…
... enable. (I may update the PCB layout so that M1 can ... -
ZX81 - 64mb queryI know this is a spectrum forum but hopefully someone out there may know the answer to my question. I buy and sell old sinclairs and have sold numer…
i now have a pretty good photograph of the pcb showing the mod, is there anyway i can post the picture in this thread ? -
ZX81 - 64mb queryI know this is a spectrum forum but hopefully someone out there may know the answer to my question. I buy and sell old sinclairs and have sold numer…
Thanks guys - It just looks completely different to any other zx81 pcb ive seen.
So its a standard 1K factory issue zx81 ?