Green lead has to be grounded to keep PSU turned on and that can be done through a switch, which is what I did right after cutting out a hole in a case for it. There is a special signal cable (usually green lead) for this task. I also needed a power on/off switch just for convenience. I’ve removed all unnecessary cabling and secured the remaining cables inside. PSU after unscrewing the top cover looks like this. Standard procedure was involved (I don’t have all photos though) which is cleaning, applying solder, and removing solder surplus with a soldering wick then reapplying a thinner layer of solder.Ĭuriosity time: I was surprised when I saw an SMD chip mounted in a wicked but cool way. Without it cleaned I wouldn’t be able to test my setup since the only hardware to load stuff on a speccy that I have is Divide2k14 by Lotharek. Soooo to work! Sorting out an expansion portįirst, I had to disassemble this unit to sort out an expansion port. The power socket in this speccy is a simple DIN-6 and I already had these plugs ordered for a different project (external SD2IEC). PC PSUs have a lot of various voltage lines and -12 V is there as well, along with +12V/+5V. I was like hmmm … hmmmmmmm … and all of sudden I came up with an idea to use a cased PSU from a small PC that I disassembled a while back.Īt least it sounds brilliant but was a bit harder to achieve … kk is not that hard after all 😉

That’s the one with the Amstrad mainboard.Īfter a short research, I already knew that in addition to +5 V and +12 V, black +2 requires a -12 V line for normal operation. … So, I’ve decided to take my work back underground … to stop it from falling into the wrong hands … Background storyĪ friend of mine, V-12/Tropyx, asked me to hack a PSU for his ZX Spectrum +2 – Black. … but DAMN, there’s no nuclear power plant nearby. … or how to power retro hardware with a modern PSU

Speccy power supply 12v