Synths
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No longer blowing fuses, but….
Having swapped out the bridge rectifier for a high power one and used nice high grade thermal paste I was able to power up the PSU and sure enough, it worked, I can measure the voltages and the mains fuse does not blow. Awesome, I’m really chuffed with this. So I assembled everything (about 2 hours) and powered her on.Only to discover another fault… ARGH!!! Sadly, the -12V rail is dead… Now I’m imagining the worst, so I decide to check the -12V fuse and well, it’s blown. Upon checking someone has replaced the 2A anti surge fuse with a a 1.5A standard blow fuse. So I power off, quickly…
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We have a winner!
I finally decided I could no longer avoid removing the PSU from the case to check the capacitors, rectifiers and transformer.Now if you recall I had a problem with the scan of the service manual in that the colours of the wires were not clear. I asked on the facebook group and David Cilia kindly took a photo of the area I was interested in and it’s so nice to see the colours. David also sent me pictures of the full page (left hand side and right hand side), Peter Welik also sent me another picture of the page I needed, wonderful! So please give his web site some love,…
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Welcome
I thought I’d move away from so called “social media” due to the increase in far right extremism, bigotry and general hatred in the world. This is a shame as I’ll miss a lot of the people I follow on twatter, faceprat and so on, but for my own mental health it’s time to move on. So I’m here to talk about random tech things I find interesting, maybe update on some of the more tech points of my synthesiser projects and certainly share posts of the odd repair job I do. I’m also working with a friend, Jon, on building a CPU entirely out of TTL logic chips which…