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About idflyfish

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    Chopper Commander

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  1. I received my new power supply and tested it. I was able to get 5.21v DC on pins 1 and 4 but got 2.6v AC on pins 3 and 5. This totally puzzled me until I removed the 1.6a fuse and found that it was blown. I guess I expected a blown fuse to not show any reading because that was what I experienced when the 4a fuse was blown. Anyway, I replaced this fuse and now everything works. Thanks to everyone for their help. I'm going to continue learning about the innards of the C 128.
  2. Yes. I notice mine is very different from any images of 128 PSUs I have seen on the internet. I have ordered a new one which I will promptly inspect before plugging it in.
  3. I replaced the fuse again. I am going to leave the PSU plugged in for a while to see what happens. This is because the last time I replaced the fuse I did plug it into the C128 which caused a load hum through the monitor speakers. However, the fuse blew after I had unplugged it from the C128 and while I was testing it with my MM. Anyway, I get 5.21v DC when testing pins 1 and 4. However, I only get 2.54v AC when testing pins 3 and 5. The troubleshooting continues.
  4. Roger that. It would be helpful if I had a known good PSU. I'll keep working at it.
  5. What about the goop in the top image. Is that normal?
  6. Here are some images of what looks like a problem.
  7. I am in North America. I have virtually no experience with electronics but I do have a digital multimeter and I am more than willing to learn, though it might take me a while.
  8. It blew while not plugged into the 128. Couldn't that be attributed to using a 2a 250v fuse instead of the proper 4a 125v fuse?
  9. It lasted for about 10 minutes and then blew
  10. I went down to a electronics store and the owner told me that a 2a 250v fuse is a suitable replacement for a 4a 125v fuse. I really don't know much about electronics but this didn't sound right so I questioned it. I was then told by the owner that he had "gone to college for this" and that it would be fine. A quick google search proved this is horse crap. Anyway, I ordered a 5 pack of 4a 125v fuses from ebay. I will let everyone know how it goes.
  11. F3 fuse is blown. Getting one on order.
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