Hi,

My first and most recent post here was about a PSU that I'd killed. I'm new to electricity so I tried to check some passives with my meter and couldn't find anything wrong, then set it aside until I learned more. Somehow, I saw Fred Flintstone's DSO for sale at a swap meet; the afternoon was ending and he didn't want to transport the six cubic feet and 65 pounds back to wherever.

For the price, I'm very pleased with its performance and condition, it is usable but not so nice in terms of today's fashion: it has nice analog bandwidth but really slow sampler and...

I don't think I need to introduce this power supply, as it has been featured in this forum before. I'd like to share what happened to mine. I am new to electronics and maybe someone will help me understand how this works.

The PSU was bought new and ran for years with its bad caps. Then, I decided to try overloading it. I added 20-25 amperes of 12 volt load. This ran okay for several months and the PSU began to shutdown under such load.

I looked inside, found the Fuhjyyu that everyone loves (except at the 12v filter, it was a different brand that nobody here likes,...