Hi Cap! Saved Your post! Thanks! I'll check later. Yeah, I know just because I worked in a informatic hardware house here, a briefly time and repaired almost 5 PSU without an schematic, was hard and I needed help, just because You need to test the components to fin which is broken. The info. in Internet is poor. There are only You and Your experience. Now I have some PSU's incomplete and broken, and I have the project in the future to reconstruct them....

Hi Momaka!! Thanks a lot! That info really helped Me! It's possible that those PSU have OTP because I found temperature sensors inside. So probably to auto modify the fan speed. Thanks about the rest of the info. It's extremely useful for my purpose. Have a nice day!

Hi Cap! Thanks for reply back! Do You refer to this post??: [url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/general-electronics-technical-discussion/3494603-dell-atx-psu-won%E2%80%99t-start-but-forcing-it-works-fine[/url]. I was searching in Your profile, and suscribed of course . So, if that IC is the cause about the protections I've mentioned before, then I have to dissasembly that PSUs and search for them. You gave me a lot of work! Thanks! . As I can see there aren't many info. about this topic arround the Internet. So if I find any useful I'll...

Hi everyone, hope all of You are having a good day. I have a Question from protections in some of this PSU brands and models: Dell Optiplex series 745 to 380 to 390 to 7040 - HP EliteDesk series - And some new Lenovo minitower series. I don't know how to find info. about their protections [ OVP (Over voltage protection) - OCP (Over Current Portection) - OPP (Over power protection) - SCP (Short Circuit Protection) - short - OTP (Over temperature Protection)], some Internet's friend told me that Delta company buids to this brands, but not lists that information if that the client request that protections...

Hi Peta! I struggled a lot to post a reply, since I was many time far away from forums lol. I'm an Electronic Technician. Honestly I have a poor experience about 16 years back from today. I'm from Argentina. From my experience I have to say that it was difficult to me to work in that profession than today I think. But if I still working of that I think that y love that profession afer all. Now I'm working in the IT area, and I have a lot of questions about Hardware. I espect to help somebody from my humble position. Have a nice day ....