How to Fix Merlin Legend 511A Power Supply 391A2 Switching On and Off
byI came to work and found our Merlin Legend 511A power supply 391A2 switching on and off. The handsets were making a repetitive clicking…
power supply
How to Fix Dell Optiplex 755 Making a Grinding Noise
byI came in to work and found my work PC making a strange noise the other morning. It didn’t sound like a hard drive going…
How to Power a Scavenged Fan with a Used Wall Plug
byI take apart a lot of broken electronics because I like to learn how things work and one thing that I usually keep from…
How to Troubleshoot Dell Optiplex GX520 Power Supply Issues
byWe own over 40 Dell PCs and have run into many power supply issues. Here’s what I do to troubleshoot and track down the…
How to Replace the Power Supply in a Dell Optiplex GX520
byWe’ve had the fan on the power supply of these computers go out four times now (out of the 24 GX520’s we own). Here…
How to Run an ATX Computer Power Supply Without a Motherboard as a Stand-Alone Bench Power Supply
byIf you have an old computer laying around there are parts inside it that can be very useful to you–one particular one, the power…
Computer Randomly Shuts Off Power Supply Issues on a Dell Optiplex GX520 (Small Form Factor)
byOne of the computers in our lab would randomly shut down (note: it wasn’t rebooting, just shutting off). I tested the RAM using multiple…