Review on 🔌 Li-Sun 240W Switching Power Supply for Dell Optiplex 3040 5040 7040 3650 3656 SFF (Part Number: THRJK 4GTN5 D7GX8 HGRMH 2P1RD H62JR 3RK5T) - Reliable Replacement Power Supply for Optimal Performance by Jon Thompson

Old computer wouldn't start. The LED on the power supply is off. I vacuumed the PSU by blowing out the dust with compressed air. Nothing helped. I looked up the part number on the site and found this. The photos showed that the part was very similar to my broken part. The difference was that this power supply has an input of 115 while the dead power supply could be changed between 110 and 220. I needed 110 so there was no problem. Note: The wiring to the motherboard according to the original installation is troublesome. I was able to secure the cable with zip ties instead of bending the wires to follow the original route. No problems so far Note: the delivery has extended the warranty period and is still working Good luck everyone!