rajashekar
New member
Hi All,
I have a Mercury ATX switching power supply - 450w based on WelTrend WT7520 IC and its not powering on. Upon checking I found that Fuse has blown up and also a Zener diode is gone.. The portion of the board under that zener diode was in burnt condition by doing cold check itself. So, I want to replace that Zener Diode, but I don't know what value diode we should replace with. Please help me. I don't find any circuit diagrams of this particular SMPS anywhere. The Diode reference code on the circuit is "D36" . Please help.
Regards, Raj
I have a Mercury ATX switching power supply - 450w based on WelTrend WT7520 IC and its not powering on. Upon checking I found that Fuse has blown up and also a Zener diode is gone.. The portion of the board under that zener diode was in burnt condition by doing cold check itself. So, I want to replace that Zener Diode, but I don't know what value diode we should replace with. Please help me. I don't find any circuit diagrams of this particular SMPS anywhere. The Diode reference code on the circuit is "D36" . Please help.
Regards, Raj