Electrical Bees
I may not be going to bed as soon as I had hoped. As a late night project I decided to look into fixing a computer that's sitting around the house. The fuse was blown on the power supply so I planned to re-fuse it and see if it still works. I guess a blown fuse is generally a sign of much worse. It doesn't always mean that a power surge arrived at your house. In this case, a short in the unit was more to blame. If the fuse is blown, I'd recommend getting a new power supply. If it happened during an electrical storm, have your UPS company pay for it.
I had already tested the system with an alternative power supply and the system worked fine. However, after re-fusing and plugging in the supply, the plan did not go as expected.
First, nothing happened so I assumed my fusing rig did not contact properly. That was correct. I had to rub off a layer of resin that was on the fuse so that the fuse case would complete the circuit. Cleaned it all up and re-connected everything and turned it on again. Nothing still. I was thinking what could possible my preventing this thing from turning on. There was only one other thing I could do. I could switch the fan speed with a switch on the back of the power supply.
Click. All se---BIZZZ--POW! Sparks flew two inches out of the supply and a small cloud of smoke followed. Nope, this power supply is dead. My guess is that the fan is what killed it. And I just made certain of that with such a horrible frightening explosion after adjusting the fan speed.
My advise to all of you is to stay away from power supplies with a fan speed switch. A fan speed knob is much more reliable than a clunky switch and also takes less circuity to produce. Also would not recommend Coolmax brand for that reason. Thus ends the life of this Coolmax CX-500B power supply. May its soul find the matrix.
I had already tested the system with an alternative power supply and the system worked fine. However, after re-fusing and plugging in the supply, the plan did not go as expected.
First, nothing happened so I assumed my fusing rig did not contact properly. That was correct. I had to rub off a layer of resin that was on the fuse so that the fuse case would complete the circuit. Cleaned it all up and re-connected everything and turned it on again. Nothing still. I was thinking what could possible my preventing this thing from turning on. There was only one other thing I could do. I could switch the fan speed with a switch on the back of the power supply.
Click. All se---BIZZZ--POW! Sparks flew two inches out of the supply and a small cloud of smoke followed. Nope, this power supply is dead. My guess is that the fan is what killed it. And I just made certain of that with such a horrible frightening explosion after adjusting the fan speed.
My advise to all of you is to stay away from power supplies with a fan speed switch. A fan speed knob is much more reliable than a clunky switch and also takes less circuity to produce. Also would not recommend Coolmax brand for that reason. Thus ends the life of this Coolmax CX-500B power supply. May its soul find the matrix.