ATX power supply customer came with the complaint of intermittent no power. During the examination with power, I could see that the fan does not rotate. Not only that, some filter capacitors bulge also because of the heat accumulated inside the power supply. The failure of the fan does not suck the heat of the components produced mainly the switching power supply transformer.
If you remove a working power supply and, touch switch the transformer, you couldfeel it is quite warm. Another source of heat would be cooler, where the output diodes attached to it. Diodes run a bit hotter than filter circuit diodes in other lines due to the high current present at the secondary main line.
As the disturbance fan, you could actually use a Philips oil based contact cleaner on the fan service. The grease in the fan would dry up after turning it occasionally, and finally to. Remove the back plastic cap of the fanand spray it with contact cleaner and you'd be surprised, the fans could actually back his glory. It will actually work just like a new fan, if it still does not rotate, is the best choice to replace with a new fan. If you could be the power supply, the beds in your workplace then you save the fans and install it.
From the photo on my website you can also see that besides the broken stick glue the components. Manufacturers are well targeted, a kind of glue toApply to the individual components, if they believe that these components must be shaken or out, or when vibration during transport. After the device to work for a long time and the heat is generated within the device, the adhesive left on officers and sometimes even corrode the pins of the components and eventually lead to the device no longer works.
Scrap it with your pencil and test solution use thinner to clean the circuit board. After replacing the capacitors removedthe decayed glue and service the fan, the ATX power supply to serve faithfully a new life to the computer.
Some ATX power supply would be a long time, because the "fix too many components on the board. Most frustrating is that you could get the parts especially the power ic. Even if you could, would the price is too high in the sky, and when this happened, I'm usually the customers get to buy a new unit as of today the price of a neware relatively cheap.
0 ความคิดเห็น:
แสดงความคิดเห็น