Question about AOpen Power Supply: ATX-300GU (PS4300GU) Power Supply
I have an A Open ATX-300GU power supply. I have had it for about 7/8 years. Recently my computer did not switch on and I found the problematic source to be this PSU. The two 1k resistors around Q4 & Q5 got burned. I used a multimeter and saw that there is 32V on one side of the resistors, when on a working PSU it reads about 11V. What could be the fault? Where can I look to see which component/s need replacement?
Could just be the regulating power transistors are burned out or one of their biosing components, there a few meaty capacitors that may be causing a surge, but the safe thing to do would be to start with a new one, the reason is, modern drives are so sensitive that you could blow their circuitry and then lose the harddisk! All the best - the Yeti
Posted on May 17, 2009
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Posted on Jan 02, 2017
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