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Re: power supply board broken
To know more about this, you have to download the repair manual to this set. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. http://electronicshelponline.blogspot.com/ Pull up older posts there.
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the PSU has Problem . It is not supplying enough voltage to boot the PC, capacitors inside the PSU are weak or damaged. Its dangerus to open the PSU coz, Capacitors have high voltage currents. If you have the Knowledge of electronics, then open the PSU and detect the Weak or Leeky Capacitors and replace them with new one( this method is for experiment and thrill) . But the replacement new PSU is better , perfect and cheaper then repairing the psu from outside. best of luck
The blinking light is telling you something about the PSU. First check any AC mains voltage select switches for proper setting. US should be 115. Second if you have a multimeter, you could test the PSU for voltage. Disconnect all power to all components. remove all components from the board including cpu, memory . Leave the PSU only plugged into the board. Press power. If the fan turns on then it's not the power supply. The brand power supply isn't the best, I've seen where you need to wait for 5-20 minutes for the blinking to stop, at which time it will fire up. Now, if it doesn't power up, then it's most likely the PSU.
Is this a power supply in a desktop computer?
If so, any make ATX switch mode power supply will fit in the desktop case (the mounting holes are standard), just make sure the total output wattage is equal to or greater than the original unit. I suggest you remove the power supply and take it with you to your friendly computer shop when you purchase a switch mode power supply.
There should be 12v coming from the yellow wire and 5v from red. Open
PC and use a multimeter to check the voltage output connect negative
probe to the power supply casing and the positive to the red and yellow
wires from the molex connectors. If the readings are below the
mentioned voltages then the PSU is faulty. Note if readings can be
round off to the given values then the output is fine. cheers.