Having problems with your Dell OptiPlex GX620 PC Desktop ?

I have a dell optiplex gx620 that won't turn on?!

\015 My optiplex was used when I purchased it, it's got a pentium D 2.33 ghz. The power supply is working perfectly, I just put a new one in..... previously the auxilery power light had gone fritzy and began blinking amber constantly. The USB ports are undamaged and clean, the computer was working perfectly for over a year. Hard drive is booting fine in a seperate machine. No cords disconected or malfunctioning as far as I can tell, but when I push the power button, nothing happens. I'm wondering if it's the CMOS battery but it doesn't seem to make sense to me.... Though it's possible. Is it possible the power button BROKE? The only light on the machine with a working power supply previously tested, and retested on a seperate machine, is the auxilery power light on the motherboard. It's steady amber. I unplugged all RAM and reinstalled each seperately, trying all 4 slots. Nothing works, all components are factory, on board equipment. This is the form factor case. My email address is [email protected], please respond as soon as possible thank you.\015

Answers :

Dell Optiplex GX620 has a failure power supply. A some of the capacitors inside it are poor quality :( .In this case is an emergency procedure to start power supply (ie. for backup) : make a temporary shortcut between green and black wire in main mo-bo connector (24 wires) , and use normal Power On button. When main fan starts remove temporary shortcut.
The only time the CMOS battery would cause the PC not to power up is when the jumper for the CMOS is in the "Cear" position. I sense from your description of your problem, that you are familiar with the inside of your unit. I would suggest that you take the connector from the power switch off of the motherboard, then take a straight slot screwdriver and short the 2 pins for the power on the motherboard. If the unit turns on , then it is your power switch.
\015\012If it does not power up. I would remove all the boards from the unit and try to power up.If it powers up, put the boards back in one at a time, make sure that you power down/up when you do it If it still does not power up,disconnect all the cables from the hard,cdrom,floppy on the motherboard, Just leave the power connector on and then try to power up.
\015\012Let me know the results.
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