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Flea power does not indicate good power supply.
Dell says Bad power supply.
Blinking Yellow/Amber Initial state of LED at power up. Indicates ICH has power, but the POWER_GOOD signal is not yet active. If LED remains this color, it is probable that the power supply needs to be replaced.
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I started having this problem when the 520 turned 3 years old. 1st suspect was the HDD, replacing the HDD did nothing to resolve the issue. Don't know were the problem is but do think it's tempreture related as it happens more freequently on hot days. Ran the 32bit full test from the restore CD.... all tested OK so either the problem escapes the test or the test is not thorough enough, either way I have an unreliable CX520... anybody want it? it's useless to me, DELL won't help and I don't fancy paying for new power supply as a trial and error option.
I really do not like DELL's do-it-yourself policy on their products that have run out of warranty. I think DELL should be more supportive towards their customers... maybe they should learn from APPLE on how to run their customer service/support. Last DELL I'll buy... product Ok, support stinks!
I had 2 other DELLs with problems (Boot sequance slowed down to about 2 hours... i.e. took 2 hours to boot), DELL was no help also
We have purchased about 60 Optiplex 520 and 100 Optiplex 745 both small form. The power supply in both models VERY frequently dies and sometimes take the motherboard with it. The warranty for all these computers has expired and the worst part is Dell refuses to allow us to purchase replacement power supplies. We tried for 18 months!!! They have left us out in the cold. We are a state agency (read No budget again). We had to source the ps from another vendor. In the long run it was cheaper than replacing the unit.
I have this same issue as well and have had it since I purchased my Dell. They have sent me two power supplies and they work awhile then the orange flashing light starts again. I too have working fans and there is no good reason for the light? I had never tried turning off the surge but I had unplugged it. None of it worked. I went out and bought yet another power supply from a computer store and viola the silly thing started flashing again after two months. I have found if I take the battery off the computer and then place it back on and the light stops flashing...... All I can say is Boo to Dell. They have to know this is a massive issue. Good Luck!