Dell Dimension 5150 amber light flashing (solved)

at startup of my Dell it failed showing an amberlight flashing. Due to it's age I replaced the cmos battery but that didn't help. I opened the powersupply and saw some elco's that were brown on top. Funny was that I could get it to run by setting the reset switch on the motherboard and reconnect power. It would than flash amber fast and after a few seconds boot itself up. So I was sure nothing wrong with the pc itself. I found on the internet This pc uses a standard psu so I replaced it with an Antec BP350-EC and everything fitted nicely and my DELL is back in good shape.