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A BTX computer introduced in 2006 using a Intel LGA775 socket processor. The 5150 is identical to the E510.

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My power supply is getting power but not distributing it.

I am using a Cooler master 500 Watt Power supply for my Dell Dimension 5150. It appears that it doesn't have any bleeding capacitors yet it still can't distribute power. I am getting a Blinking Amber power LED. What issue could this power supply be having?

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Have you checked that all the cables to the motherboard and drives are properly connected, by disconnecting and reconnecting them?

A blinking amber power switch LED means the computer is receiving electrical power, but an internal power problem might exist.

It can indicate a bad power supply, in most cases, getting a new power supply will fix the issue.

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Hi @proelectronics ,

Test the PSU using the paperclip test to check if all the voltage outputs are OK.

Has this PSU worked OK before in the desktop or is it a replacement for the original?

If the PSU tests OK, according to this link, a blinking amber problem with this particular PC model is in the front panel which houses the USB ports and the Power On switch.

Some have solved the problem by disconnecting the panel from the motherboard, which makes it hard to start the PC as you have to know which pins to short out, simulating the power button, to start the PC.

Others say that by just disconnecting the wiring from the USB ports in the panel itself (damaged pins apparently) resolved the problem.

Here’s an image taken from p.67 of the owner manual showing the location of the front panel header pin connector, that may help.

Block Image

(click on image to enlarge for better viewing)

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