compaq evo n800c / n800v quick question on CPU fan

I'm trying to repair a n800c that doesn't power up. The symptoms are: power indicator is on, battery charges, HD spins when turned on. However: cpu fan doesn't spin, no blinking LEDs, no beeps, nothing shows up on screen.

I've tried replacing the CPU/fan/RAM but it's the same. I measured about 0.6V on the fan connector, so it seems no power is sent to the fan. The CPU and chipset seems to have power (they get warm).

Here's a quick question: how much does it take for the CPU fan to spin when turned on? Does it require a functional CPU/RAM/chipset?

I have another motherboard that I can salvage parts, so if it's simply a power regulator problem I can probably replace it, but if it's something else then I'm out of luck.

Any comments is greatly appreciated. Thank you.
1 answer Last reply
More about compaq n800c n800v quick question
  1. I think it would require the motherboard to work correctly. The mobo transfers electrical signals to all of your parts. If you can replace the mobo, you should fix your problem.
Ask a new question

Read More

CPUs Power Laptops