I have a Dell SX260 and mpegbox.com DSX12VD DC-DC power supply setup and it's working fine (boots up when I start the car etc) but it seems to lose power 20 minutes in.
Anyone have any ideas on why it's doing this?
Either the PS, CPU or MB. Add fans (temporary) to see if the amount of run time changes.
If you get more run time it is heat related. Solve the heat then look for the next issue... many times you will find more than one.
You can also try running the PC on your desk (out of the car with a regular PS) to find out if it is a PS issue.
D201GLY2, DC-DC power, 3.5 inch SATA
Yes, you should search... and Yes, It has been covered before!
Read the FAQ!
I have also seen failing hard drives do this. I think it was a circuit failure, not a normal motor/head failure
Once the HD warmed up to some critical temp, it just completely fails, and the computer, not knowing what to do, turns off. The HD makes one or two platter spin-up noises before power off.
I'm new to the forum but I've been having a similar problem with my dsx12vd. The pc seems to run fine then suddenly power will start flickering on and off repeatedly. The PC is turning on and off 1-2 times a second! Meanwhile the red status LED is steady on.. I notice the capacitors and even the wires running from the output are hot. I will try applying a fan to the board to see if heat is the problem.
The PC I have it connected to has a power supply like a laptop type that plugs into the back, that power supply is rated at 18 amps 220 watts max output, but I'm not sure what the PC is actually drawing without hooking up an ampmeter (my next step). Is it possible that I am overloading the power board, even though it runs for anywhere from 5 - 30 minutes before the 'power flickering'?