Computer won't boot after circuit breaker blown Thnx! New power supply worked!
Posted 26 May 2005 - 01:28 PM
Posted 26 May 2005 - 01:44 PM
When you hit start on PC, what if anything happens? Fans? Lights?
Posted 26 May 2005 - 01:55 PM
Posted 26 May 2005 - 02:04 PM
Some power supplies will offer limited function if they are damaged, allowing fans to spin (12 volt rail still works), or motherboards to beep or lights to flash (3 volt still works), but if the 5 volt rail goes, your power supply will not function (video cards used to use 5 volt rail, but I think only the power switch still does, irony of irony)
Some power supplies have a circuit breaker built in, so check the back of the PC.
Also, check to make sure someone didn't hit the rocker switch on the powersupply.
Posted 26 May 2005 - 02:23 PM
Posted 26 May 2005 - 02:33 PM
Ground yourself to prevent static shock, open the case....smell anything?
Look at the motherboard...any burn marks?
If nothing, I would lean toward the psu...easy to replace...four screws, one or two plugs to the motherboard and one plug to each drive.
The tricky one is the motherboard, which will have a locking mechanism you have to unlatch, but the rest are just pull and plug.
Posted 26 May 2005 - 02:41 PM
There was no burning odor. I will try replacing the power supply. Can I take the power supply from an older computer that I haven't used for a year?
Posted 26 May 2005 - 03:50 PM
Looking at the current PC, how many connections run from the PSU to the mainboard? One large 20 wire connector and one 4-wire connector?
Does the old PSU have those two connectors?
How many watts (output) does the old PSU output? Modern computers typically require 300watts, though a 250 might suffice as a test....below that, it may not have enough to start.
Posted 27 May 2005 - 09:03 AM
Posted 27 May 2005 - 09:55 AM
Posted 27 May 2005 - 10:16 AM
the old PSU does not sound like it will work, but not being able to see it :shrug:
Posted 27 May 2005 - 03:51 PM