Question about Computers & Internet
Usually indicates a bad Power Supply.
LED lights light, fans spin, but NO Signal on monitor.
No Video Signal, because the computer isn't sending one out.
Because the computer isn't working.
1) If ALL the LED's were on at once, they would use less than 1 Watt of power.
2) EACH fan uses 2 to 3 Watts of power.
3) A typical processor can use from 51 to 125 Watts of power.
Just depends on what Processor it is.
A Power Supply with a weak voltage power rail, will not have enough power to turn the Processor on.
However not to jump the diagnostic flow chart; check the monitor cable FIRST.
Use on another known to be working computer. If it checks out OK, the problem is the computer, and I think -> Power Supply.
Test the 3 main voltages on the Power Supply, with a multimeter set to DC Voltage; OR use a KNOWN to be good, Compatible power supply, for a test unit.
For additional questions please post in a Comment.
Posted on Jan 01, 2013
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jul 17, 2012 | Sharp Video Cameras
Mar 18, 2010 | Televison & Video
Jan 07, 2010 | Sagem PVR 6280 Freeview DTV Receiver /...
Dec 18, 2009 | Sony Playstation 3 (PS3) Console
Jan 10, 2009 | Microsoft Xbox 360 Console
Nov 22, 2008 | Sony Playstation 3 (PS3) Console
60 people viewed this question
Usually answered in minutes!