LCD Monitor PSU

[giammyzanna]

Hello, this is my first post here and I believe this is a very easy question.
I have attached a schematic of an lcd monitor power supply. I have two different monitors but they have a VERY similiar primary side. Basically they won't power on, no standby, no nothing. The caps seem good at a glance.
The first thing I did was to check the fuse and it's open (on both monitors) so I decided to replace it on the acer (I had only bigger fuses lying around, the one that was on the monitor was rated 4A) and as soon as I plugged it in the NTC on the other side popped (so the braker did) so I stopped there.
First of all what is that NTC doing there, I know it's a temperature sensor so I can't see the use of it.
Second, the dell monitor I think is pretty much the same so I decided to not do anything before anyone more skilled than me can help.
Any ideas on what to check for?
Thanks in advance!

[Jwillis]

First off those circuits are EMI filters and surge protection.Reducing noise into your system.There only part of the supply.If your blowing fuses then theirs a problem deeper in after the rectifier.That NTC is a negative temperature coefficient thermistor .It decreases resistance as the temperature increases.That is use as a surge suppressor. 

[0xfede]

Hi giammyzamma, the NTC is there to limit the inrush current caused by fast charging of the big electrolytic CAP after the bridge rectifier.
If your NTC blowed up you have probably a short circuit on the switching device. Other possible causes are the bridge, the rectifiers after the flyback transformer or the load itself.

Best,
0xfede