LED screen not working

I also had this problem. I turned it off and it would not turn on. I found the solution. First, extend the laptop screen as far back as it will go. Don't just stop the screen at a ninety degree angle. My laptop screen pulls back to about 135 degrees. Now press the power button. It should start up.

Why do I think this works? Well...I used to own an older model thinkpad that had a short "male" connector on the screen, that when the screen was folded down would enter into a "female" connector on the base of the unit and trigger sleep mode on the unit. This is how the system could automatically hibernate when the screen was closed. The little male connector broke off, and I couldn't get the system to wake up, because the connection to tell the laptop that I had the screen up or down no longer worked. I couldn't even power it up. I had to take an ink pen and push the connector through the female end to indicate to the motherboard that I'd opened the screen before it would even turn on.

It appears that the same type of mechanism is built into the long BAR under the screen of the NV52 and somehow it can't determine when the screen is open or closed. If it detects that the screen has not been opened, it won't power up. This safeguard prevents the laptop from being turned on mistakenly while closed up in your laptop bag. Extending the screen back resets the mechanism and it should turn on. Sorry for the long explanation...

the manual for your motherboard can be downloaded here:
http://www.msi.com/index.php?func=downloadfile&dno=3812&type=manual

On page 2-17, the pin-outs for those connectors are specified in detail. They are part of the JFP2 header:
PIN SIGNAL DESCRIPTION
1 HD_LED_P Hard disk LED pull-up
2 FP PWR/SLP MSG LED pull-up
3 HD_LED_N Hard disk active LED
4 FP PWR/SLP MSG LED pull-up
5 RST_SW_N Reset Switch low reference pull-down to GND
6 PWR_SW_P Power Switch high reference pull-up
7 RST_SW_P Reset Switch high reference pull-up
8 PWR_SW_N Power Switch low reference pull-down to GND
9 RSVD_DNU Reserved. Do not use.

-Jon

the power switch is on the 3 and 4 pins....the 7 and 8 pin are the reset pins. Trying it on wrong pins just won't startup the board but won't short circuit anything.

For those searching the answer "How to replace/repair Creative Inspire 5300 volume control":

Its simple : looking at the back of the suboofer, the pins are as follows from top right, clockwise : LED VDD , Balance pot middle leg, GND, pots + legs, Volume pot middle leg, on switch input. Connect one pots ends to GND and the other ends to pots +, connect a switch on GND and on switch input, anode of led to LED VDD, cathode to GND (there is a 1,8k resistor inside so no external resistor needed)

Try tapping a corner of the camera on your palm 2-3 times..it usually works..

If green LED is blinking constantly when camera is turned on, this is a known problem with D70. Upgrade camera firmware from nikonusa.com website.

Hi, sounds like the case switch is stuck, leave the cable from the switch off and try to bridge the pins out, the after the computer is running try shut down by bridging the pins again, if this works clean or replace the switch. Regards mistyman

This is an intermittent failure of the CCD There is nothing for us to help you with in my opinion- Your camera is dying. Depending on how old your camera is and the date of manufacture it is possible that Canon will replace it or supply a refurbished one for free. This is known problem as far as I can tell

Try using a small pin to trip the micro switch that is located at the top of the card door. This switch is a little dodgey if it doesn't make correct contact the camera will turn on but the screen won't display. Did it woth mine and worked after that.