Lid switch location??????????

Sounds almost like it's going into hibernation mode by itself. I could be wrong but I think it's located towards the rear of the keyboard and almost under the LED assembly.
Ron

I had a similar problem with my HP/Compac nc4200. Every time I had had the lid closed, the display would be black for a couple of hours, and then work again. I realized that the machine belived that the lid was still closed, and started looking for the lid-switch but I could not find it! The answer is that there is no mechanical switch! In the lid by the microphone (3 cm from the left hinge) is a small magnet hidden and in the base unit by the switches is a magnetic sensor (probably a hall-switch). Over time the the metal next to the sensor has been magnetized by the magnet enough to activate the swith even when the lid is open. The solution was simply to take a magnet and sweep it over the area a copule of times, and suddenly the screen came back to life! I am not sure for how long this fix works, but now I know how to fix it again.

I solved my problem.

The cable I mentioned terminates at a pretty weak connection just above where the power button is located. I believe what happens is that every time I jar the laptop, the connection wiggles loose, until eventually, the screen acts up. This explains why the screen will flash and why if I applied pressure in just the right place, the screen would come back.

I tested this theory once I figured out it was the connection. I am using my laptop now and the screen works fine again. I can even turn it upside down & shake the hell out of it.

To get to this connection, you must remove the Switch Cover and the Keyboard.

I hope this helps everyone.

Hii
My notebook is HP but I think these information would help you:

I should tell something about my HP Notebook case ( HP Nightmare)
My sister bought HP DV6338se notebook. It is special notebook !!!, What a special notebook!! As HP DV6000 series have BGA chipset problem, My sister notebook went down step by step; First we lost "Wireless Adapter", Second "Lan Adapter" and Finally we lost everything, It was not working. We bought it from US but We live in TURKEY. We tried to get it repaired in TURKEY under Global Warranty. HP Turkey has not intent to repair it, so I have to repair this silly branded notebook on my own.
I have purchased mainboard from Ebay. I choose different motherboard because original motherboard (HP Spare part number 443775-001) VGA chipset was embedded Nvidia Go 6150 and its performance was too bad for me, so I choose DV9000 series motherboad (HP Spare part number 432945-001) its VGA chipset is Nvidia Go 7600 (256Mb dedicated RAM).
I thought, both mainboard are in same shape but They aren't so I had to do some work on this new motherboard
1.Second Hard Drive Port removed (It didn't fit my notebook enclosure)

2.Front side chassis, Power LED, Battery Charge LED and HDD LED and their resistors are replaced from broken motherboard (443775-001) and placed in new motherboard (432945-001). Because DV9000 series motherboard's Power LED, Battery Charge LED and HDD LED's are in additional card and mine doesn't have such a card and doesn't place in chassis to put it in

3.Caps lock LED and its resistor are replaced in new motherboard (432945-001) because LED place doesnt fit for my enclosure.

4.Touchpad switch , touchpad LED and their resistors are replaced in new motherboard (432945-001) because toucpad switch, toucpad LED' place doesnt fit for my enclosure.

5. Battery connector removed back. (That was the hardest job to do, It wasn't easy to disassemble from board )

so I thought I had completed everything but I realized that My screen back light doesn't turn off when I close lid.
I did some search in Internet and with comparing two motherboard, I found the LCD Back light Lid Magnetic Switch.

[B]As mentioned above there are no mechanical switch inside notebook. There is only magnet in LCD enclosure and magnetic sensor switch in main enclosure.
magnetic sensor is 3 pin electronic part. It is like a BSD type transistor. I have look with magnifier and its part number " FD720 " It is located , just above external VGA port ,in motherboard.[/B]

My new motherboard doesn't has this part so I remove it from my broken motherboard to new motherboard.

I will try to attach pictures to show you,

Now it is working very well.

When I got problem with HP DV6338 notebook, I did some search and learn that I am not alone. Too many people are struggling HP notebook problems. With my experiences I learn that HP is not good at producing notebook, They are good at producing printer only.Other problem is that, They do not care their customer.I think that is main problem for HP.Every electronic stuff may go down or broken but good companies provide good,fast and reliable solution for their customers. I am sorry to say that but HP doesn't provide.

I hope these information's help others.

Regards

Mehmet Naci üLGER
TURKEY (My Country original name is TüRKİYE)

Suggest a solution. My HP laptop has been acting up for 5 months the switch now needs to be replaced. I have taken mine appart and it is a small black box with a little white pin in the center. it solders in to the mother board. I have looked everywhere and i am still looking. If anyone has an idea where i can purchase one please let me know. masie_jimbo@hotmail.com