HP Pavilion series G6-brief power only

[sparker1]

Hello, I have a HP G6 that when the power button is pressed will light for about half a second and then shut down. The bench power supply also shuts off. So I think there is a short somewhere. I have tried a second motherboard and it does the same thing. The common factors are the power jack and the power button board (the power supply is fine). I supect the power button board. There is 3.3 volts at pin 5 of the flex connector on the MB. Is there a way of jump starting the board and not using the power button. Unfortunately I can't find a schematic and I'm a noob when it comes to reading them anyway. I have attached another schematic for a different G6 and the parts in question (power button and connector) look the same. The board I have is DA0R12MB6E0. Some photo's are also attached. How can I jump start the board?

[khaahk]

Re: HP Pavilion series G6-brief power only

Short the g1 pad to start the board. It is not likely that the problem lies there. Hp needs a smart adapter to work, how did you connect the lab supply?
The schematic can be found via google.

[sparker1]

Re: HP Pavilion series G6-brief power only

Thanks Khaahk. That reminds me, one of my old boss's was from Estonia lol. Anyway, The lab supply was set at 19.5 V and 3.5 amps with the appropriate connector and I set a current cut off for any short circuit detected. I have used it many times with different laptops, including HP's, without any problems. I think Dell is the only one that gave me problems with their "third wire". The LED at the adapter is lit as if there were no problems. So I don't think the problem is in the lab supply.

The only google sites that have the shematic are commercial ones. I don't want to buy it just for this one off problem. I have added many schematics to the repository here and likewise I was hoping somebody may have one to share.

I'll try your suggestion. I will let you know how it goes. Thanks for your help.

[khaahk]

Re: HP Pavilion series G6-brief power only

Thanks Khaahk. That reminds me, one of my old boss's was from Estonia lol.

Good one i hope

Most of older hp-s did not even start standby voltages without id pin. The new ones might be different though. Dell turns on but wont charge without id.

[sparker1]

Re: HP Pavilion series G6-brief power only

Good one i hope

Most of older hp-s did not even start standby voltages without id pin. The new ones might be different though. Dell turns on but wont charge without id.

He was the best! A big viking sized, barrel chested, bearded man but really new his stuff and did everything with a minimum of fuss. I lived in Fiji at the time.

Anyway, one of the boards no longer has the LED at the power plug and I found a nearby mosfet PQ45 that is red hot. I'm going to change it out later today. Thanks heaps for the schematic.

[borbooroski]

Re: HP Pavilion series G6-brief power only

Can I see the pic of the g1 pad to start the board.