Help me pls

May 06, 2009

-   i to hav d same problem .. i asked the professionals they say tat there is a prob in d motherboard it seems ... they r asking a huge amt for repairing it......... don no wat to do... is there any alternate way .... nw i m using my laps only on ac power.......... i m a student pls help me...... -   praveend

Jan 07, 2009

-   Im Having the same Problem with a laptop im using, (HP Compaq NX9010) on the actual batteryit ays it is fully charged, but when i disconnect the power suply the laptop just cuts out (turns off).. it did work for a day without the power supply connected (and after charges) but then it stopped working -   Ogre35010

Oct 07, 2008

-   My laptop doesot turns on!!!
I had shown it to a proffessional . He said that there is some motherboard problem & it requires big amount to repair it.I dont believe in him.
But i want to know that what may be the probable problem & how much it cost to replace the total power unit supply.

laptop model- IBM R52 , Intel centrino proceesor-   gd87200

Mar 11, 2008

-   hi every one i have a fujitsu c-7651 it dosn't power at all i think it mite be the mother board i checked the power supply with a multy metre under
1 amp dummy load it came up fine dos anyone know of faults with this modle and are there any generic modles out there as its great for our situation (at sydney rpa hospital all the time wife has cancer an we can keep in touch with kids at home via hospital net )if any one can help it would be great,thanks in advance from rob.nowra nsw 02 44434878
roberttilbury@yahoo.com.au-   dingo 2540

Jan 05, 2008

-   2008/01/05

Hi Folks, Happy New Year and Great Week End!

I only need replies from fellows with technical minds and not blind guesses, because I do know little bit about electronics and a lot about batteries.

About 2 years ago I bought a used but very new generic brand G733 1.66G lap top for my kid. It was used with the original "EMC31J" battery and power plug. In approx. 6 month time, the lap top started to strike. It could boot after many many attempts if we were lucky and then followed by a completely dead response. I searched the web and there were incidents identical to mine. e.g. cannot start at all, cannot start with power plug alone......... . From that I can be almost sure it is the power supply circuit within the laptop. I wrote to ECS and you might guess what sort of "official reply" I can expect to have!

Last fall I took the lap top to the Orient to a friend who once worked for ECS. Unfortunately, he only knows Desk Top mother board at the time he was an in-house PCB repairer. He sent it to another friend to fix it and it worked fine for about a 2 weeks only, and then it happened once, only once, that I needed to make many attempts before it booted - a bad sign!

Now, in short, it reverts back to what it was, need to press the start button many many times before it gets up, or not at all, with battery unit but "w/o" power plug.

This morning, I dissembled the battery unit to explore more facts. It is a 4group x 3cells, each still delivers 4V, with a 16V OCV. vis-a-vis the 14.8V nominal. The battery unit is still good!

I then pluged back the lap top, and none of the 7 pins shows any sign of viable voltage. Unless there is a "soft switch" built-in the battery unit to turn on the charge or "use" circuit, the mother board power circuit simply provides nothing to power the machine.

With this type of lap top, I am not prepared to spend big money. Would any one with technical know-how come forward with suggestions.

Nic



-   Guest