Help with Laptop not POSTing

[Cali3350]

Hey guys, I had to replace the DC jack in my Inspiron 9300 and it appears to work correctly. Plug a battery in and it charges just fine. However when I turn the computer on it does not POST (or beep in any way at all). I turn on the power, the fans spin up, the HDD spins up, and then about 5 seconds later it all just shuts down. Ive tried taking the HDD and the RAM out to try and get some sort of beep code and i get nothing.

Im completely stuck, does anyone have any idea what the problem may be?

 

[mpilchfamily]

While soldering the DC jack on you may have overheated something. In which case you would have only a couple of options. One is to replace the main board of the laptop. and two is to completly replace the laptop.

 

[Cali3350]

Hey, thanks for the quick reply!

Its possible that the motherboard was overheated, however I put a battery that was dead in and it has charged to full in the normal time. Also the jack was punched in (and i punched the new one in too) no heat was used.

I appreciate the response though!

 

[TheKub]

When powering it up where you doing it on battery or AC? How do you know the battery is full (I assume led indicator on the battery)?

 

[Cali3350]

LED on the battery. I have tried booting the laptop from a full battery and from the AC adapter.

 

[Cali3350]

Hey guys i wanted to let you know i wasn't correct in my earlier post. The fans are NOT spinning. ONLY the HDD is making noise when the power button is pressed. I tried starting the laptop with it disassembled outside of the case in case the issue was a grounding contact or something. No go.
Appreciate any ideas