Compaq C300 won't boot

howste · January 6th, 2009, 04:54 PM

Quote:

Originally Posted by azblk

I have the exact same problem on c300 notebook. It is the dc jack that is the problem. If you wiggle it a bit you will get it to work for a while but you have to replace the jack to fix this.

This doesn't work on mine. I used a multimeter to thoroughly check AC adapter and the DC jack, and I even verified the correct input voltage directly on the motherboard. All is as it should be.

Quote:

Originally Posted by Steve R Jones

Has anyone tried a different AC adaptor and or new battery?

bellanca guy · January 6th, 2009, 06:45 PM

I replaced the AC jack from a spare C300 and it still does the same thing. I am sendinf mine to a guy in California tomorrow who claims he can fix it. I'll let you know what happens!

howste · January 6th, 2009, 06:57 PM

Quote:

Originally Posted by bellanca guy

I replaced the AC jack from a spare C300 and it still does the same thing. I am sendinf mine to a guy in California tomorrow who claims he can fix it. I'll let you know what happens!

Please do. My daughter needs her laptop back!

bellanca guy · January 30th, 2009, 05:59 PM

I sent mine to a guy in California. He charged me $145.00 and replaced a componant on the motherboard. it works great. Email me direct and I will send you his contact info

dewey.elsik@verizon.net

Steve R Jones · January 31st, 2009, 05:16 AM

Did he mention which component?

bellanca guy · January 31st, 2009, 11:03 AM

All I was told is that a power regulator was not putting out the 5 volts it was suppost to. I have had it running for 4 days now and it is running great.

howste · January 31st, 2009, 11:43 AM

Thanks again for posting back.

There was another thread about Dell laptops with similar symptoms that had a bad resistor near the power connector on the board. I'm going to see if I can find a bad resistor on this one. If not, I may have to spend $145 to fix a laptop I got for $199 on a Black Friday special...

HuntComputing · February 5th, 2009, 07:39 PM

i have this same problem i have tried diferent ac adapter with no luck i believe the moboard is just fried o well

howste · February 6th, 2009, 01:00 AM

This thread gives me hope: Possible solutions for burnt-out circuitry on Dell Latitude D505 mobo?

I posted in that thread what I've tried. I need to disassemble it more to get to the other side of the board . Then I'll check to see if I can find a bad capacitor like they were finding. Maybe I'll have time tomorrow...

howste · February 9th, 2009, 12:56 AM

Bah. I have the whole thing disassembled, and no such luck. I may have to give in and get some professional help. I may have someone fix the computer too.