Compaq presario r3000 blown cap/diode

hi i have got a compaq presario r3000 works fine with the a/c power adaptor,but the battery does not charge or switch over to the battery when i pull the power cable out.
So i took the note book apart and found on the motherboard a blown cap/diode near the power supply jack i can not read whats written on the blown cap/diode because there is not much left of it, but somthing is written on the motherboard (PD 1)where this part go's i would be grateful to anyone who has a motherboard taken apart or know what this part is and would it be possible for a part number or where to get it from.
i did try to bridge it with solder but the notebook did not come and it just made a buzzing sound from the power supply so i took it off and it works ok with the power supply.

cheers for the info the battery works fine and i have got a spare one to,there is somebody on ebay selling a (water damaged) motherboard but he wants £50 inc delivery i think its a lot of money for the one part i need.i did try to email him but got no reply.
i also did notice some more diode/cap on the motherboard that looked a bit like the one blown but i can'nt relly make sure if it is the same because there's not much left of it

Thank you very much, I must have been using the beta version of ebay because only a hand full of items where only shown but when i opted out of the beta version i got a lot more listings anyway i offered him £25 and he accepted i'll let you know how i got on once it's arrived,once again cheers!!

i got it working not with the other motherboard i brought,i did this i soldered the negative feed from the motherboard DC power jack and the positive feed too then i soldered the wires onto the neg & positive on the other end of the motherboard where the battery go's.(top of the motherboard not where the battery slots)


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this worked but every time i pluged in the power supply the laptop switched off after 20 sec,so i removed the positive wire and left the negative and it works battery chargers and the laptop stays on when i plug in the power jack.