Power Jack Problems

[TheFloatingBrain]

I have a lenovo Y700 laptop and I started having problems with my power jack earlier this week.

At first I thought it was because the jack wasn't staying mounted in the case, however when I

glued it down the problem persisted. I then thought there was glue inside it, there was, but after I got

it all out, the problem remained. If I moved the plug, pulling it to one side or the other for instance,

the computer would receive power intermittently (the plug inside the jack, moving the cord did nothing).

I ordered a replacement part on amazon. At first I was delighted that the cheap repair appeared

to work but this part too seems to cut out on average probably once per hour at which point it would

require (much less drastic) me moving it around inside/the jack (what little mobility that is) again.

But it usually stays longer this way (though some movemets only hold a little while) I pulled out a DMM today

to do continuity testing on both jacks (both while they were unplugged from the mobo and plugged into the mobo

while the computer was off), they appear slightly different but they both make sense and have

recognizable patterns. I did a little bit of testing while the computer was on and got similar results as the

extensive testing with the computer off/the jacks unplugged from the mobo, however I was not able to

reproduce the conditions that lead to a bad power connection and was unable to mesure what was

happening. I noticed the new part doesnt seem to fit as nicely on the prongs on the mobo as the one

that came with the computer, the leads inside the plastic connector seemed to jiggle around, I am wondering

if this has something to do with it it (though they are still making contact) or the fact that it appears to be

wired slightly differently than the one that was already in there. Does anyone have any idea what might

cause this? Bad cap on the mobo? Need a more quality part? etc.

 

Thanks!

 - TFB

[ifoggz]

Hey there. I know its an old thread but I do alot of cpu intensive tasks which cases the charger to kick in high and you'll notice that where charger plugs into the power jack inside laptop get hot. its really a poor design i've replaced the jack 5 times already. it gets hot and the port warps a little and you'll notice a little blackening from the black plastic inside the charger jack. flawed design