Soldering Issue DC Jack

[Misan]

Hi guys - I have a Compaq 6720s laptop with a faulty internal DC jack. I have a replacement jack, however when attempting to desolder the old joints they simply won't melt. I'm using a cheap 30W soldering iron which has the end tinned. However I can hold the iron on the joints for up to 2 minutes and the solder refuses to melt.

I suspect the issue may be to do with the solder type used by Compaq, and potentially my iron simply isn't high powered enough to melt the solder.

Has anyone come across this issue with Compaq/HP laptop repairs?

Cheers

 

[paradigm]

You most likely need a combination of a decent flux and a more powerful iron (it won't be holding temperature and heating the joint up fast enough).

 

[matthab]

When I did mine I used a 45watt soldering Iron If I remember rightly. I used a flat point rested it across the tab and pulled off with pliars. Once I did that I changed to a needle nose end and solders the new jack in tab at a time to prevent solder going on the board.

You have to be careful not to heat everything else around it. Also watch the jack as it conducts the heat and pulls it away from the joint.

Ive only done it once and found a it a nightmare. Any other time I get given one to do I recommend a company called Micro nano.

 

[Tealc]

Try melting a dab of solder onto the joint you wish to melt. This often helps with the heat transfer from iron to solder. The solder you are melting could be the non lead stuff too which needs a higher melting temperature.