Recently moves stuff around on my site, Feel free to update the link to the new one.
http://www.specis.me.uk/2007/11/03/laptop-repair-acer-aspire-5000

Thanks. I updated the link.

I have a Acer Aspire 3680 that the dc jack has gone out on, twice, the first was under warranty, of course now it is not. The tech told me I could buy one from them for almost a hundred bucks but I find them all over the net for less than 10 bucks. The tech also told me that it is not soldered in, it clips in. Do I still have have to take apart most of the computer to get to that part or is there a way to replace just that part?

There is no easy way to replace the jack. The whole laptop has to be disassembled.
Here are instructions for taking apart an Acer Aspire 3620 laptop.
I think this model is similar to Acer Asprire 3680. Read the guide and decide if you can handle the power jack replacement yourself.
By the way, here’s another guide for removing and replacing laptop power jack.

I have a acer aspire 5610 and it fall so its not displaying anything and the fan turns a little when yu switch it on can somebody help me with a new motherboard or a solution of what it could be becoz the charger is charging the on light is on and it does not display

First of all, check the memory modules. It’s likely that when you dropped the laptop, the memory module got dislocated and now it’s not making a good contact with the motherboard.
Reseating the memory module might fix the problem.

My acer laptop
cooling fan making noise and can you fix. how can i make the noise stop.

If the fan started making noise, I guess it’s time to replace the fan.
On some Acer laptops the cooling fan could be accessed from the bottom.
Take a look at the Acer Aspire 5100 disassembly guide for example. The cooling fan is removed in the step 5.