Repairing laptops, phones is easier these days because of all the help that one can get over the Internet. YouTube has videos on how to disassemble popular laptops and phones. the Speaker on my HTC desire HD phone stopped working last week. As usual, I thought the issue was with the operating system that I had installed on my rooted mobile phone. I restarted the phone several times, I tried factory reset, reinserting the memory card and SIM. No progress. I then watched the following video on how to take my phone apart.
I read somewhere on the Internet that the speaker has two springs which may lose their tension and need stretching. I ordered the a phone repair toolkit from Amazon, followed the instructions from the above video, to the tiny speaker out, used it Weezer to slightly stretch the two tiny springs attached to the speaker and reassembled the phone. Voilà, the speaker started working again.