They are so inexpensive, it is hard to justify working on them. You might try plugging in a headphone, if that works it is a speaker problem. If not make sure that your PL/DPL is set correctly.
_________________
I am what I am, somebody has to be.Call me for free from anywhere in the USA from my homepage!
http://www.azrial.com/CF-31JEGAX1M Mk2 Intel i5-2520M 2.50 GHz, Win7x64 & Ubuntu x64 14.04LTS Dual Boot, 16GB RAM, Samsung 250GB SSD, 2x64GB USB FD, 64GB SDHC, GOBI 4000, BUGPS, IBM AC/DC Supply #22P9003