Can't hear phone calls?

[mjliu]

About a week ago, the internal speaker of mytouch 3G slide stopped working. I can only hear through headsets or the speaker. I've factory reset the phone 3 times, and it works, but about 6 hours later, it just stops working.

 

[RazoE]

I know you don't want to hear this, but your flex ribbon is on its way out.

Does your screen act stupid and draw everything the wrong way? Did your keys stop lighting up?

This happened to me recently, and I had to take the entire phone apart and replace the ribbon.

Here are a few helpful links

http://forum.xda-developers.com/showthread.php?p=7327443

http://www.repairsuniverse.com/htc-mytouch-3g-slide-motherboard-flex-cable-replacement.html