Blackberry old model like curve 8520 8530 (Gemini), along with the time over time the buttons peel, although the main function is no problem but if we want to press the peeling button is like for the volume, camera shortcut, we will be difficult.
Only we need the ductility and thoroughness in disassembling and reinstalling the module or its components so that after re-installed it can function normally.
I bought a chassis like the picture below in BEC Bandung, the price is cheap not to 100 thousand, even far below it.
For you can replace it yourself many video tutorials on Youtube one of the following Video.