Usually if your LCD monitor's inverter is broken, the monitor's blacklight starts to flicker or goes off.
Yes easily if it is the same type of LCD screen.
eBay or craigslist.
You can take the LCD out and sell it on eBay or craigslist. Also the board is recyclable.
not sure
yes if it broken
You can purchase a PSP screen online and then replace it.
Yes but it will void the warranty.
A good computer shop should be able to replace broken parts to fix this.
If it is a LCD then eBay.
Yes but it is usually cheaper to buy a new one.
For scales it is easest to replace the screen.