k on my V3 tama i was playing and i put it to sleep, when it woke up, half a line of pixels were gone!! and are STILL gone!!! can i fix it? if so please reply!!
As others have stated above, try replacing your battery, if that doesnt work, try TAPING your battery down in the correct place in the back of your Tamagotchi.
Otherwise, I'd say that you have left your Tamagotchi in the sun, which can fade the screen.
last time that happened to me and my friend, all i had to do was squeeze the corner of the tamagotchi that the blank row is nearest too. most of the time it will show up when you squeeze it, but then go away again when you let go.
to fix it:
open up the back of your tamagotchi(like you are replacing the battery) and tighten the screw that is closest to the place you squeezed. if it dosent work, tighten it more!