If lcd light is not working in Samsung GT-S5830i then we will not be able to watch any text on display.light can be dim or may be blank.Samsung S5830i LCD Display Light IC Solution Jumper Problem Ways can be solve in a few steps as given in this post.
Samsung GT-S5830i Display Light Ways Jumper Solution Repair Ways
After dis assambling Samsung S5830i check mother board if there is any carbon water damage or rust.clean whole board with electronics cleaner and then apply hot air for a few mints so that it can be dry.
OR
Replae led if it is a jack lcd and if it is pasted then after removing check its prints value.if value is ok then replae lcd and if alue is missing then check whole parts componenets as iven in above diagram.check all paths and if any tracks of them is missing apply jumpers.
It will help you to solve Samsung S5830i LCD Display Light IC Solution Jumper Problem Ways
easly.
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