Switch v2 backlight problem

Hello all,
i have a switch v2 and recently the backlight stopped working , there’s image i can see it with a flashlight, after open it up, nothing obvius, tried to clean the connector and the ribon cable nothing still, tried to measure the voltages on teh conector and only have reading on the second pin(couting from the right) 3.8V nothing on the others.
After testing the diodes close to the ic chip for backlight controller (i saw in another post a guy showing the measures) all tested fine(no power flowing on the testing), tried to reflow the ic and still nothing, does any one have any idea of the voltages on the connector or is just a bad ic chip?

Thank in advance