instrument cluster light problem (dimming)

[eddieboyii]

my instrument cluster (the one with the mileage, temp, and check control screen, etc... under the tach and speedo) is dimming, then when you unplug the battery then you plug it again, it returns to normal.. then after a few on offs of the lights, it went back again... what seems to be the problem? there is no problem with the pixel... the pixels itself are just dimming... even when adjusting the rheostat, it does not work... only the other lights like the speedo tach and radio displays are working with the rheostat. help...