I see three possible reasons, all of which require you to remove the unit form the dash and open it:
- The Display-panel is connected via LVDS, which is form of a digital bus widely used in LCD-panel devices. The display has two connectors: one is for background lighting and the second (which has as many subcables a the colordepth of the panel is, e.g. 8) is for the display signal. If the wide connector is not plugged in properly, a loss of information displayed is likely. I am not sure this causes flickering, though.
- The backlight connector might be loose. This will indeed cause flickering
- The drivercircuit of the LCD-panel or its LED-backlight powersupply has died or is about to die. Check procedure: Remove unit form dash and open it. Use Ice-Spray to cool down the circuit you suspect to have failed, target the driver area and observe the units behaviour. Does it change while cooling it down? Then, use a household blowdryer, apply little heat and repeat the above procedure. Any changes in flickering? If yes, then the respective circuit has a hardware fault and need to be replaced or refurbished. A common cause is the premature death of condensors or R/C-chains.
If you can't follow that description or don't even know what the heck ol' Wayne is talkin' about, then you definitely shouldn't even bother to try and solve it yourself. Give a company like
a call and have them fix it for you.
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