LED on my Sony ICFC218 is dim

Unfortunately, it is not possible to adjust the brightness of the LED display on an Echo Dot. To increase visibility, you can place it in an area with more ambient light, or you can use a lamp or other light source to illuminate the LED display.

not sure about that one but there is a dimmer wheel by the light switch. move it up and down to dim and brighten the dask lights/cluster. wheel may need replacing. also work the lights on and off switch manually to see if there every thing works smooth or hopes from dim to brite.

To fix the dim brightness level, remove the battery and pull the plug out of the mains power. Leave it disconnected for at least 5 minutes then plug it back into mains power. You should find the brightness has retuned to normal. I have 3 of these Clock Radios and the picture attached shows the comparison between dim and normal. For some unknown reason they intermittently decide to dim themselves. This may be why Sony included a dimmer in the next model up ICF-C318. Anyway I hope this helps

Press the snooze button 4 times. The display toggles between lo/high brightness. ;-).

There is no adjustment on this model. Mine was too dim and the only way I was able to make the display brighter was by removing the front lens. I then used a nail and a knife to scratch and cut (from inside) the rectangular area of the lens in front of the display. It looked nice afterwards. If you need it dimmer, I would recommend putting a small shaded sheet behind the lens like the ones used for tinting car windows instead.

No it's not a alternator problem , Instrument cluster problem .
Fixing PRNDL odometer LED not displaying on 2001 Buick Century

CHECK YOU AUTOMATIC CONTROL FOR DIMMING GET TO 100%

ccfl tube goes down or inverter cirucuit is fail
need to replace it

The only way to brighten is to replace the ERC or computer

Does the dimmer switch in your truck make nthe light in the radio go up and down? if not the instalation was not done properly and someone left off the dimmer wire. If that does work and the brightness does go up and down, you may have an LED or Two out on the radio. Good Luck