Today I discovered an interesting problem with the gauge cluster on my 2004 S2000. The gauge cluster seems dim, even when set at "full bright".

I verified that it was full bright by pushing the "-" button then "+" button repeatedly until the brightness was maxed out, followed by holding the "+" button to get to "full bright". It gets brighter, but only a little bit, and not significantly brighter like it used to. Any idea what the problem might be? Bulbs? The dimmer? I can't seem to find anything about others having this problem before.

TIA.