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They may not Look blown, but they yet may be. (hairline cracks are difficult to see, and very effective at stopping current flow.)
Replace all of them for good measure.
This happened to me twice since I had my car. The first time I replaced one fuse (I don't recall which) when all the gauges quit. Rather than your whining sound, I heard more of a weak buzzer sound, just as you are.
The second time, my tachometer and oil pressure gauges were bouncy, and my "bulb-out" light kept coming on. I replaced all the fuses and the problem has not returned.
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2008 E350 4matic / Black/Anthracite
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Gone but not Forgotten:
2001 E430 4matic, 206,xxx miles, Black/Charcoal
1995 E320, 252,xxx miles, Black/Grey
1989 260E, 223,00 miles, Black/Black
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