My 6006E started to lose all FM stations after about 5 minutes of being switched on. They simply fade away. AM and CD play fine. Ford said I need a new unit at £503 plus VAT. I got a 2nd hand unit for £190 but I'm left with a unit that perhaps I can fix if I can identify the fault. It's as though it was receiving no signal.
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Try fixfault.com to fix in-car audio.