R129 radio fault

[dandpl]

R129 SL500
When radio is turned on it flashes and there is a pulse on the internal door lights. Antenna does not rise Fuse 6 in rear compartment seems ok as other functions work.
Today it was working after 20 minutes of driving

[PositronicRay]

If bullet fuses, clean them, all of them not just the ones you think are relevant.

Reseat any connectors you can get to with some contact cleaner. If your car has BOSE, you'll have an amp under the rear seat too.

[dandpl]

Changed the fuse and it worked once or twice and then stopped>

Repeated with the same result?

[dandpl]

All sorted with a new mast. Simple really. Thanks