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Old 10-20-2011, 04:00 PM
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Join Date: Aug 2005
Location: Toronto
Posts: 394
AUTA 6000 Antenna Overload Unit Bad?

has anyone seen a how-to on testing the overload unit inside the AUTA 6000 EL? the antenna on our '87 300TD just died suddenly and it seems the overload unit is bad. the antenna has worked perfectly for years, i've changed the mast a few times over the years and i've always tried to keep the mast clean with those hirschmann wipes. but now the antenna has failed and for sure there is no power to the red and green wires that are the outputs to the motor from the overload unit.

it's probably a waste of time to try to test the unit, but if i knew how to do it i might try. wrecker parts for this kind of car are not too easy to find locally, there aren't many yards around here with 124's.

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Old 10-20-2011, 04:56 PM
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Join Date: Nov 2007
Location: Lutz (Just north of Tampa) FL, USA
Posts: 327
Try Resoldering

I had a similar problem with mine and took the circuit board out, cleaned it with contact cleaner, re-flowed all of the large solder joints (avoiding the smaller surface mounted components), and re-assembled using dielectric grease on all the connectors. After that it worked like new again. Some Googling led me to a post on another discussion board that had a pictorial. Check it out here- If your antenna stops moving - - Mercedes-Benz Discussion Forum
'82 300D - Light Ivory, 2nd Owner (Back in the wind April 2013!)

'95 E300D - White, grey interior. (Suffering from stuck/broken glow plugs)

Deuteronomy 22:4-
"Thou shalt not see thy brother's ass or his ox fall down by the way, and hide thyself from them: thou shalt surely help him to lift them up again."
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