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  #1  
Old 04-26-2004, 07:53 PM
BenzGal
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Exclamation My radio is possessed!!

The below quote is from a problem I was having a few weeks ago.

[My favorite station is 99.7. Also #1 on my preset channel list in my factory Mercedes radio. For about a month now that is all my radio shows (99.7). However no actual sound. None of the buttons work, I can't turn it on or off, up or down, I even tried putting in an old tape... nothing. Now here is the crazy part. When I turn off my car my radio still shows 99.7. I tried unpluging the fuse in the fuse box that connects to the ashtray, but no difference. And the really psyco part is that after I turn off my car if I put up the antenna and listen real close I can hear the damn RADIO! Is there any kind of quick fix to this problem?]

Well, the rebellious radio just decided to turn itself back on one day, and worked fine for a while. However, every now and then, it will just completley freeze when I start the engin. When the car is off it looks normal. And in a few days I will turn my car on and it will be working again!
When it is frozen, the numbers look like a smushed calculator screen. I always make sure to turn off the radio and let the antenna down before I turn off my car. What the freak is wrong with it ?!?!? Any suggestions, ideas or numbers to a good exorcist?
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  #2  
Old 04-26-2004, 08:03 PM
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Before anyone else asks, this is on your 1990 300E, right? factory radio?

Gilly
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  #3  
Old 04-26-2004, 08:04 PM
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MTI MTI is offline
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This is the 1990 300E? The intermittent problems could be a failing circuit in the radio, including any number of IC's or other parts. Unless someone has a direct fix for these symptoms, the best bang for the buck might be to get a new radio/CD unit installed or some other upgrades to the system. Good luck.
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  #4  
Old 04-26-2004, 08:20 PM
BenzGal
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Yes factory radio.

And Thanks Guys!
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  #5  
Old 04-26-2004, 08:26 PM
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That radio has a removeable faceplate. Not EASILY removeable, but it does pull off and is available as a seperate part. i am thinking possibly that's what it is. The dealer is supposed to have as a special tool "test" faceplates. If you can get it to them in a failed state, they may want to try plugging in a test faceplate. A new faceplate though I believe may be as much as $200, which would go a long ways towards an aftermarket radio, and then you would also have a CD Player, which I'm sure would appeal to you, so you may want to consider that before having any testing done. I don't think there is a quick, easy fix to it.

Gilly
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  #6  
Old 04-26-2004, 10:31 PM
BenzGal
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Thank yall so much!!
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  #7  
Old 04-26-2004, 11:38 PM
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benzgal,

the "smashed calculator" symptom happens often with my 1989 190e2.6 factory radio as well, in the colder months of the year. Must have something to do with condensation or the cold.

what i do is simply temporarily disconnect the power to the radio. I do this by simply temporarily unseating the radio's fuse from its connector (#13 on my car), by pressing on its connector to temporarily break the circuit. After this, I ensure that the fuse is properly seated back into its normal position. This resets the radio, back to normal operation.

Always has worked for me. Fuse#13 is hard to reach though, in my car.

Tell me if this works for you.
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  #8  
Old 04-27-2004, 08:55 AM
LarryBible
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Yes, these radios sound good and work well until they go Schizo as you have experienced. When mine does this sort of thing I have to reboot as Bobby describes, except sometimes, I simply disconnect the battery. When I do, I leave it disconnected for about 30 seconds to ensure that all capacitors have a chance to discharge.

Mine usually exhibits problems upon changing from AM to FM or vice versa.

Hopefully this will help you to nurse it along for awhile. If you have to replace it, you can get some radios that are far superior for much less money from the aftermarket.

BTW, it looks like your holding my cat. Mine is named "Simon."

Good luck,
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  #9  
Old 04-27-2004, 09:00 AM
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wjm wjm is offline
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You can probably get a used replacement on EBAY pretty cheap.
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  #10  
Old 04-27-2004, 10:37 AM
LarryBible
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These things are so plagued with problems, I don't think that buying a used one would be a gamble. I believe part of the problem to be firmware related, in other words software bugs.

That said, if you could get one cheap enough, it might be worth the gamble.

My $0.02,
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  #11  
Old 04-29-2004, 12:49 AM
BenzGal
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Thanks Yall!

I think I will probally end up just replacing it. I'd really like to have a cd player anyways.

BTW... My cat's name is Baby.
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