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I know this is an old post, but I have the same issue as Timosoren. 2009 with no diode in D1, so I went ahead and added one...
I didn't find any cold joints or any other issues with the board, but when I plug it in without the housing, I can make LED's D3 and D4 flicker. I put it all back together and still have a dim D3 LED but after a couple days the clock still has the correct time.
Not sure if it was the taking it apart or adding the diode that fixed it.
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It could've been a combination of either, to be honest. Those modules are simply a flawed design, they literally "bake" in the sun over time and it plays hell with their circuits.
Mine *knocks on wood* has been fine since I changed it over two years ago, but I've used a sun shade ever since I got the car. This new module hasn't been exposed to nearly as much direct sun as the old one most likely was. What I still find odd is that the factory module died after 6 months. lol
Most usually end up with a broken solder joint because of the constant micro expanding and contracting from temperature change, the diode most likely fixed it for you in your case. :D
:vtec:
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Well, nice while it lasted.... It was on a random time when I drove it today.
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I am new here as just got car for a work car and put new clutch and battery in it. Once done i noticed the clock going to 1:00 after every key cycle. Also my radio is completly dead. Nothing. I don't care much about the clock, but want to get radio working again. Any one have ideas? Not any fuses as check them all. Thanks
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Did you make sure you have power at the fuses? The AUX button on my radio doesn't do anything, I think the electronics in these cars are just sub par. Hope GM made the ECU...
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Do you know if you had a radio before? if so it sounds like the memory circuit. There is a fuse for that, check power to it.
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Had the same problem with the clock. Fixed it by tightening the battery clamps as they were loose.
Heat and cold played a big role as metals expand and contract, resulting in my car loosing power.