Hi everyone. I'm having trouble with my bluetooth hands free telephone unit in my car (Honda Accord 2006)
It has been unplugged for quite a while now, because it has started to drain my battery quite badly.
I haven't measured it yet, but this seems to be a pretty common problem with this module after around 6-8 years.
Mine failed after about 9-10 years, but still failed. When disconnecting it, I recocnised that the module was pretty hot, although the car was not turned on and the module should thus not be turned on either. I found several other honda owners with the same problem (Accords, Civics, CR-Vs... - production date between 2003 and 2008). All the modules look roughly the same, despite of different mounting points of the case.
In one video on youtube the module hat a constant current of 0.21A ( )
Some people seemed to have had success repairing this module by reflowing the whole thing.
My problem is, that I don't have any possibilities to reflow.
I'm not completely sure which component causes the problem. When I remember correctly the top cover of the module was hot when I unplugged it. So I assume the current was drawn by the smaller PCB which is mounted on top. This also seems to the one where the processor is mounted.
I hope I can find some help here, but like I already found out that this is THE place to look for professionals.
I added some pictures and as I am new here I hope that I'll get some advice on what to check.
Are there any components likely to fail after a certain time of heating up and cooling down? Is it more likely a bad solder joint due to heating up and cooling down, or vibration from driving around?
I'd be very happy about any kind of advice.
Thanks in advance,
Marko