Hi! I have i W221 S320 2006 model. Around 6 months ago my sound and radio channels disappeared. After some reading in here i found out that it must have been the Harman/Kardon amplifier in the trunk.
I tried some basic fault search without luck, and found information about a company called Softelectronics that could repair these. Sent it to them, but got it in return with this answer: "Our technicians informed me that vital components have burned out and the PCB is beyond any repair."
Therefore i bought a refurbished one for 800 euro from Beckerautosound on eBay. Mounting the amplifier and its still not working. After contacting the seller i get this answer: "All units are repaired and tested before shipment. Yours was also put back on the bench before shipping to code it for use in Europe."
So now im sitting here with 2 amps and twice as confused. One company says the original is defective and when i buy another it still doesnt work. What is even more confusing is that the one i bought suddenly worked 1 time, but only one time. It has been sitting in the car in around 3 weeks.
Any clues or similar experiences? I have tried some most bypassing in the trunk, without luck.
I tried some basic fault search without luck, and found information about a company called Softelectronics that could repair these. Sent it to them, but got it in return with this answer: "Our technicians informed me that vital components have burned out and the PCB is beyond any repair."
Therefore i bought a refurbished one for 800 euro from Beckerautosound on eBay. Mounting the amplifier and its still not working. After contacting the seller i get this answer: "All units are repaired and tested before shipment. Yours was also put back on the bench before shipping to code it for use in Europe."
So now im sitting here with 2 amps and twice as confused. One company says the original is defective and when i buy another it still doesnt work. What is even more confusing is that the one i bought suddenly worked 1 time, but only one time. It has been sitting in the car in around 3 weeks.
Any clues or similar experiences? I have tried some most bypassing in the trunk, without luck.