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Audio Systems/Car DVD player causing AM not to work

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Question
I have Toyota Sienna 04, when I bought it the dealer used a third party to put dvd player. Recently I found out that none of the AM stations are coming ..I never used to listen AM station before but now my 4 yr old daughter want to hear disney AM 600. The dealer told me some AM/FM modulator is defective and not working the way it supposed to work and it is causing it.Now since my van is more then 4 yr old it is not covered under warranty. I do have extended warranty on my van for 5 yrs. And I asked him if it is defective and I happen to notice it after 4 yrs, this is something he should replace it under extended warranty. But he is not considering it. what should I do? Any advice?

Answer
Without knowing the system (equipment installed, make and model and connection topology) I can only give you some generic comments.

Probably an after market third party system would not fall under the car warranty or extended warranty. Most 3rd party aftermarket stuff is only a 30 or 90 day warranty.

There should not be a modulator in this vehicle; but a receiver or "demodulator" maybe.  But, if it is defective it can be replaced.

A car dealer is about the last place to get information on this kind of problem - unless they happen to have a radio expert on staff - which not very many do.

You should go to an installer/repair place - and one that handles the brand of equipment installed in the Sienna - for a diagnosis.  I doubt if this is a very expensive repair. Probably under $100 at a place that works on thise kinds of problems.

Good Luck,
C  

Audio Systems

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Cleggsan

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Audio Design Engineer; systems, loudspeakers, cd/dvd players, etc. I am knowledgeable in all high end audio equipment and installations. MAKE SURE YOU GIVE A MAKE AND MODEL NUMBER AND CAR IF IT IS AN AUTO QUESTION. Note: I am getting some who ask good questions that take a lot of time to research but then the questioner fails to read the answer. Please don't ask questions unless you are seriously looking for an answer. If you find an answer to your question otherwise then let me know with your reply. Thank you.

Experience

Have been associated with audio design, standards, testing and component systems for over 40 years.

Organizations
Life Fellow Member of Audio Engineering Society Life Senior Member of Institute of Electronic and Electrical Engineers

Publications
Review technical manuscripts for IEEE Spectrum Write occasionally for high-end audio publications

Education/Credentials
BSEE/MSCS/MBA

Past/Present Clients
Past Employee/advisor to several well known audio products manufacturers

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