Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
Your device made by Jensen is supported by ASA Electronics, a division of AudioVox.
Their contact information is:
XXXXXbr/> Elkhart, IN 46514
Their technical support department contact information is athttp://www.asaelectronics.com/technical-support
Internal circuit diagrams (as opposed to external wiring diagrams) do not appear, after a search, to be available for this device model, except perhaps by applying directly to the ASA Electronics company as listed above.
Since another Expert here might be able to provide additional information, I have Opted Out of this case, opening it to other Experts' contributions at no extra charge to you.
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