Question about Sony CDX-M770 CD Player

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Tuner unit in my CDX-M770 is out of order. FM signal is fading out after 15 min in tuner unit TUX201 on pin no. 10 marked as "MPX". I have service manual, but it does not contain schema of unit TUX201 "TUNER UNIT". Could You send me schema of this unit and printed wiring boards as well as could you help me in solving this problem?

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Posted on Jan 02, 2017

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SOURCE: sony cdx ca650x has no audio output from tuner, CD is OK

Tuner might be defective , check to see if tuning voltage varies

Posted on Jun 11, 2009

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