Volvo Owners Club Forum - Stereo/DVD:

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- - Stereo/DVD: high pitch sound (https://www.volvoforums.org.uk/showthread.php?t=72539)

Donald Town

May 16th, 2009 15:29

high pitch sound

i have a high pitch ringing sound only when the stereo is in Pro Logic mode (2004 C70). The dealer replaced the amp and radio and it is still there. he thinks it could be a pinched wire. i think it could be some sort of high pitched interference. any ideas?

Georgey dee

May 16th, 2009 21:12

Could be that the alternater is on the way out filling the DC system with AC

Marcel

May 18th, 2009 10:25

From memory there should be a supression capacitor fitted (on alternator)
your dealer or specialist will be able to confirm that.

alternatively you can fit a supression capacitor on the ignition feed to the radio.

regards
Marcel
CENTRAL SERVICES (IPSWICH)
188 SPRING ROAD
IPSWICH
SUFFOLK
IP45NR
01473 725953

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