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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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high pitch soundViews : 566 Replies : 2Users Viewing This Thread : |
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May 16th, 2009, 16:29 | #1 |
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Last Online: May 16th, 2009 16:36
Join Date: May 2009
Location: auburndal fl
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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?
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May 16th, 2009, 22:12 | #2 |
Premier Member
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Could be that the alternater is on the way out filling the DC system with AC
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May 18th, 2009, 11:25 | #3 |
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Last Online: Jul 13th, 2017 12:44
Join Date: May 2007
Location: Ipswich
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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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