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Car jumpstarted, now radio isn't working

Help, Advice, Owners' Discussion and DIY Tutorials on the Volvo S80 model. Sometimes called an "executive car", the S80 was and continues to be Volvo's top-of-the-line passenger car.
usinjin
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usinjin

Car jumpstarted, now radio isn't working

Post by usinjin » Sun Jun 23, 2019 9:39 pm

Hello all,

I had a bad diode in my alternator that was draining the battery quickly when the car was off. I've replaced the alternator and battery, but now the radio isn't powering on. It's the HU-611 head unit. With the car on I already tested the harness, and it is getting 11.5V. The display reads nothing and pressing the power button does nothing either. I tried the "electronics reset" by locking and unlocking the car with the 5 times in a row in the driver's door already. Is it fried? Is there anything else I can try? Thanks.

EDIT: I'm not actually 100% sure it was the alternator issue that did anything. It was actually sitting outside of the car for a while even before the alternator died. It was kept in a warm dry place. Maybe it just needs to be replaced?



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RickHaleParker
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Re: Car jumpstarted, now radio isn't working

Post by RickHaleParker » Mon Jun 24, 2019 3:20 am

Looks like there are up to four fuses for the Audio system, 11C/15 -17 & 11D/10.

11C fuses are at the end of the dash. 11D fuses are Cargo compartment, most likely for wagons.
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Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
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1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

usinjin
Posts: 2
Joined: Mon Sep 28, 2015 7:26 pm
Year and Model: S80 2002
Location: Texas
Has thanked: 0
Been thanked: 0
United States of America
usinjin

Re: Car jumpstarted, now radio isn't working

Post by usinjin » Mon Jun 24, 2019 6:11 pm

Awesome, thanks for the info! 11C/15 was indeed blown. After replacing it I have headunit power...though no audio. The other fuses (including the trunk one) were fine. I will continue to check around. Any further guesses as to the new culprit?



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