Bose Car audio no sound but base sound is
11-05-2021, 01:16 AM
#1
Rennlist Member
Thread Starter
Bose Car audio no sound but base sound is
I’ve read a couple of threads where the cars audio periodically stops and then will start after parked. Example, headed to Porsche service and wasn’t working except for subwoofer. Picked car up and it’s working. Started car next day, not working. Several threads mentioned same type of issue with Bose amplifier and replaced. A boot of PCM doesn’t stop issue. I see someone on eBay offers fixing Bose amp.
I see that there is two amps - ones called “radio amp” and looking at PET another ones “amplifier woofer”. Which is the amp for the speakers? Seems people have replaced the amp….just want to make sure which is the one that others have had problem with. Is the location under the passenger seat?
The car is in Porsche service for the spoiler assay replacement, yet another thread here, so I mize well replace the cranky amp if I can figure which one.
Ah the pleasures of buying a used Porsche.
I see that there is two amps - ones called “radio amp” and looking at PET another ones “amplifier woofer”. Which is the amp for the speakers? Seems people have replaced the amp….just want to make sure which is the one that others have had problem with. Is the location under the passenger seat?
The car is in Porsche service for the spoiler assay replacement, yet another thread here, so I mize well replace the cranky amp if I can figure which one.
Ah the pleasures of buying a used Porsche.
Last edited by cicsprog; 11-05-2021 at 01:20 AM.
11-05-2021, 01:41 PM
#2
RL Community Team
Rennlist Member
Rennlist Member
I assume it's not a CPO car, so you're doing the parts acquisition and labor?
11-05-2021, 04:52 PM
#4
Three Wheelin'
Not positive on the 991 but on the 997.2 the amp you are referring to is under the passenger seat. It's definitely a thermal issue and some people have had success opening it up and reapplying thermal grease to the power amp components (to improve heat dissipation). Others have replaced the the capacitors and reported it fixed the problem. There's also an outfit that will replace all the suspect components for you if you send the amp to them, quoted cost was $400. Check out this thread linked here, it's a long one but there's good technical info between comments 30 and 60 or so.
https://rennlist.com/forums/997-foru...stopped-3.html
My 997 just started doing the same thing at the end of Summer but since things cooled off it hasn't done it since. I'll try the thermal grease if it starts up again.
https://rennlist.com/forums/997-foru...stopped-3.html
My 997 just started doing the same thing at the end of Summer but since things cooled off it hasn't done it since. I'll try the thermal grease if it starts up again.
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asellus (11-06-2021)
11-06-2021, 12:31 PM
#5
Rennlist Member
Thread Starter
Not positive on the 991 but on the 997.2 the amp you are referring to is under the passenger seat. It's definitely a thermal issue and some people have had success opening it up and reapplying thermal grease to the power amp components (to improve heat dissipation). Others have replaced the the capacitors and reported it fixed the problem. There's also an outfit that will replace all the suspect components for you if you send the amp to them, quoted cost was $400. Check out this thread linked here, it's a long one but there's good technical info between comments 30 and 60 or so.
https://rennlist.com/forums/997-foru...stopped-3.html
My 997 just started doing the same thing at the end of Summer but since things cooled off it hasn't done it since. I'll try the thermal grease if it starts up again.
https://rennlist.com/forums/997-foru...stopped-3.html
My 997 just started doing the same thing at the end of Summer but since things cooled off it hasn't done it since. I'll try the thermal grease if it starts up again.