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Old 12-01-2007, 09:07 AM   #1
motiv8rnc
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Arrow Bose Radio Question....HELP

when i get up in the morning and start my car to go to work i turn on my radio, after about ten minutes of listening to it the sound shuts off. my head unit still has power it shows what station i am listening to. then about ten minutes later it will come back on out of nowhere. then ten minutes later shut off again... soo i called a corvette shop here in town and they say well your receiver may be bad... soo today i put a CD in the headunit listen to it and it does the same thing after about ten minutes..... if my receiver was bad wouldnt that only effect the TUNER, not the CD Player? what are some other options i can try to see if anything work.... someone had said the heat sensor in the headunit may be bad and its shutting itself out, if soo how do you fix a heat sensor in the headunit? can a electronics place do that work?.... anyone with ideas please help.....
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Old 12-01-2007, 09:17 AM   #2
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Are you still using the factory unit or do you have an afterfactory unit installed? I had a none factory unit installed on my '87 and it was doing the same thing you mention, and finally it quit all together. I had checked the BOSE "cross over/link system"...or whatever it's called, and that was not it. I had some guy tell me they thought it was my factory AMP that was causing the issues, and one guy told me it was my driver door speaker (as it was the only one of the speakers that was actually "shorting out" while all the others were working. I bought a new Bose door speaker with a built in AMP, but I sold my '87 before I had it installed...so I don't know it that was it or not.

My suggestion is check your factory AMP. Unfortunatly I don't know where or how to get to this, so I won't be much help there...BUT it gives you more to look for and trouble shoot at.

Hope that helps!

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Old 12-01-2007, 12:27 PM   #3
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I hope I'm not leading you astray, as I see you have a '91. But in the earlier C4's there's a Bose Amplifier Relay that switches all the amp's on and off. I could see this relay overheating or having a weak coil and disconnecting, then resetting when it cools off or gets jarred. I had one go out on my '86. Everything seemed to work, but no sound. It was a TOTAL PITA to replace, but IIRC, only $12.00.
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Old 12-01-2007, 12:32 PM   #4
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It is called thermal overload protection. Somewhere in your system something is getting to hot and shutting the outputs off. Stereo should have power and cd should work but not have any sound. Kinda something like this?
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keep um rubber side down shiny side up
Old 12-01-2007, 12:41 PM   #5
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Quote:
Originally Posted by merdman View Post
It is called thermal overload protection. Somewhere in your system something is getting to hot and shutting the outputs off. Stereo should have power and cd should work but not have any sound. Kinda something like this?
Interesting...I ALWAYS wondered what the deal was with my '87. How would you go about fixing that problem? Not that I have to worry about it anymore, but I actually drove my Vette for about three years with NO radio! I got use to it, and enjoyed listening to my exhaust note. Every once in a while I'd hear a crackling and popping in my speakers and when I'd hear that I knew I could turn on the radio and listen to it, but it usually didn't last long.

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Old 12-01-2007, 01:04 PM   #6
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Originally Posted by any4xx View Post
I hope I'm not leading you astray, as I see you have a '91. But in the earlier C4's there's a Bose Amplifier Relay that switches all the amp's on and off. I could see this relay overheating or having a weak coil and disconnecting, then resetting when it cools off or gets jarred. I had one go out on my '86. Everything seemed to work, but no sound. It was a TOTAL PITA to replace, but IIRC, only $12.00.
Bose amp relay is suspect #1
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Old 12-01-2007, 10:00 PM   #7
motiv8rnc
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where can i find that relay for 12.00? and that is under my glove box where all my radio wire head to? if im thinking of the right spot... i dont care about a pain in the A** getting to. i just want my radio back.....
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Old 12-02-2007, 02:01 AM   #8
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Quote:
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that is under my glove box where all my radio wire head to? if im thinking of the right spot... i dont care about a pain in the A** getting to. i just want my radio back.....
No, the Bose Amplifier Relay is under the Driver side dash toward the trans tunnel. Should be two relays there, outboard of the Turn Flasher. Amplifier Relay is the inboard relay, closest to the Flasher.
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Old 12-03-2007, 08:23 AM   #9
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Do you have the Bose Gold Series head unit? If it's not your amp relay, it's that damned CDM (tuner module) located under the passenger side dash. Good luck gettin' that mofo out.

You damned near have to be a midget contortionist to wrestle it out and forget about gettting it re-installed all neat and purdy like it came O.E.M.

Obviously, the assembly line cat put it in before it was bolted in place under the dash. I rank it ALMOST as big a PITA as the dreaded C-4 heater core removal.
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Old 12-07-2007, 07:58 AM   #10
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Quote:
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Do you have the Bose Gold Series head unit? If it's not your amp relay, it's that damned CDM (tuner module) located under the passenger side dash. Good luck gettin' that mofo out.

You damned near have to be a midget contortionist to wrestle it out and forget about gettting it re-installed all neat and purdy like it came O.E.M.

Obviously, the assembly line cat put it in before it was bolted in place under the dash. I rank it ALMOST as big a PITA as the dreaded C-4 heater core removal.
i have a extra one,(RECIEVER) won`t work on my 94.mines behind pas seat,
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Old 12-07-2007, 08:31 AM   #11
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i have a extra one,(RECIEVER) won`t work on my 94.mines behind pas seat,
Yeah, the engineers thankfully changed the location in 1994 through '96.
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Old 12-07-2007, 09:05 AM   #12
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Yeah, the engineers thankfully changed the location in 1994 through '96.
still a pain to get back in,,
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