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Old 08-02-2016, 03:38 PM   #1
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Default '92 Riviera Speaker Problem

Recently my '92 Riv has developed a problem in the right rear speaker.
The speaker just makes static noises but no audio.
I have removed the speaker from the rear deck and checked it for blown voice coil, broken connection and impedance. Everything checks out.
Connected it to the speaker output on the left side and the speaker sounds fine.
Has anyone encountered a similar problem with the rear speakers on a '92 Riv?
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Old 08-03-2016, 04:55 AM   #2
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Sounds like the head units right channel is blown.
You could try to find a cheap head unit from a salvage yard, unless you are using an aftermarket one.

This can help you search is you are looking for a old factory deck.

Car-Part.com--Used Auto Parts Market
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Old 08-03-2016, 11:16 AM   #3
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I think you're right. It'* an OEM radio.
I pulled the radio and verified continuity between the dash and rear speaker wiring and it checked OK. Now the front right door speaker is out. Checked the pin-outs on the radio for the rear speakers and they're good.
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Old 08-03-2016, 02:25 PM   #4
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I am not sure if yours will have a lock on it if you get one from a scrap yard, but if it does this may work to unlock it.

If your display on your stock Declo electronics radio is reading "LOC" This means Theftlock has activated.

This happens if your battery is drained, or disconnected. In order to fix this just do the following.

1) Go to your radio, hold down presets 2 and 3 for around 5-10 seconds, write down the 3 digit code that comes up.

2) Hit the AM-FM button within 15 seconds of the first step, another 3 didgit code will pop up, also write this one down. (If you mess up just start over)

3) Now that you have this 6 digit code, call 1-800-537-5140 (Have a pen ready to write down your unlock code)

4) When the recording begins press 106010 then *

5) The recording will then ask for your 6 digit code, enter your code followed by *

6) It will give you a 4 digit unlock code. (Write this down!)

7) Go back to your radio.

8- Press the MN button (Located under your display)

9) 000 will come up.

10) Press HR (to the left of the MN button) to make the fist two digits change.

11) Press MN to change the second two digits.

12) Use steps 10 and 11 to make your display agree with the code you were given by the recording. Hit the AM-FM button.

13) Your radio will now no longer read "LOC" but will be fully functional.
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Old 08-08-2016, 06:44 PM   #5
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head unit
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