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The display on my radio went out. Is this fuse related or an internal problem in the radio

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  • vitotanasi Oct 07, 2009

    Imade a major mistake in my request........This problem is on my 2003 Grand Prix GT and not the Envoy Denali....All the dash lights function properly, dimmer and all. The radio functions properly memory and all. Just the display is out. I apologize for the wasted time and effort on you part!!

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There are many problems that could cause the display to go out.

Yes , a fuse would be the most common but other problems can include a disconnected display wire , a bad ignition / battery cable or even just a blown unit all together.

Does the unit still produce any sound?

Posted on Oct 07, 2009

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Do all of your dash lights work? Does it keep time and or radio stations in the memory? sometimes vehicles have a fuse that runs only that part of the radio if it is stock. The dimmer control could also be all the way down, if the dome light don't light bright, then that could be your problem, turn it the other way, it should be on the left side of the dash near the headlight control.
Or
The problem is with the display power supply board getting too hot and cracking the poorly solder joints.
You have two options if it's not under warranty. One, you can try to
re-solder the joints. Two, you can replace the board. I tried to
re-solder the board with no luck. I had to replace the board. I will
include information at the bottom of this posting on where to buy the
board. It took me a long time to find someone who sold the parts.
Here are the instructions to re-solder the board.
To try to re-solder the board....
MAKE SURE YOU HAVE A LOW WATT SOLDERING IRON AND SMALL SOLDER.
Instruction..
By opening up the radio you will find a narrow display power board
With in the left side of the radio (faceplate toward you). This board
has a metal cover soldered to it, with a toroid (wire wound doughnut)
inside on one side, and a bank of surface mount resistors and
capacitors on the bottom side. One end of the board (SCR heat sink) is screwed
to the heat sink at the back of the radio, the board is secured with 2
metal bend-tabs, and it has a white mini connector on the other end
which connects to the faceplate. Remove the board from the radio.
On the bottom of the board look for surface mount components
The colder these resistor/capacitor chipsets get, the brighter the display.
If you can't fix it with the re-solder posting, or don't
want to try it, you will need to replace the display power supply.
The board comes in a 3 board set, a new power
supply board and two new tuner type boards, sold as a "compound set".
The board is very easy to swap. Pull the radio out, take to 2 black
screws off the side of the face plate (1 on each side. Face the back
of the radio, now remove the screw in the top right corner. Pop the
front and top cover off the radio. Unplug the blue cable that leads
from the display to the display power supply. There are 2 tabs that
hold the power supply in. One is next to where the blue cable plugs
into the power supply. To find the other tab, look inside the half
circle on the tin heat shield. The board is painted white where the
tabs are. Now straighten the tabs with a screw driver. Pull straight
up on the tin heat shield. Now you have it out swap it with the new
one and put it all back together.
Hope you will be helpfull

Thanks for contacting Fixya.com

Posted on Oct 07, 2009

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