Question about Dual XDMR-7700 CD Player
I can no longer view the clock or radio station display.
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Posted on Jan 02, 2017
There are two 3mm white LEDs inside the face-plate that need to be replaced. Remove the face-plate and turn it over. Remove the 4 screws in the corners. Un-snap the plastic back off the face-plate. This exposes the back of the printed circuit board. Pull the volume knob off the front of the face-plate. You may need to use a small screw driver to gently pry it up. Flip the face-plate back over and remove the one screw that's holding the printed circuit board in. Separate the printed circuit from the front of the face-plate. Be careful to not lose the spring for the push pin. Flip the printed circuit board over and you'll see a raised metal box surrounding the display. The one end of this metal box is covered in black tape. Remove this tape to revel a small cavity in the side of the metal box with two 3mm white LED in it. These are the 2 LEDs that need to be replaced. This cavity is so small there's not much working room. Note that the positive terminal for each of these LED is on the left and the negative terminal is on the right. Rather than un-soldering the old LEDs I found it easier to use a small pair of diagonal cutters to just cut their leads and then pull them out of the cavity. Leave enough of the old leads sticking up to solder the new LEDs to. Trim the leads of the new LEDs to the proper length, slide them into the cavity one at a time and solder their leads to the stubs of the old leads. Make sure you get the polarity correct. Put everything back together and you should be good to go. I hope this helps you out.
Posted on Jan 15, 2011
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