The frequency response of a portable CD player is inhibited by design so that the volume in the headphones is not too loud. "Tweak" (modify) the portable CD player so that the muting effect is no longer functioning. A partial disassembly of the player is needed, as are a few tools found in most households. You do not need to have any electrical skills to tweak the portable CD player, but any warranty that is in place will be voided by your actions.
Instructions
1. Remove any CD from inside the portable CD player. Remove the rechargeable battery, if there is one, or the disposable batteries from the battery compartment; a screw may need to be removed from the battery compartment lid first, using a Phillips jeweler's screwdriver.
2. Place the portable CD player face down on a work surface. Remove the screws from the bottom of the player with the Phillips jeweler's screwdriver. Grip any rubber feet or plastic tabs on the bottom with the jaws of a needle-nose pliers. Pull any rubber feet or plastic tabs off the bottom of the player. Remove any screws from beneath the rubber feet or plastic tabs with the Phillips jeweler's screwdriver.
3. Turn the player over. Pull the outer case off the bottom of the player with your fingers. Place the outer case aside. Blow off the electronics on the bottom case with bursts of compressed air.
4. Locate the copper-colored module inside the bottom of the player. Trace the wiring going from the module to the RCA headphone jack, so you can locate the resistors that are labeled as follows: QN05, QN06, QN07 and QN08.
5. Cut off the pins on each side of the resistors with a wire cutters; cutting close to the resistor lessens the chances of scratching the circuit board during the procedure. Push each of the cut ends of the pins upward to further separate them from the circuit board. Blow off the resistors and the circuit board with bursts of compressed air.
6. Place the outer case back on the bottom of the player. Turn the player over and reattach the screws. Return the battery or batteries to the battery compartment, close the lid and reattach a screw if there was one. Dab the glue from a glue stick over the spots on the bottom where the rubber feet and/or plastic tabs originally were. Return any rubber feet and/or plastic tabs to their original position on the bottom of the player. Press down on them with your fingers to adhere them to the glue. Let the glue set for 10 minutes before turning the portable CD player right side up.
Tags: bottom player, portable player, feet plastic, feet plastic tabs, plastic tabs, rubber feet
