Introduction

In this teardown we will deconstruct an RCA Radio Alarm Clock and take a look at its internal components. This teardown is nonviolent and can be used as a disassembly guide.

This teardown is not a repair guide. To repair your RCA RP3715A, use our service manual.

The RCA RP3715A Radio Alarm Clock Features: Wide digital display with green numbers, two alarm settings, an AM/FM radio, tuner dial, volume dial, voice reading, and auto dimmer. Control Buttons Include: ON/OFF, WAKE 1, CANCEL, WAKE 2, REV, FWD, NAP, SLEEP, and SNOOZE.
  • The RCA RP3715A Radio Alarm Clock

  • Features: Wide digital display with green numbers, two alarm settings, an AM/FM radio, tuner dial, volume dial, voice reading, and auto dimmer.

  • Control Buttons Include: ON/OFF, WAKE 1, CANCEL, WAKE 2, REV, FWD, NAP, SLEEP, and SNOOZE.

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Prepare the Clock for Teardown: Unplug the clock.
  • Prepare the Clock for Teardown:

  • Unplug the clock.

  • Remove the battery: On the back of the clock, press down on the top tab of the clear plastic battery compartment door and pull out. Disconnect the battery by pulling it off the leads. Set the battery aside.

  • Note: As in our case, there may not be a battery. A battery is only needed if the clock is used without being plugged in.

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Remove the Screws on the Back Panel: Lay the clock on its face. There are six screws total. Each is marked with a small arrow on the grey back panel:
  • Remove the Screws on the Back Panel:

  • Lay the clock on its face.

  • There are six screws total. Each is marked with a small arrow on the grey back panel:

  • One is inside the battery compartment.

  • Three are on the back panel around the speaker.

  • Two are at the base of the clock, on the lower left and right edges of panel (these two have longer screws).

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Remove the Power Cable Strain Relief: Remove the screw and metal bracket lying over the power cord on the base of the clock. Gently pull the power cord out of the slot.
  • Remove the Power Cable Strain Relief:

  • Remove the screw and metal bracket lying over the power cord on the base of the clock.

  • Gently pull the power cord out of the slot.

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Release the Top Panel and Control Buttons: Still on the underside of the clock, press the two plastic release tabs at the seam between the front and back panels. Note: You may need the help of a flathead screwdriver if you can’t release the tabs with your fingers.
  • Release the Top Panel and Control Buttons:

  • Still on the underside of the clock, press the two plastic release tabs at the seam between the front and back panels.

  • Note: You may need the help of a flathead screwdriver if you can’t release the tabs with your fingers.

  • If you feel a snag, check the following seven internal release tabs. Generally, these are not an issue and the clock will easily pop apart releasing the top panel. If this is not the case, you can use a flathead screwdriver to release any stubborn tabs. The seven internal tabs are located:

  • Two are directly above and below the CANCEL button on the top panel.

  • Two are directly above and below the FWD button on the top panel.

  • Two are directly above and below the AM/FM switch on the side of the clock.

  • One is between the TUNING and VOLUME dial on the other side of the clock.

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Remove the Top Panel and Control Buttons: Situate the clock upright. Slide the top panel out from the release tabs and lift it off the clock.
  • Remove the Top Panel and Control Buttons:

  • Situate the clock upright.

  • Slide the top panel out from the release tabs and lift it off the clock.

  • Note: The SNOOZE and ON/OFF buttons are not connected to the top panel and may fall out.

  • Remove the grey plastic switch cover from the WAKE1/WAKE2 Switch on the top logic board.

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Separate the Back Panel: Lay the clock on its face and gently lift off the back panel. Pull the battery leads through the hole in the back of the battery compartment.
  • Separate the Back Panel:

  • Lay the clock on its face and gently lift off the back panel.

  • Pull the battery leads through the hole in the back of the battery compartment.

  • Note: Be gentle! The unit will not come all the way apart because the speaker is still attaching the back panel to the clock’s main logic board.

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Remove the AM/FM Switch Button: Slide off the grey plastic AM/FM switch button on the left side of the clock. It should be loose and practically fall out.
  • Remove the AM/FM Switch Button:

  • Slide off the grey plastic AM/FM switch button on the left side of the clock. It should be loose and practically fall out.

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Remove the Speaker: Remove the two screws and metal brackets holding the speaker to the back panel. Using a flathead screwdriver, gently pry the speaker off the back panel.
  • Remove the Speaker:

  • Remove the two screws and metal brackets holding the speaker to the back panel.

  • Using a flathead screwdriver, gently pry the speaker off the back panel.

  • Note: The speaker is lightly glued in place.

  • The back panel is now free.

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Remove the Bezel Panel and Display Window: Remove the two screws holding the front bezel panel in place. Note: These screws are located at the inside top corners of the front grey bezel panel.
  • Remove the Bezel Panel and Display Window:

  • Remove the two screws holding the front bezel panel in place.

  • Note: These screws are located at the inside top corners of the front grey bezel panel.

  • Gently remove the front grey bezel panel and separate the clear plastic display window.

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Remove the Ten Screws on the Logic Boards: Place the clock on its base. Remove the five screws on the top logic board.
  • Remove the Ten Screws on the Logic Boards:

  • Place the clock on its base.

  • Remove the five screws on the top logic board.

  • Flip the clock onto its face.

  • Remove the five screws on the main logic board.

  • Note: One of the screws on the main logic board is hidden on the outside of the power supply, as illustrated with the purple box.

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Remove the Tuning Dial: Place the clock on its face. Unscrew the black tuning dial located just below the main logic board and remove it.
  • Remove the Tuning Dial:

  • Place the clock on its face.

  • Unscrew the black tuning dial located just below the main logic board and remove it.

  • Note: You will need to gently lift the logic board next to the black tuning dial to get it out.

  • This frees the grey tuner wheel beneath it so that the main logic board can come out.

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Free the Power Supply/Transformer: Release the black tab on the left of the power supply. Gently lift the power supply out and away from the black casing.
  • Free the Power Supply/Transformer:

  • Release the black tab on the left of the power supply.

  • Gently lift the power supply out and away from the black casing.

  • Rest the power supply, still attached, outside the clock casing.

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Remove the Tinted Digital Display Window: The tinted display window is held in place by tabs on the back of the tinted display window.  Two tabs are located at the top and one tab is on the bottom as illustrated. Release the two top tabs and pull the tined display window away from the casing.
  • Remove the Tinted Digital Display Window:

  • The tinted display window is held in place by tabs on the back of the tinted display window. Two tabs are located at the top and one tab is on the bottom as illustrated.

  • Release the two top tabs and pull the tined display window away from the casing.

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Peel the Digital Display and Top Logic Board off the Casing: Release the bottom tab on the digital display. Lift the display off the four plastic pins at its corners.
  • Peel the Digital Display and Top Logic Board off the Casing:

  • Release the bottom tab on the digital display.

  • Lift the display off the four plastic pins at its corners.

  • Peel the digital display off the casing.

  • Continue peeling the top logic board off the casing.

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Separate the Digital Display and Logic Boards from the Casing: With the digital display and top logic board loose, place the casing face down with the main logic board facing up. Release the two tabs holding the main logic board on the back casing. These tabs are located on the upper right and lower left corners of the casing.
  • Separate the Digital Display and Logic Boards from the Casing:

  • With the digital display and top logic board loose, place the casing face down with the main logic board facing up.

  • Release the two tabs holding the main logic board on the back casing. These tabs are located on the upper right and lower left corners of the casing.

  • Gently remove the main logic board from the casing.

  • Be Careful! The battery leads may get caught on the casing. You will need to help feed them through the circular hole on the casing.

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Remove the Tuner Wheel: Unscrew and remove the grey tuner wheel from the back side of the main logic board.
  • Remove the Tuner Wheel:

  • Unscrew and remove the grey tuner wheel from the back side of the main logic board.

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The Clock Deconstructed
  • The Clock Deconstructed

  • This is as far as the clock can be deconstructed without cutting wires or requiring soldering to reassemble.

  • Here is the entire clock deconstructed.

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Mini-Tour of the Main Logic Board The main logic board hosts the radio components of the clock.
  • Mini-Tour of the Main Logic Board

  • The main logic board hosts the radio components of the clock.

  • Internal Antenna

  • Tuning Screws

  • Inductor Coils

  • Power Supply/Transformer

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Mini-Tour of the Top Logic Board The top logic board hosts the clock and control components.
  • Mini-Tour of the Top Logic Board

  • The top logic board hosts the clock and control components.

  • Clock Crystal

  • Control Buttons

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Brittany McCrigler

Member since: 01/16/2012

5,323 Reputation

1 Guide authored

One Comment

Thanks so much for posting this tear down. I love this clock, but one of the alarm buttons went out and I wasn't sure how to fix it. This showed me all the information I needed even though it wasn't specifically about that issue. Now I can use both alarms again!

stephenstrange - Reply

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