RCA RP-190 45 Record changer disassembly

Introduction

This tutorial provides a step-by-step guide to disassembling the RCA RP-190 45 record changer for repair and maintenance. Whether you're looking to overhaul an old unit or just curious about its inner workings, these instructions will help you navigate the disassembly process effectively.

Step 1: Gather Necessary Tools

Before you begin, ensure you have the following tools on hand:

• Quarter-inch nut driver
• 1/16 inch Allen wrench
• Phillips head screwdriver (or a pocket screwdriver)

Step 2: Prepare for Disassembly

1. Flip the record changer upside down to access its components easily.
2. Begin by removing the motor:
   • Locate the three retaining clips holding the motor in place.
   • Remove the clips and washers carefully.
   • Note that the motor grommets may be disintegrated, so pry them out gently.

Step 3: Remove the Drive Wheel

1. Identify the D-shaped drive wheel connected to the motor.
2. Carefully detach the drive wheel to prevent damage, as it may be worn out.

Step 4: Take off the Switch

1. Use the quarter-inch nut driver to remove the screw holding the switch in place.
2. Set the switch aside for later reassembly.

Step 5: Remove the Slider

1. To detach the slider:
   • Hold down on the washer near the bottom of the turntable stem.
   • Remove the clip at the very bottom to prevent it from flying away.
2. Take note of the small tooth gear that helps in record dropping; look for the “S” marking, which indicates proper orientation during reassembly.
3. Use the Allen wrench to loosen the slider’s attachment.
4. Remove the two quarter-inch screws (one with a washer) and slide the slider out carefully.

Step 6: Inspect the Cam and Washer

1. Remove the cam and take note of a thin special washer underneath it.
2. Keep this washer safe, as it is important for reassembly.
3. Apply a glob of heavy grease under the washer during reassembly to ensure smooth operation.

Step 7: Clean the Ramp

1. Check the ramp that lifts the tonearm; clean it thoroughly.
2. Ensure it is free of gunk to allow for proper tonearm movement.

Step 8: Disconnect the Tonearm

1. Remove the tonearm by disconnecting the wires.
   • Don’t worry about unsoldering, as you will reuse the wire and redo connections later.
2. Note that this model has an old-style arm with a sideways mounted clamp.

Step 9: Remove the Arm Post

1. Unscrew the arm post, which is secured with a screw, e-ring, and a washer.
2. Keep the thick washer and thin washer in order as you remove them.

Step 10: Remove the Indexing Mechanism

1. Locate the last nut and the groove that the slider fits into.
2. Remove any springs and clips associated with the indexing mechanism.
3. Ensure you keep track of all parts for reassembly.

Conclusion

Congratulations, you've successfully disassembled the RCA RP-190 45 record changer! Make sure to clean all parts thoroughly and take care to apply grease where needed. When you're ready to reassemble, refer back to these steps to ensure everything is put back in its rightful place. Happy repairing!