router works fine but the led work light is super dim or flickers, doesn't really help.

Diagnosis

The flickering or dimming of the LED work light on the Ryobi ONE+ HP Compact Router (PSBCR01B) is typically caused by one of two failures: particulate infiltration or a cold solder joint on the LED driver board. Because this router is designed for high-speed material removal, fine sawdust—specifically from hardwoods or MDF—is sucked into the ventilation ports of the motor housing. This dust settles directly on the LED contacts, creating a resistive layer that drops the voltage, resulting in a dim output. In more severe cases, the vibration from the high-RPM motor causes the thin-gauge wiring connecting the LED to the main power rail to fray or loosen. Since the LED is wired in parallel with the motor circuitry, it doesn't affect the router's cutting performance, but it indicates a failing connection at the solder point. If the light flickers specifically when the motor is under load, it is a sign of voltage drop caused by a degraded battery cell or a loose internal connection that is reacting to the tool's vibration.

How to Fix It

Because the LED is integrated into the upper housing assembly and is not listed as a standalone replacement part, the official fix requires a housing swap. However, you can often restore the light by cleaning the internal contact points without a full teardown.

1. Disconnect the ONE+ HP battery immediately to prevent accidental activation.
2. Use a high-pressure canister of compressed air to blow out the ventilation slots located near the top of the motor housing. Focus specifically on the gaps surrounding the LED lens to clear out packed sawdust.
3. Remove the outer casing screws using a T15 Torx driver. Carefully lift the upper clamshell housing, being mindful of the trigger switch wires.
4. Locate the small LED PCB (Printed Circuit Board) attached to the inner wall of the housing.
5. Inspect the two thin wires leading from the board to the main power lead. If you see a loose wire, use a fine-tip soldering iron (approximately 30W) to re-flow the solder joint.
6. Use a cotton swab dipped in 90% Isopropyl Alcohol to clean the LED diode surface and the surrounding contacts to remove any conductive dust or resin.
7. Reassemble the housing, ensuring the wires are routed away from the motor's cooling fan to prevent future chafing.

If That Didn't Work

• Test with a High-Capacity Battery: Swap your current battery for a 4.0Ah or 6.0Ah ONE+ HP battery. If the light brightness returns, the issue is not the LED but a voltage sag in your original battery pack, which cannot maintain the required current for both the motor and the lighting circuit simultaneously.
• Check for Trigger Contact Wear: The LED is linked to the trigger mechanism. If the light flickers only when the trigger is partially depressed, the internal copper contact plate may be pitted or dirty. Clean the trigger contacts with a contact cleaner spray (like DeoxIT) to ensure a steady current flow.
• Bypass with an External Work Light: If the internal LED board has burned out (common if the tool was used in extremely damp conditions), the cost of replacing the entire housing assembly often exceeds the value of the tool. In this case, mounting a magnetic LED strip to the router's base or using a headlamp is the most efficient workaround.
• Inspect the Battery Terminals: Check the gold-plated terminals on the tool side of the battery interface. If there is carbon buildup or debris, the tool may receive enough power to spin the motor but not enough stable voltage to keep the LED from flickering. Clean these with a pencil eraser or fine sandpaper.

Heads Up

• Avoid using the router in extremely dusty environments without a vacuum attachment; sawdust buildup inside the housing is the primary killer of the electronics in the PSBCR01B.
• Never use a soldering iron on the housing while the battery is inserted, as a short circuit can permanently fry the motor controller.
• When reassembling the clamshell, ensure the trigger spring is seated correctly; if it is misaligned, the light may stay on even when the tool is off, draining your battery.
• Periodically blow out the motor vents with compressed air every 5-10 hours of use to prevent dust from reaching the LED circuitry.