DeWalt DWE4011 4-1/2” (115mm) Angle Grinder.

The grinder operates but produces excessive internal arcing or sparking, indicating potential brush wear, commutator damage, or armature issues.

The stated fault does not map to a single common repair part, so treat this as a parts or board-level unit and confirm the real cost before buying. The common failure points for this kind of item are below for reference. Subtract the relevant one from the $64 margin to gauge the real spread.

Common faults for this model

• Dead battery pack$25 to $60eBayAmazon
• Charger / charging (battery or charger)$20 to $60eBayAmazon
• Trigger / switch (won't power on)$10 to $25eBayAmazon
• Chuck$15 to $35eBayAmazon
• Blade clamp / holder$10 to $30eBayAmazon
• Hammer / clutch mechanism$20 to $60eBayAmazon
• Nail jam / driver blade (misfires)$15 to $50eBayAmazon
• Spindle lock / button$8 to $25eBayAmazon
• Shaft / housing$15 to $50eBayAmazon
• Motor brushes$8 to $20eBayAmazon
• Motor / armature$30 to $60eBayAmazon

Repair costs are rough parts estimates, not a diagnosis of this exact unit. Confirm the fault and your repair path before you buy.