188 W · 118 V · 80 Hz Motor — What Part Fixes This Problem and How to Repair It

Understanding the Problem

Brief explanation: The string "188 W - 118 V - 80 Hz" reads like a motor or electrical device rating: 188 watts power, 118 volts supply rating, and 80 Hz operating frequency. This is an unusual frequency for household appliances (60 Hz in North America, 50 Hz in many other regions), so verify the label carefully — it may be a motor from a specialist piece of equipment or a lab/test unit. Problems with a motor that carries this rating usually show as failure to start, weak torque, overheating, loud noise, or burning smell. Step-by-step diagnostic and repair steps: 1) Verify the label and application: locate the motor nameplate on the appliance and confirm the values. If frequency is 80 Hz on the label, treat the motor as manufacturer-specified and match replacements exactly. If the label is unclear, photograph it and check the appliance manual or manufacturer's parts list. 2) Visual and mechanical inspection: a) Unplug the appliance or switch off the circuit breaker. b) Inspect wiring, connectors, and terminals for burn marks, loose wires, or melted insulation. c) Spin the motor shaft by hand (with power off). Feel for roughness, grinding, or stiffness that indicates bad bearings. d) Check brushes (if a brushed motor) for wear and the commutator for heavy pitting or burning. 3) Electrical continuity checks (requires a multimeter): a) Measure DC resistance across the motor winding leads. You should see continuity; open circuit indicates a broken winding. b) Measure resistance from each winding lead to motor frame (insulation check). A low resistance (near zero) indicates winding-to-ground short. For safety, do this after disconnection and with capacitors discharged. 4) Current and running tests: a) If the motor can be safely powered, measure full-load running current. Estimate expected running current ≈ Power/Voltage = 188W/118V ≈ 1.6 A (this is a rough guide; locked-rotor current is much higher). Excessive current indicates mechanical binding or shorted turns. b) Listen for unusual sounds and note overheating during short run tests. 5) Capacitor check (if motor uses start or run capacitor): a) Visually inspect the capacitor for bulging or leaks. b) Discharge and test capacitance with a meter — replace if out of spec or if motor has starting issues. 6) Brush and commutator service (for brushed motors): a) Remove brush caps, inspect brush length and spring tension. Replace brushes if worn to below manufacturer minimum. b) Clean or lightly dress the commutator; replace if deeply scored. 7) Bearing replacement (if noisy or stiff): a) Remove rotor and press out bearings; replace with the exact bearing size. b) Reassemble with correct clearance and lubrication if required. 8) Replace the motor or component: a) If windings are shorted or burned, or mechanical damage is severe, replace the entire motor with an exact OEM or an approved equivalent matching wattage, voltage, frequency, mounting, and shaft dimensions. b) If only brushes, capacitor, or bearings are bad, replace those parts and retest. 9) Reassembly and test: a) Reconnect wiring exactly as removed. Verify secure connections and strain relief. b) Restore power and run the appliance through a short test cycle while monitoring current, temperature, and vibrations. How to fix (practical highlights): - Replace worn brushes with the correct brush kit, re-seat or true the commutator, and clean carbon dust. - Replace a failed start/run capacitor with one of identical capacitance and voltage rating. - Replace bearings using a bench press or bearing puller; press new bearings on squarely and lubricate as recommended. - Replace the motor: match wattage (188W), voltage (118V), frequency (80Hz if on nameplate), housing/mounting, shaft diameter/length, and electrical connectors. Safety note: always disconnect power before working on electrical appliances. Discharge capacitors before testing or touching. If you’re not comfortable with motor winding tests, high current measurements, or mechanical disassembly, consult a qualified appliance technician.

Common Symptoms

Motor won't start or struggles to start, motor hums but doesn't spin, weak power/low torque, loud grinding or squealing, burning smell or smoke, intermittent operation.

Common Causes

• Worn brushes or damaged commutator (brushed motor)
• Bad or weak start/run capacitor
• Worn or seized bearings causing mechanical binding
• Shorted or open motor windings
• Loose wiring or burnt terminals, or incorrect supply frequency/voltage

Popular Parts That Fix This Problem

These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at ProsourceParts.com — just search by your appliance model number for a guaranteed fit.

Frequently Asked Questions