Mdbm755a Parts

This electronic control board manages a range of appliance functions, restoring responsive cycle selection, timing and control logic for machines that have lost normal control operation. Replace a failed board to regain normal electronic control. What it does:

• Receives user inputs and runs the appliance's selected cycles and timing
• Controls power to motors, heaters and other components via relays and triacs
• Helps prevent improper operation when the board detects faults (may show error codes)
• Common symptom for replacement: unresponsive touchpad/control panel or no cycle start
• Other symptoms: erratic or incorrect cycle behavior, display errors, or appliance not powering on

• One electronic control board

• Disconnect power to the appliance before starting any repair
• Handle the board carefully and avoid touching circuit components to prevent ESD damage
• Reconnect all wiring harnesses and mounting hardware exactly as removed; ensure connectors are fully seated

This flexible injector hose routes liquid between the appliance's injector/dispenser and the pump or spray assembly, restoring proper dispensing and preventing leaks. It's a direct-replacement service part for affected injector connections. What it does

• Carries water or detergent solution from the injector/dispenser to the pump or spray assembly
• Restores normal dispensing when the original hose is cracked, split, or clogged
• Prevents leaks that can cause puddling or improper wash cycles
• Helps restore consistent flow so detergent and rinse/cleaning agents reach the tub

• One injector hose

• Disconnect power and shut off the water supply before starting
• Remove the old hose and reuse or replace any clamps or fittings as needed; install the new hose onto the same connection points
• After installation, restore power/water and run a short cycle to check for leaks and correct dispensing

This ball bearing helps support a rotating appliance assembly to reduce friction and enable smooth operation. Replacing a worn bearing restores quieter rotation and helps prevent further wear on adjoining parts. What it does:

• Supports and centers a rotating shaft or drum to maintain smooth movement
• Reduces friction between moving metal components for efficient operation
• Can cause squealing, grinding, rubbing or excessive vibration when worn
• Restoring the bearing can stop noise and improve rotation stability

• Disconnect power and follow before beginning any repair
• Use correct tools and replacement procedures to avoid damage to the bearing housing or shaft
• Inspect adjacent seals, shafts, and mounts when replacing the bearing and replace any damaged parts

Color: Dark Gray

This is a machine screw used to secure appliance panels and components where an 8-32 thread fastener is specified. It provides a reliable hold for control panels, brackets, and interior assemblies. What it does:

• Fastens panels, brackets, and small components to the appliance chassis
• Holds control assemblies and trim pieces in place
• Maintains secure connections that prevent vibration-related loosening
• Works where an 8-32 coarse-thread machine screw of short length is required

• One 8-32 x 3/8" machine screw

• Use the correct driver (Phillips or slotted) to avoid stripping the head
• Thread into metal or nut/insert; do not overtighten to prevent thread damage
• Disconnect power and remove any panels as required for safe access

Right hand side

This seal sits at the dishwasher's air/water inlet, creating a tight barrier where the inlet assembly meets the tub or door. Replacing a worn seal helps stop nuisance leaks and supports proper fill and venting performance. What it does

• Forms a watertight seal at the air/water inlet connection
• Helps prevent drips or seepage during fill and wash
• Supports correct venting to keep moisture contained inside the tub
• Common failure signs include water on the floor near the unit, dampness around the inlet/vent area, or a cracked, flattened, or brittle seal

• One air/water inlet seal

• Disconnect power and shut off water before servicing
• Access method varies by model; remove the inlet/vent cover or side panel to reach the seal
• Clean mating surfaces; seat the new seal evenly without distortion
• Reassemble and run a brief fill/wash to check for leaks

Color: light blue. Measures about 1 inch high by 4 inches deep.

Replacement pump gasket with silicone sealing material that restores a watertight seal between the pump and housing. Helps stop leaks at the pump area and prevents water pooling under the appliance.

• Seals the pump to the housing to help prevent water leaks and drips.
• Common repair for visible water under the appliance or leaks coming from the pump area.
• Silicone sealing material provides a flexible, water-tight interface that conforms to the pump housing.
• Designed to replace the factory pump gasket for a direct fit and proper sealing.

• Disconnect power and water supply before beginning any repair.
• Remove the pump assembly to access and replace the gasket.
• Clean and dry mating surfaces before installing the new gasket; seat evenly to ensure a full seal.

This control board housing secures and protects the washer's electronic control board, keeping circuitry stable and shielded from moisture and debris for reliable operation. It fits into the console area and supports proper control panel alignment. What it does:

• Holds and protects the electronic control board inside the console from impact, dust and moisture.
• Keeps the control board properly positioned for reliable electrical connections.
• Helps prevent control panel wobble or misalignment that can cause button or dial issues.
• Commonly replaced when housing is cracked, broken mounting tabs fail, or board access is needed.

• 1 control board housing

• Disconnect power and water to the appliance before beginning any repair.
• Handle the control board and housing carefully to avoid damage to connectors or circuit components.
• Use appropriate tools to remove console components; replace damaged mounting tabs and secure all fasteners.
• Discharge any capacitors and follow the board manufacturer's ESD/safety recommendations.

A filter guard that helps keep debris away from the wash pump and drain area, protecting the pump and improving drain performance. Simple replacement for worn or damaged filter housings. What it does:

• Covers and protects the dishwasher's lower filter area to help prevent large debris from entering the pump
• Helps reduce clogs and poor drain performance caused by food or loose items
• Maintains proper water flow through the filter assembly for more reliable operation
• Works as a replacement for a cracked, warped, or missing filter guard that leaks or allows debris through

• Disconnect power to the appliance before any service to avoid shock or injury
• Remove the lower rack and existing filter assembly to access the guard
• Inspect adjacent filter parts for wear; replace damaged components to ensure proper sealing
• Hand-tighten or seat parts as directed by the OEM; avoid forcing or overtightening plastic components