--- title: "Microwave Control Board and Touchpad Repair" description: "Tracing a dead display, keys that do not answer or a code that keeps returning to the keypad, the ribbon, the relays or the main board, and replacing only the…" url: "https://microwaverepair.center/services/microwave-control-board-and-touchpad-repair/" --- # Microwave Control Board and Touchpad Repair Tracing a dead display, keys that do not answer or a code that keeps returning to the keypad, the ribbon, the relays or the main board, and replacing only the part that failed. ## What the microwave control board and touchpad repair involves. Every microwave cycle starts on the touchpad and the control board behind it. The keypad is a thin membrane with a ribbon cable that plugs into the board; the board reads the keys, drives the display, switches the relays that feed the magnetron, the fan, the lamp and the turntable, and reads the humidity sensor and the thermal cutouts. Steam, grease and heat rising from burners or from the cavity wear these parts slowly. A membrane that has lifted or cracked leaves some keys dead or makes the unit beep on its own; a ribbon with corroded contacts does the same. A board with a failed relay may show a perfect display and never start heating, and one with a failed power supply leaves the display dark though the outlet is live. Before a board is ordered, the technician rules out the simpler things that look the same: a control lock, a demo mode, a door switch the board is waiting for, a blown fuse, a sensor it will not trust. The keypad and ribbon are tested on a meter, and the board's supply and outputs are measured with the capacitor discharged. On built-in and speed models some boards are made to order, so the part and its wait are confirmed with you before it is ordered. How the visit goes ### What it usually costs Moderate to highest · Control board, keypad membrane or display A keypad membrane or its ribbon sits lower on the scale. A main board, especially one made for a single built-in or speed model and ordered from the maker, is among the costliest parts a microwave takes. ### Answers 5 problems Microwave Touchpad Ignores Key Presses Microwave Display Dark, Dim or Scrambled · Microwave Won't Turn On at All · What a Microwave Error Code Is Telling You · Microwave Shuts Off Before the Timer Ends ### Comes up most on Microwave hood combination Built-in microwave · Microwave drawer · Countertop microwave ### Codes that lead here ERROR · E-xx · E-11 · ERROR Bertazzoni ERROR: a sensor program or clock setting failed. ## Microwave control board and touchpad repair, step by step. Run every mode, clear any stored code, and show you each key and the display working before the cabinet is closed. 01 Look at the display and the keys, note any code, and rule out a control lock, a demo mode or a clock that is waiting to be set. 02 Check that the door switches and the fuse are sound, since a board waiting on a switch looks like a dead board. 03 Cut the power and discharge the capacitor, then test the keypad membrane and its ribbon, and the board's supply and relay outputs. 04 Replace the keypad, the ribbon or the board, ordered for the exact model, and reconnect every plug where it came from. 05 Run every mode, clear any stored code, and show you each key and the display working before the cabinet is closed. ## The problems it answers. 5 of them, from microwave touchpad ignores key presses to microwave shuts off before the timer ends. [All problems](https://microwaverepair.center/problems/) Most common ### Microwave Touchpad Ignores Key Presses 6 causes, cheapest first Before you call ### Tell us this when you book 1. What the display shows now: nothing, a frozen reading, missing segments, a code, or a lock symbol 2. Which keys fail, and whether the microwave beeps or starts on its own 3. Whether the unit sits above burners, in a steamy spot, or had a spill run into the keypad 4. Whether a power outage, a storm or a tripped breaker came just before it stopped It also answers - [**Microwave Display Dark, Dim or Scrambled** 6 causes](https://microwaverepair.center/problems/microwave-display-not-working/) - [**Microwave Won't Turn On at All** 6 causes](https://microwaverepair.center/problems/microwave-not-turning-on/) - [**What a Microwave Error Code Is Telling You** 7 causes](https://microwaverepair.center/problems/microwave-error-code/) - [**Microwave Shuts Off Before the Timer Ends** 6 causes](https://microwaverepair.center/problems/microwave-stops-mid-cycle/) ## Moderate to highest, on the site's scale. A keypad membrane or its ribbon sits lower on the scale. A main board, especially one made for a single built-in or speed model and ordered from the maker, is among the costliest parts a microwave takes. [Read the full cost guide](https://microwaverepair.center/cost/) | Repair | Relative cost | | --- | --- | | [Magnetron and waveguide cover](https://microwaverepair.center/services/microwave-magnetron-repair/) | | | [High-voltage diode, capacitor, transformer or inverter board](https://microwaverepair.center/services/microwave-high-voltage-diode-and-capacitor-repair/) | | | [Door interlock switches, latch or hinge](https://microwaverepair.center/services/microwave-door-switch-and-latch-repair/) | | | [Turntable motor, coupler or roller ring](https://microwaverepair.center/services/microwave-turntable-and-motor-repair/) | | | **Control board, keypad membrane or display** | moderate to highest | | [Exhaust fan motor, filters or heat switch](https://microwaverepair.center/services/microwave-vent-fan-and-filter-repair/) | | | [Lamp, socket, line fuse or thermal cutout](https://microwaverepair.center/services/microwave-light-and-fuse-repair/) | | | [Drawer drive motor, gear rack, slides or position switches](https://microwaverepair.center/services/microwave-drawer-mechanism-repair/) | | | [Convection element, hot-air fan, lamps or sensor](https://microwaverepair.center/services/speed-and-convection-microwave-repair/) | | ## Where it comes up most. Most bookings: Microwave hood combination, Built-in microwave, Microwave drawer, Countertop microwave. [All microwave types](https://microwaverepair.center/types/) Codes that lead here - [`ERROR` Bertazzoni · Sensors and temperature](https://microwaverepair.center/error-codes/bertazzoni-error/) - [`E-xx` Bosch · Control board and touchpad](https://microwaverepair.center/error-codes/bosch-e-xx/) - [`HOT` Café · Sensors and temperature](https://microwaverepair.center/error-codes/cafe-hot/) - [`C-10` Dacor · Sensors and temperature](https://microwaverepair.center/error-codes/dacor-c-10/) [All 73 codes that lead here](https://microwaverepair.center/error-codes/#family-sensor) Often the same visit - [**Microwave diagnostic visit** 3 problems in common](https://microwaverepair.center/services/diagnostic-visit/) - [**Speed and convection microwave repair** 3 problems in common · moderate to highest](https://microwaverepair.center/services/speed-and-convection-microwave-repair/) - [**Microwave door switch and latch repair** 2 problems in common · low to moderate](https://microwaverepair.center/services/microwave-door-switch-and-latch-repair/) ### Microwave hood combination ### Built-in microwave ### Microwave drawer ## The makes we see it on. 18 makes on this site, and the microwave control board and touchpad repair on any of them. Each mark opens that make's own page. [All 18 brands](https://microwaverepair.center/brands/) ## Microwave control board and touchpad repair, where we come out. The kitchen, the climate and the building all change how the microwave control board and touchpad repair goes. These notes are about that, metro by metro. [All service areas](https://microwaverepair.center/locations/) [Tampa Bay](https://microwaverepair.center/locations/tampa-bay/) FL · 31 areas A lightning strike near a Tampa Bay home can leave a microwave's board dead or its display scrambled, and the repair tests the fuse and the low-voltage transformer first, then replaces whichever board or touchpad no longer answers. - [Hyde Park](https://microwaverepair.center/locations/tampa-bay/hyde-park/) - [Davis Islands](https://microwaverepair.center/locations/tampa-bay/davis-islands/) - [Palma Ceia](https://microwaverepair.center/locations/tampa-bay/palma-ceia/) - [Westchase](https://microwaverepair.center/locations/tampa-bay/westchase/) - [Carrollwood](https://microwaverepair.center/locations/tampa-bay/carrollwood/) - [Belleair](https://microwaverepair.center/locations/tampa-bay/belleair/) - [St. Pete Beach](https://microwaverepair.center/locations/tampa-bay/st-pete-beach/) - [Palm Harbor](https://microwaverepair.center/locations/tampa-bay/palm-harbor/) [Orlando](https://microwaverepair.center/locations/orlando/) FL · 30 areas Orlando rental touchpads are pressed with wet and sticky fingers all week, and a key that no longer responds, or one that starts the microwave by itself, is a membrane worn past cleaning that the repair replaces. - [Winter Park](https://microwaverepair.center/locations/orlando/winter-park/) - [Windermere](https://microwaverepair.center/locations/orlando/windermere/) - [Dr. Phillips](https://microwaverepair.center/locations/orlando/dr-phillips/) - [Bay Hill](https://microwaverepair.center/locations/orlando/bay-hill/) - [Lake Nona](https://microwaverepair.center/locations/orlando/lake-nona/) - [Heathrow](https://microwaverepair.center/locations/orlando/heathrow/) - [Celebration](https://microwaverepair.center/locations/orlando/celebration/) [Miami / South Florida](https://microwaverepair.center/locations/south-florida/) FL · 47 areas Salt and humidity in South Florida towers creep under a microwave touchpad and into the board's connectors, causing phantom presses or dead keys, and the repair replaces the membrane or the board once the damp's way in is found. - [Brickell](https://microwaverepair.center/locations/south-florida/brickell/) - [Coconut Grove](https://microwaverepair.center/locations/south-florida/coconut-grove/) - [Coral Gables](https://microwaverepair.center/locations/south-florida/coral-gables/) - [Pinecrest](https://microwaverepair.center/locations/south-florida/pinecrest/) - [Key Biscayne](https://microwaverepair.center/locations/south-florida/key-biscayne/) - [Aventura](https://microwaverepair.center/locations/south-florida/aventura/) - [Sunny Isles Beach](https://microwaverepair.center/locations/south-florida/sunny-isles-beach/) - [Bal Harbour](https://microwaverepair.center/locations/south-florida/bal-harbour/) - [Miami Beach](https://microwaverepair.center/locations/south-florida/miami-beach/) - [Golden Beach](https://microwaverepair.center/locations/south-florida/golden-beach/) - [Weston](https://microwaverepair.center/locations/south-florida/weston/) - [Boca Raton](https://microwaverepair.center/locations/south-florida/boca-raton/) - [Palm Beach](https://microwaverepair.center/locations/south-florida/palm-beach/) [New York Metro](https://microwaverepair.center/locations/new-york/) NY · 75 areas Steam from the pots below rises straight into a New York microwave hood combination's touchpad in a small kitchen, and years of it lift the membrane at its corners until keys fail; the repair fits a new touchpad and tests the board behind it. - [Upper East Side](https://microwaverepair.center/locations/new-york/upper-east-side/) - [Upper West Side](https://microwaverepair.center/locations/new-york/upper-west-side/) - [Tribeca](https://microwaverepair.center/locations/new-york/tribeca/) - [SoHo](https://microwaverepair.center/locations/new-york/soho/) - [Greenwich Village](https://microwaverepair.center/locations/new-york/greenwich-village/) - [Battery Park City](https://microwaverepair.center/locations/new-york/battery-park-city/) - [Brooklyn Heights](https://microwaverepair.center/locations/new-york/brooklyn-heights/) - [Park Slope](https://microwaverepair.center/locations/new-york/park-slope/) - [DUMBO](https://microwaverepair.center/locations/new-york/dumbo/) - [Forest Hills](https://microwaverepair.center/locations/new-york/forest-hills/) - [Great Neck](https://microwaverepair.center/locations/new-york/great-neck/) - [Southampton](https://microwaverepair.center/locations/new-york/southampton/) - [Scarsdale](https://microwaverepair.center/locations/new-york/scarsdale/) [Houston](https://microwaverepair.center/locations/houston/) TX · 36 areas A Houston microwave whose display stayed blank after the February 2021 freeze or a summer outage may have lost a board fuse or its power supply section, and those are tested before the whole control board is replaced. - [River Oaks](https://microwaverepair.center/locations/houston/river-oaks/) - [Memorial](https://microwaverepair.center/locations/houston/memorial/) - [Tanglewood](https://microwaverepair.center/locations/houston/tanglewood/) - [Greater Heights](https://microwaverepair.center/locations/houston/greater-heights/) - [Kingwood](https://microwaverepair.center/locations/houston/kingwood/) - [Bellaire](https://microwaverepair.center/locations/houston/bellaire/) - [Bunker Hill Village](https://microwaverepair.center/locations/houston/bunker-hill-village/) - [Piney Point Village](https://microwaverepair.center/locations/houston/piney-point-village/) - [Hunters Creek Village](https://microwaverepair.center/locations/houston/hunters-creek-village/) - [Sugar Land](https://microwaverepair.center/locations/houston/sugar-land/) - [Cinco Ranch](https://microwaverepair.center/locations/houston/cinco-ranch/) - [The Woodlands](https://microwaverepair.center/locations/houston/the-woodlands/) - [West University](https://microwaverepair.center/locations/houston/west-university/) [Chicago](https://microwaverepair.center/locations/chicagoland/) IL · 50 areas Chicagoland kitchens remodeled in the 2000s hold microwaves now old enough for cracked touchpad membranes and worn board relays, and the repair sources the maker's own part for the exact model before the visit. - [Lincoln Park](https://microwaverepair.center/locations/chicagoland/lincoln-park/) - [Near North Side](https://microwaverepair.center/locations/chicagoland/near-north-side/) - [West Loop / Near West Side](https://microwaverepair.center/locations/chicagoland/west-loop-near-west-side/) - [Wilmette](https://microwaverepair.center/locations/chicagoland/wilmette/) - [Winnetka](https://microwaverepair.center/locations/chicagoland/winnetka/) - [Glencoe](https://microwaverepair.center/locations/chicagoland/glencoe/) - [River Forest](https://microwaverepair.center/locations/chicagoland/river-forest/) - [Oak Park](https://microwaverepair.center/locations/chicagoland/oak-park/) - [Hinsdale](https://microwaverepair.center/locations/chicagoland/hinsdale/) - [Lake Forest](https://microwaverepair.center/locations/chicagoland/lake-forest/) - [Highland Park](https://microwaverepair.center/locations/chicagoland/highland-park/) - [Gold Coast](https://microwaverepair.center/locations/chicagoland/gold-coast/) - [Lakeview](https://microwaverepair.center/locations/chicagoland/lakeview/) [Los Angeles](https://microwaverepair.center/locations/los-angeles/) CA · 95 areas Los Angeles owners often report a microwave that beeps and shows a code after a power shutoff, and many only need the clock set or the control lock cleared; a board that stays dark after that is tested and replaced. - [Beverly Hills](https://microwaverepair.center/locations/los-angeles/beverly-hills/) - [Bel Air](https://microwaverepair.center/locations/los-angeles/bel-air/) - [Holmby Hills](https://microwaverepair.center/locations/los-angeles/holmby-hills/) - [Brentwood](https://microwaverepair.center/locations/los-angeles/brentwood/) - [Pacific Palisades](https://microwaverepair.center/locations/los-angeles/pacific-palisades/) - [Santa Monica](https://microwaverepair.center/locations/los-angeles/santa-monica/) - [Hancock Park](https://microwaverepair.center/locations/los-angeles/hancock-park/) - [Studio City](https://microwaverepair.center/locations/los-angeles/studio-city/) - [Calabasas](https://microwaverepair.center/locations/los-angeles/calabasas/) - [Manhattan Beach](https://microwaverepair.center/locations/los-angeles/manhattan-beach/) - [Palos Verdes Estates](https://microwaverepair.center/locations/los-angeles/palos-verdes-estates/) - [Pasadena](https://microwaverepair.center/locations/los-angeles/pasadena/) - [San Marino](https://microwaverepair.center/locations/los-angeles/san-marino/) - [Malibu](https://microwaverepair.center/locations/los-angeles/malibu/) [San Diego](https://microwaverepair.center/locations/san-diego/) CA · 31 areas In a San Diego beach condo a microwave display that dims or flickers often has corroded connectors behind the touchpad, and the repair cleans or renews them before a new control board is even considered. - [La Jolla](https://microwaverepair.center/locations/san-diego/la-jolla/) - [Carmel Valley](https://microwaverepair.center/locations/san-diego/carmel-valley/) - [Point Loma](https://microwaverepair.center/locations/san-diego/point-loma/) - [Del Mar](https://microwaverepair.center/locations/san-diego/del-mar/) - [Rancho Santa Fe](https://microwaverepair.center/locations/san-diego/rancho-santa-fe/) - [Coronado](https://microwaverepair.center/locations/san-diego/coronado/) - [Encinitas](https://microwaverepair.center/locations/san-diego/encinitas/) - [Solana Beach](https://microwaverepair.center/locations/san-diego/solana-beach/) [San Francisco Bay Area](https://microwaverepair.center/locations/bay-area/) CA · 74 areas Speed and convection microwaves in Bay Area kitchens carry larger boards with more relays, and a unit that heats but will not brown, or browns but will not heat, is often one relay the technician tests on the board. - [Pacific Heights](https://microwaverepair.center/locations/bay-area/pacific-heights/) - [Presidio Heights](https://microwaverepair.center/locations/bay-area/presidio-heights/) - [Russian Hill](https://microwaverepair.center/locations/bay-area/russian-hill/) - [Noe Valley](https://microwaverepair.center/locations/bay-area/noe-valley/) - [Sea Cliff](https://microwaverepair.center/locations/bay-area/sea-cliff/) - [Hillsborough](https://microwaverepair.center/locations/bay-area/hillsborough/) - [Atherton](https://microwaverepair.center/locations/bay-area/atherton/) - [Woodside](https://microwaverepair.center/locations/bay-area/woodside/) - [Palo Alto](https://microwaverepair.center/locations/bay-area/palo-alto/) - [Los Altos Hills](https://microwaverepair.center/locations/bay-area/los-altos-hills/) - [Tiburon](https://microwaverepair.center/locations/bay-area/tiburon/) - [Piedmont](https://microwaverepair.center/locations/bay-area/piedmont/) - [Marina](https://microwaverepair.center/locations/bay-area/marina/) For the heart of your home. ## Questions about the microwave control board and touchpad repair. ### None of the keys on my microwave work. Is the board broken? Check for a lock first: most microwaves have a child or control lock that ignores every key, turned off by holding a key such as stop or start for three to five seconds, as the manual shows. Then switch the breaker off for a minute and back on. If the keys still do nothing, the keypad, its ribbon or the board needs testing. ### Why does my microwave beep or start by itself? A keypad membrane that has lifted, cracked or taken on moisture can register phantom presses, and it is common on units that live above steaming pots. Unplug it or switch off its breaker so it cannot start heating empty, and book a visit. The membrane, not the board, is usually what is replaced. ### Can a power surge ruin a microwave's control board? It can. A surge or a flickering outage can damage the board's power supply or scramble its memory. Switch the breaker off for a minute to let the board restart. If the display stays dark or shows nonsense, the board's supply is tested before the whole board is replaced. --- **[Read on the site: Microwave Control Board and Touchpad Repair](https://microwaverepair.center/services/microwave-control-board-and-touchpad-repair/)** **[Book a visit with MicrowaveRepair.center](https://microwaverepair.center/schedule/)**