HMI Operator Panel Repair and Service

Comprehensive HMI Panel Service

HMI panels (Human Machine Interface) are a key element of the operator–machine interface in industrial automation. They enable process visualization, parameter input and machine control. EFIXLAB offers professional service for all types of HMI panels — from simple text panels to advanced touchscreen panels with colour displays.

Supported HMI Panels

Siemens SIMATIC HMI

Full range of Siemens panels — from Basic Panel to Comfort Panel:

Comfort Panel — TP700, TP900, TP1200, TP1500 (TFT screen repair, digitizer replacement)
Comfort Panel Mobile — KTP400, KTP700 (electronics regeneration, battery replacement)
Basic Panel — KTP400, KTP600, KTP900, KTP1200 (communication port repair)
Multi Panel — MP177, MP277, MP377 (LCD replacement, touch screen repair)
Touch Panel — TP170, TP270, TP277, TP370 (legacy systems, CCFL backlight replacement)
Text Display — TD200, TD400 (character display repair, keyboard service)
Mobile Panel — 177, 277 PN/IWLAN (WiFi module repair, battery replacement)

Allen-Bradley / Rockwell Automation

PanelView Plus 7 — 400, 600, 700, 1000, 1250, 1500 (touchscreen and mainboard repair)
PanelView Plus 6 — 400, 600, 700, 1000, 1250 (LCD replacement, backlight regeneration)
PanelView 5500 — older model repair, backlight replacement
PanelView 800 — compact HMI (electronics repair, calibration)
PanelView Component — 2711C series (display replacement, contact repair)
VersaView Industrial Monitors — 6180/6181 series (industrial monitor repair)

Schneider Electric

Magelis GTO — Advanced 7\", 10\", 12\", 15\" (multi-touch panel repair)
Magelis GTU — Universal 3.5\", 4.3\", 5.7\" (screen replacement, electronics regeneration)
Magelis STO/STU — Smart Touch (Ethernet/Serial communication module repair)
Magelis XBT-GT — graphic panel series (TFT LCD, touch screen replacement)
Magelis XBT-N/P — keypad panels (membrane repair, display service)

Mitsubishi Electric GOT

GOT2000 Series — GT27, GT25, GT23, GT21 (wide panel repair, USB/Ethernet port service)
GOT1000 Series — GT16, GT15, GT14, GT11, GT10 (display replacement, backlight regeneration)
GOT-F900 Series — F940, F930 (legacy systems, parts replacement)
GS Series — GS21, GS15 (compact HMI, electronics repair)

Pro-face (Schneider Electric)

GP4000 Series — GP-4501T, GP-4601T (10.4\", 12.1\" screen repair)
GP3000 Series — GP-3500T, GP-3600T (LCD replacement, touch regeneration)
LT3000 Series — LT3301, LT3401 (compact panels, communication repair)
ST Series — ST401, ST402 (text panels, display repair)

Weintek / Weinview

cMT Series — cMT3151, cMT3072 (modern Android-based HMI)
MT8000 Series — 4.3\"–15\" screens (popular budget panel repair)
eMT Series — compact panels (LCD replacement, touch calibration)

Other Manufacturers

Omron NS Series — NS5, NS8, NS10, NS12, NS15 (touch panel repair)
Delta DOP Series — DOP-100, DOP-A/B/W (display replacement, regeneration)
B&R Power Panel — PP41, PP65, PP100 (automation panel repair)
Beijer iX / X2 — HMI series for SCADA (electronics repair)
Eaton XV Series — XV100, XV300 (operator panel repair)

What We Repair

Touchscreens

Touchscreens are the most frequently damaged HMI component. We repair:

No touch response — damaged resistive/capacitive digitizer
Incorrect calibration — touch point drift, USB controller problems
Cracked touch layer — protective glass / digitizer replacement
Contamination under screen — delamination, dust, moisture under touch layer
Dead screen areas — damaged traces in FPC ribbon cable

LCD / TFT Displays

No image — LCD controller (COF) failure, LVDS problems
Dim / dark screen — LED/CCFL backlight damage
Lines on screen — damaged LVDS cable, TAB connection issues
Discoloration — LCD matrix degradation, polarizer problems
Dead pixels — damaged TFT transistors in the matrix

Backlight

LED backlight — LED strip replacement, LED driver (DC-DC converter) repair
CCFL backlight (older panels) — fluorescent tube replacement, inverter repair
Uneven backlight — light diffuser / optical film replacement
Flickering screen — inverter instability, output capacitors

Electronics & Mainboards

Processor & memory — ARM CPU, Flash, RAM replacement
Communication ports — RS232/RS485, Ethernet, USB repair
Power supplies — DC/DC 24 V → 5 V / 3.3 V regeneration
Touch controllers — USB touch controller IC replacement
RTC (real-time clock) — battery and oscillator replacement

Keys & Membranes

Membrane keypad replacement (no response, wear)
Mechanical button repair
Key backlight regeneration
FFC/FPC ribbon cable connector replacement

Housings & Mounting

Cracked plastic housing repair
Seal replacement (IP65/IP67)
Connector and port cover regeneration
Mounting clamp replacement

Typical Failures & Symptoms

Display Problems

Black screen — no power, backlight failure, LCD controller damage
White screen — no LVDS signal, damaged COF connections
Distorted image — sync issues, timing controller damage
Low contrast — backlight degradation, polarizer problems

Touch Screen Problems

Touch completely unresponsive — digitizer, FPC cable or controller damage
Touch works only in part of screen — broken traces in touch film
Ghost touches — contamination, moisture, controller damage
Requires hard press — worn / delaminated resistive screen

Communication Problems

No PLC connection — damaged RS232/RS485/Ethernet ports
Intermittent communication — cable issues, EMI interference
Timeout errors — incorrect settings, damaged transceivers

Power Supply Problems

Panel won\'t start — input supply damage, blown fuses
Restarts during operation — capacitor issues, supply overload
Overheating — fan failures (if present), blocked ventilation slots