Is your TV showing a black screen, flickering backlight, sound without video, or vertical lines? Global Electronics provides expert doorstep diagnosis and component-level repairs for Samsung, LG, Sony, TCL, Mi, OnePlus, and all 32" to 75"+ Smart TVs.
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Modern LED, QLED and OLED televisions are sophisticated electronic systems. Here is how our technicians diagnose and resolve common faults.
When your TV turns on, channel sound or speech is audible, and flashlight test reveals faint images on the dark panel, the LED backlight array has failed. We carry authentic aluminum-backed LED strips with high lumen output and proper voltage drivers.
Horizontal or vertical colored lines, screen jumping, or flickering are typically linked to T-Con (Timing Controller) board malfunctions or bonding tab issues. Our technicians perform micro-soldering and bypass bonding repairs to restore clarity without costly panel replacements.
If the TV refuses to turn on after a power surge or blinks a repeating error code, the power supply board (SMPS) or standby regulator circuit has tripped. We replace blown capacitors, MOSFETs, and bridge rectifiers with high-voltage rated components.
Smart TVs running Android TV, Google TV, WebOS, or Tizen can experience corrupted NAND flash memory or firmware crash. We re-flash official firmware via programmer boards or replace corrupted eMMC memory chips directly.
Muffled audio, buzzing sounds at high volumes, or complete sound loss can stem from damaged internal stereo speakers or burnt audio IC on the main logic board. We install matched impedance replacement speakers and amplifier circuits.
TV unable to detect your home Wi-Fi, unable to connect to Netflix/YouTube, or displaying 'No Signal' when set-top box is plugged into HDMI ports. We repair and replace damaged HDMI sockets and internal dual-band Wi-Fi modules.
Click below to read specific repair procedures and warranty guidelines for your television brand:
Backlight strip sets, T-Con ribbon cable bypass, and Tizen reboot repair.
View Samsung Guide →Blue tint screen repair, backlight LED replacement, and main board diagnosis.
View LG Guide →Red LED blinking code troubleshooting, power supply repair, and 4K display restoration.
View Sony Guide →Economical backlight replacement and motherboard flashing across all screen sizes.
View TCL Guide →Fast replacement of internal LED strips, Wi-Fi module repair, and boot recovery.
View Mi Guide →Sound without picture fixes, panel lines repair, and HDMI audio return channel fixes.
View OnePlus Guide →Everything you need to know about our local technician visits, pricing estimates, and coverage across East and West zones.