TCL LCD32E9A-MS91 AP Service Manual page 31

1. check the inverter voltage 24V if supply for Panel,also view the panel if
have backlight. If have backlight,it shows that have inverter voltage supply.
2. Check if have voltage of Vcc-panel for CMO panel. LG-PHILIPS L32OW 12V. Some
other small size panel is 3.3V.
3.Test waveform of LVDS if OK, LVDS OK but no display, replace the panel.
attention: Do no remove off the LVDS connector when the TV working or contact
U300 only time,to avoid shock U300.