TCL LEDTVVJG32HH-ZMA Service Manual page 27

2、abnormal picture ：
Individual signal source
bad
Check the path with this
signal source
Abnormal picture
Check the peripheral circuit
of mail IC,updating SW,reset
NVM,replace main IC
Check crystal frequence？
All signal source bad
Check panel ID？
Check LVDS signal to main
IC？check LVDS cable?