LCD LED Service mode

LCD LED Service mode

01 T56J11.2 Menu+8896
02 TP.HV320.PB801 Menu+1147
03 T.R85.031 Menu+1147
04 T.VST59.031 .A81 A8 Menu+1147
05 T5964.81 Menu+1147
06 SKR.031 Menu+1147
07 SKR.801 Menu+1147
08 V56U V56J11.2 Menu+1147
09 T.V56.031 A8 Menu+1147

If you have an other Board, You can Try below codes one by one
Menu+1147
Menu+1183
Menu+1185
Menu+1187
Menu+2008
Menu+7050
Menu+2580
Menu+8202
Menu+7343
Menu+1999
Menu+0000
Menu+1167
Menu+1199
Menu+2383
Menu+2387
Menu+8893
Menu+1234
Menu+4725
Source+3138
Source+2580
Source+2583
Source+2585
Source+2283
Source+2285
Source+7342
Source+0000
Source+3137
Source+3195

Credit Sir NayMinTun