THOMSON 32LM051B6 - 8.6 Key Board Troubleshooting

32’’ LCD TV Color Monitor Thomson 32LM051B6
31
Key Board
OSD is unstable or not working
Is Key Pad Board connecting normally?
Connect Key Pad Board
Is Button Switch normally?
Replace Button Switch
Y
N
N
Is Key Pad Board Normally?
Replace Key Pad Board
Y
N
Y
Check Main Board