Polaroid TLM-23201B - Troubleshooting: Key Board Issues

32″LCD TV Polaroid TLM-23201B
24
6. 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
Is Key Pad Board Normally?
Replace Key Pad Board
Check Main Board
N
N
Y
Y
N