21.3. Led Blinking Problem
Problem: LED blinking, no other operation
This problem indicates a short on Vcc voltages. Protect pin should be logic high while
normal operation. When there is a short circuit protect pin will be logic low. If you detect
logic low on protect pin, unplug the TV set and control voltage points with a multimeter to
find the shorted voltage to ground.
21.5. Keypad Touchpad Problems
Problem: Keypad or Touchpad is not working
Check keypad supply and KEYBOARD pin on MB62.
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