Sharp LC-32LE240EV - Keypad Touchpad Problems; USB Problems

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LC-32LE240
LC-40LE240
21.5. Keypad Touchpad Problems
Problem: Keypad or Touchpad is not working
Check keypad supply and KEYBOARD pin on MB62.
21.6. USB Problems
Problem: USB is not working or no USB Detection.
Check USB Supply, It should be nearly 5V.
21.7. No Sound Problem
Problem: No audio at main TV speaker outputs.