Samsung T220HD - 4. Troubleshooting; 4-2. No Power; 4-3. No Video (Analog PC); 4-4. No Video (Digital-HDMI)

4-1
4. Troubleshooting
4. Troubleshooting
4-1. First Checklist for Troubleshooting
Check the various cable connections first.
- Check to see if there is a burnt or damaged cable.
- Check to see if there is a disconnected cable connection or a connection is too loose.
- Check to see if the cables are connected according to the connection diagram.
Check the power input to the Main Board.
Check the following circuits.
• No raster appears: Function PBA, Main PBA, I/P PBA
• 55V develop but no screen: Main PBA
• 5V does not develop: I/P PBA
Check the voltage in and out between the IP⳪ Main Board, between the IP⳪ Panel, and between the Main LVDS
Boards.
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