Samsung HC-R4241W Service Manual page 35

Troubleshooting
3-4 Repairing No Video (with Normal Sound)
Check the Heater
Normal
Check for High Voltage
Normal
Check CN501 Pins 1, 3, and 5
Abnormal
Check the CN501 Connector
Normal
Check IC04 Input Terminal Pins 20, 21 and 22
Abnormal
Check IC03
3-6
Normal
Check IC501, 531, and 561
Abnormal
Replace the CN501 Connector
Normal
Check IC04
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