Onkyo DV-SP404 Service Manual page 29

For usa/canada, black/ silver
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DOES NOT LIGHT ON DISPLAY
Is the voltage at pin 13
and pin 43 of IC651
about 3V ?
Yes
Replace V651 or IC651.
TROUBLESHOOTING GUIDE
No
D-3
Check AT+3.3V line of
POWER BLOCK.

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