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Replace panel
No picture or picture unstable
Turn on power
on power switch again.
Does power stable?
Check Power BD
Is LED light green/orange?
Is LED status normal?
Check Scalar or replace it
Does crystal work correctly?
replace it
Is interface BD normally?
Replace interface BD
6. Level 2 Circuit Board and Standard Parts Replacement
6.1. Trouble Shooting Guide
1. No Display or display is unstable:
1.1. Interface Board:
Power off ?
connector?
Yes
No
No
Yes
No
Yes
Yes
No
Yes
No
No
Yes
No
Yes