Exception Handles; Display Exceptions; Black Screen And No Display - RCA 50LB45RQ Service Manual

Note: The exception handles are prepared for qualified personal only.
5.1 Display Exceptions
5,1.1 Black screen and no display
Note: If the troubleshooting guide can not help you with the obviation of faults, please change the non-conforming
materials to rework.
Check the external
power supply
No
No _ Yes
No _[s the power system _ Yes
Check and repair
the power module NO
signal of
380-400MHZ on
R140
N©
IsY1 or Flash(U16)
ReplaceY1 or FLASH
(U16) orQ23 NO
,L
Replace the broken
component
Yes Yes
Yes
Replace DDR
(U17)or the
main chip (U8)
Version 1.0
13