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42LH250C (CHASSIS:LD91Z) - LG TV Service Manual (repair manual). Page 73

Read LG 42LH250C (CHASSIS:LD91Z) Service Manual online

Making 
Revision 
2009. 2 . 1
LCD TV
Symptom
RJP Problem
Check the “RJP” item
on SVC Menu
YES
Check the supply 12V power 
of RJP.(JK409_Pin1)
YES
NO
Replace the “RJP” item
from No to Yes .
NO
Check the supply power.
Replace JK409
Check the JK409
NO
19~42LH250C
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