Poor Focus - LG Flatron T711B Service Manual

Degauss the CDT
Adjust Pole4,Pole6
to improve the misconvergence
No
Change CRT and readjust
convergence.
Done.
Adjust focus VR.
Improved focus?
NO
Check focus leads from
FBT to CRT Socket.
Check the CRT Socket.
Dynamic focus circuit is
right?
YES
Replace the CRT and verify focus.
24. Misconvergence
Yes

25. Poor Focus

YES
NO
- 33 -
Done
Aging monitor and
check for focus change.
Refer to 18 Dynamic
Focus Failure.