LG 50PK950 Training Manual page 78

Y - SUS How to Check the Output FETs
Y - SUS How to Check the Output FETs
Name is printed on the components.
Readings "In Circuit" with Board Removed.
30F124
Q405, Q408, Q409,
Q411, Q412, Q413,
Q414, Q415, Q416
1K38BY
Q420, Q421, Q423
1A02BT
Q302
1K38AK 1K44AB
Q422 Q304
a
K3667
Q404
a
Q407
RF2001
D406, D407, D408
D413, D420, D421,
D412
Shown: 1.13V
Reverse: 1.9V
Blk Red
Shown: 0.7V
Reverse: 1.78V
Open
a
Blk Red
Shown: 0.51V
Reverse: 1.37V
1.9V
a
Blk Red
Shown: Shorted
Reverse: Shorted
0.3 Ohms
Blk Red
See the Y-SUS drawing (next page) for
FET Locations and Identification
Shown: 0.35V
Reverse: Open
Blk Red
Shown: 0.5V
Reverse: Open
Blk Red
Shown: 0.36V
a 0.5V
Reverse: Open
Blk Red
Shown: 0.35V
Reverse: Open
Blk Red
78 October 2010
Shown: 2.23V
Reverse: Open
Red Blk
Shown: 2.16V
a Open
Reverse: Open
Red Blk
Shown: 1.4V
a 2.1V
Reverse: Open
Red Blk
Shown: 0.35
Reverse: Open
Red Blk
50PK950 Plasma