Samsung PS42B451B2WXXU Service Manual page 68

Troubleshooting
■ ■ Y-RR and Y-FR controls
Y-FR
<42">
Y-FR
<50">
Set the main reset (rising : 60usec, falling : 80usec) by change the value of variable resistor.
Rising ramp
variable resistor
60usec
80usec
Falling ramp
variable resistor
▶The picture is only for 50".
42" has only Falling ramp variable resistor.
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