QPWBGL9931DLD Inverter -- Manufactured by Sampo for Four CCFL
Lamps TFT Module
Symptom: No Display ( No Picture) on screen but Power Indicate light stays on  green. Or
Screen Flickering.

Part Number on Board:
QPWBGL9931DLD
L0041
RUNTP5392T8
Same as Sampo QPWBGL8761DG Backlight Inverter
Same as Emax CPC1151R0015 Backlight Inverter
This Inverter works on the following models:
Brand
 Model
 Remark
Princeton
 PD-80A
 17" LCD Monitor
ViewSonic
 VE170m
 17" LCD Monitor
ViewSonic
 VA720
 17" LCD Monitor
LST01 - Laptop Screen Tester. No more guess works! $119.99
LST01 is a custom build tester for Laptop screen repair; it can help you to isolate
the problem between CCFL Backlight Lamp and Inverter in seconds.
Save Time! Save money!
LST02 - LCD Screen Tester, $229.99
02 has all LST01’s features, plus a built–in LCD Controller that equips with our
proprietary driver. By setting a dip switch, panel supply voltage, and panel cable,
it allows you to apply any test pattern through VGA input and test all types of
specification on the LCD screen and LED Screen. In addition, a custom design
Inverter allows you to test any given number of CCFL back light lamp up to 4 at
the time.
Price: $229.99.