LB50091 LED Backlight Strips for Insignia & Sharp TVs
LB50091 LED Backlight Strips: Insignia & Sharp TV Guide
Looking for LB50091 LED backlight strips to repair a 50-inch TV? The GuuYebe replacement set contains eight strips for selected Insignia and Sharp televisions, including the Insignia NS-50DF710NA19 and Sharp LC-50LB601U. Here is what the kit includes, which part numbers to check, and when a backlight replacement may be worthwhile.
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What Comes in the LB50091 Replacement Set?
This is an eight-piece kit: four left (L) strips and four right (R) strips. The product information describes an eight-LED left/right arrangement with individual LEDs rated at 3V. It lists LB50091 V0_00 and V1_00 references, with segment measurements of 623 × 12 mm and 340 × 12 mm, plus an overall listed length of 958 mm. Because the stated dimensions do not fully reconcile, compare your original parts rather than relying on these measurements alone.
- Primary part number: LB50091
- Strip markings: LB-PM3030-GJBBY504X8ABL2-L-T and LB-PM3030-GJBBY504X8ABL2-R-T
- Panel references: TPT500U1-QVN03.U and TPT500J1-HVN07.U
- Package: Eight strips total (4 L + 4 R); fixed-length, not cut-to-fit parts
Which Insignia and Sharp TVs May Fit?
The supplied compatibility information lists Insignia NS-50DF710NA19 (REV A and REV B), Insignia NS-50DF711SE21 (revision not specified), and Sharp LC-50LB601U (REV A-PR). These are reference matches, not a guarantee for every production run.
Before buying: Check the complete TV model and revision on its label. Compare your original LB50091 markings, left/right strip positions, connector orientation, LED spacing, and mounting locations with the product photos. A similar TV model or connector alone does not confirm fitment.
When Is Backlight Replacement Worth Considering?
If the TV plays sound but the screen stays black, failed LED backlighting is one possible cause. With the television still assembled, a flashlight pointed at an angle across the powered-on screen may reveal a faint picture. That suggests a lighting issue, but it does not prove the strips are defective; the LED driver or power circuitry could also be responsible. See this sound-but-no-picture troubleshooting guide before purchasing parts.
Our Recommendation and Installation Notes
The GuuYebe LB50091 LED backlight strips kit is worth considering when the installed left and right strips match the listed markings and layout. Buying a complete matching eight-strip set may be more convenient than combining new and aged backlights. However, replacing strips involves lifting a fragile LCD panel, and internal circuitry can retain hazardous voltage even when unplugged. If you are inexperienced with TV disassembly, use a qualified repair technician.
Quick Questions
How many strips are included? Eight: four left and four right.
Will this fit every NS-50DF710NA19? The listing references REV A and REV B, but the installed strip assembly must still match.
Can these strips be cut to fit? No. The supplied description says they have fixed lengths.