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Posts: 2
Registered: ‎07-20-2019

Insignia 43" 4k roku lcd tv ns-43dr710ca17 no backlight

In less than 2 years my ns-43dr710ca17 has very dim picture and flashing black screen every 2 seconds. I Diagnosed and when the screen goes black with a flashlight on the screen I can still see the picture so it needs a backlight inverter board

I can't find the part anywhere online I took the tv apart to find the part number on the board itself and it isnt one of the accessible boards under the back plastic cover it requires extensive disassembly to access so my question is where can I find the part and disassembly instructions?

As for disassembly my biggest problem is how to detach the ribbon cables and at the bottom there is 2 pcbs that have what looks like metal tape from contact points on the board (assume for grounding) to the large metal cover that I need to remove to access the backlight inverterboard

Once I have access to the backlight inverter board I should have an easier time finding the part with the number on the board.
Any help would be greatly appreciated
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Registered: ‎09-29-2008

Re: Insignia 43" 4k roku lcd tv ns-43dr710ca17 no backlight



Welcome to our community. 


With apologies, we would not be able to offer the assistance you are requesting to disassemble your TV. 


I would recommend contacting Geek Squad, the authorized service provider for Insignia TVs, at 800-433-5778 to schedule an appointment for a technician to visit your home for diagnostics and repairs. 


I hope this helps. Thank your for writing to us.

John|Social Media Specialist | Best Buy® Corporate
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New Member
Posts: 2
Registered: ‎07-20-2019

Re: Insignia 43" 4k roku lcd tv ns-43dr710ca17 no backlight

I disassembled and diagnosed myself
I have 18 burnt leds and the replacment led Strips are not available thru the manufacturer or the open market
18 burnt leds in less than 2 years?
Lesson learnt I'll never buy another insignia again
Thanks for your help