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Crumbtrail TV Forums: TV Equipment: TV Repair Forum:
Backlights intermittently work sometimes. Why?

 
 


billcox111
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Sep 12, 2023, 12:38 PM

Post #1 of 2 (760 views)
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Backlights intermittently work sometimes. Why? Can't Post
Insignia - 55" Class (54.6" Diag.) - LED - 1080p - HDTV
Model: NS-55D421NA16


tv will work fine 'perfect' but randomly no picture but I have audio. when this happens I can see a faint picture visible only with flash light I checked the LED’s voltage all of them check out no issues. This particular tv only has one board. Any help would be appreciated. Thanks Bill...



tvrepairtech_
New User


Oct 10, 2023, 4:32 PM

Post #2 of 2 (293 views)
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Re: [billcox111] Backlights intermittently work sometimes. Why? [In reply to] Can't Post
It sounds like a short in the backlights, even if they individually test fine. You could try replacing the circuit board but I beleive the root cause is your LED backlight strips.

https://tvpartstoday.com/search?type=product%2Cpage%2Carticle&options%5Bprefix%5D=last&q=NS-55D421NA16

 
 
 


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