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Hi there, sorry to hear you're having trouble with the tv,
This is most likely a bad inverter, based on what you've described.
Is this something you're looking to repair yourself, or just trying to get an idea of the problem and an estimate of the cost to fix?
Have you done any diagnostics yet, checking for obvious visual signs like bad caps?
Do you still see an image on the display when this happens? (to confirm it is backlight going out)?
Yes there are no signs of bad caps on the power supply
Looking from the back with the access panel off the back light goes out
Okay, it is most likely a bad inverter then. There are actually 2 of them, a master and slave,
you can buy them both as a pair quite cheaply (used),
so it would make the most sense to just buy the pair and swap both out at the same time,
Does this model have a common history of the display going bad?
I have seen several instances with this model failing, at multiple failure points including the inverter and power supply.
But since you've checked the power supply caps already, and especially since sound seems to continue working, I'd expect it is the inverter. If the display it self was going, the light may stay on
Should I take a chance on the inverters?
That would be my first step, unless you want to buy a service manual and do some testing with a multimeter.
A lot of times the service manual would cost you about as much as this part, and if the inverter didn't help in the end, you could always return it, or sell it
Since the price is good to invest I think I will try the inverters
and move on to other possibilities.
If the inverters cost more, I would go the other way and spend your time and money on testing first,
but in this case, I think it's a safe bet to just buy the part and swap them out.
You have answered well
I am a newbie so may I ask since I am a premimum member will I be charged for this session?
Thanks, XXXXX XXXXX by chance doesn't work, feel free to get back in touch.
Well when you say premium member, I'm assuming you mean you have a monthly subscription plan?
If so, then the cost should be covered by your subscription.
You have helped me a great deal even if we don't follow up later
Giving you an excellent rating!
Greatly appreciated, thank you!If you have any other questions, just let me know. I also invite you to contact me directly with any future support needs at http://www.justanswer.com/electronics/expert-p0llinate/
Thank you, XXXXX XXXXX a good day,
Ooops had ratings locked, open now, sorry about that.