TV randomly shuts off and won't detect external devices
I have a Hisense TV, it randomly shuts off, it no longer supplies sound to my surround sound receiver and it doesn't detect any signals from externally connected equipment. I can only use the apps installed on the TV. Any advice on what parts I need would be of great help. Thanks.
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Ok so this one is complicated In my experience with this type of issue if you remove the back of the tv and look for a swollen capacitor as u can see on this pic of what I am speaking of. I had a 60 inch flat screen did the same thing. I opened it up found the one that was swollen and on mine there was only one I removed it desolidered it I went to Apache reclamation it’s a store here in Phoenix that is like a thrift store for machine parts and things like that. I m sure you could probably order one from eBay. Anyway we found the one we need and it was a little larger in size but was the same voltage and soldiered it on to the board and the tv now works. If you think you could take that on go for it. You won’t make it any worse right?
When you connect an external device to TV (without ARC) and Sound Bar, connect the HDMI cable (sold separately) from the external device to the TV. Then, connect the external device to the Sound bar using an optical cord (sold separately).
If you want to connect to just the TV, then the HDMI connection is unnecessary.
I myself find it just as good in not using the HDMI and just using the optical cord.
For a TV set to shut off randomly, it generally means that you have to ask for a technician to check its Power Supply Board.
If you have some knowledge about electronic, just open the TV and check for the PartNumber of the Power Supply of that specific model, and do a proper search on Gloogle_Search_Engine related to the same issue: BOARD NUMBER + ISSUE (stop working, works for a few minutes only... etc.) + SOLUTION.
This will offer a better understanding about the problem, so you may be OK to solved it alone.
Information is for all us to share, and you will surely find some about it. Good luck.
This is a power supply problem, meaning either the power board has a fault or is detecting a fault from another circuit and shutting down. It shuts its self down to prevent further damage too the TV and prevent an electrical fire hazard. I know its probably something you don't want to know.....LOL but have a professional technician service the TV or take it back if its still under warranty.
I believe I read somewhere that when you open the back cover over the lamp, there is a special little black switch that needs to be in the up position when you put the cover back on, or the TV can shut itself off randomly.