I have an LG 46LD550 LED TV. It stays on for a few minutes then shuts itself off. After this if you try to start it back up it will flash on and off 3 times then shut off. A visual inspection shows no blown caps anywhere. I assumed it was the power supply so I changed the Power Supply/Backlight Inverter, this however is not the issue.
So I am at a loss, before I change out the main board I thought I would see if anyone else has had this issue, and if so if they were able to figure it out.
I am a rank amateur at TV repair so if you need readings I will try to figure...
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LG 46LD550 turns itself off after a few minutes then will turn on and off 3 times
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I am a rank amatuer trying to troubleshoot an LG TV
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