Sony XBR-55X800H Lightning damaged

[auraaura]

The power surge came-I think- through the DSL line. TV gave a very audible pop and died. (Ethernet ports in modem were all killed too). Power light on TV was dead. I ordered a "Complete LED TV Repair Parts Kit" from shopjimmy.com and installed everything ( https://www.shopjimmy.com/sony-xbr-5...air-parts-kit/ ). TV will turn on for about 30 seconds or so then shut down. Power light flashes 7 times repeatedly. I've seen that this indicates a high voltage shutdown.? But-where is this coming from since I've replaced power supply, main board, etc.? I see that shopjimmy has a IR Remote Sensor Board for this set (this is where the power switch lives). Could this be bad? I apologize for my ignorance , my electronic knowledge extends only about as far as swapping out parts.