Model number 43s525 Tv turns on, Back lights turn on, power led flashe

Tcl model 43s525 Tv will turn on and backlights come on, but there is no picture. The power led flashes 2 times every 2 seconds. When I press anything on the remote the power led will flash rapidly showing it is receiving the signal from the remote. Would this be a main board issue or T-con issue?

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