Pursue the fault procedures with the place where you bought it from.Keep a detailed and clear record of all the faults.Keep a history log of when it was returned for repair, how long it was away etc. If you have enough proof of it being faulty from early days, *try* demanding a replacement TV because you have lost faith in it's reliability.The fact that the 'engineers' have not found a fault/problem does not mean that there isn't one.Turn it off again, plug in the HDMIs, turn it back on, "no signal" from DVB. When this is plugged in to any of the HDMI inputs the DVB function displays the "no signal" msg. Turn TV off at TV switch, disconnect the HDMI from the PC, turn TV on, DVB works perfectly.
i have tried another tv (37 inch lcd) on my coaxle when the problem happens and that will work fine so i know its not the signal.
When the TV goes on protection there are only two possible causes.1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board.
this started the protection circuit.2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.
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Hi, I have 46in Panasonic TH-46PZ85B 11 months old with exactly same problem. I have a digital set top box that I use through AV1 (for recording) and it always works so I know it is not the signal.