I replaced the two STK392-110 with two STK392-150. Seemed to go fine but....

after plugging the board back in I turned the TV on and none of the laps turned on. You could here a ticking and then after several minutes the power button started to blink. Seemed to go into safe mode wouldn't allow me to do anything not even power it off. Didn't see any smoke which I guess is a good sign. Has anyone else come across this problem. Do you have any suggestion. Thanks in advance for your help.

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