It should be by pressing the SPLIT button on the remote and the VOLUME DOWN on the TV simultaneously for more than 5 sec. Mind you the remote needs to be pointed at the set as if you were trying to change channels.
HP Photosmart 7760 printer - Will not turn on. Unplugged power cord, waited overnight, plugged back...
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HP Photosmart 7760 printer - Will not turn on. Unplugged power cord, waited overnight, plugged back in, power light flashed green a few times then went red. Cannot get the light to stay green (on).