Removing the Back Handles and Back Cover
Loosen the four screws on the handles, and then pull the handles backward.
Loosen the screws (28 for PL4260N, 36 for PL5060N) on the large back cover, and then remove it.
PL4260N
PL5060N
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HP High-Definition Plasma TV Service Manual PL4260N, PL5060N