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Disconnect AC Power prior to making any disconnection or connection When ordering PC boards, use manufacturer ID number to confirm correct model number. Models TH-42PZ77U, TH-42PZ700U, and TH-42PZ700UA are similar but their boards part numbers are different. Upon completion of repair, perform “D Board Firmware Upgrade” according to the instructions in Service Hints SH-B34-08-01 for model TH-42PZ700U and SH-B34-08-02 for models TH-42PZ77U and TH-42PZ700UA.
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Physically disconnect the SU board and the SD board. (See precaution # 5) Plug in the TV and turn it on. Does the TV With the SU board and the SD board still Reconnect the SD board only. shut down and disconnected, remove connectors SC2 and (See precaution # 5) the power LED...