Followed all the step for disassembly in the 27 pages of instructions. Then, sent the OB in for repair at Tri-State. Received the OB back and proceeded to re-install all the components back following the reverse process as above. I was very careful to make sure all wires were reconnected and all screws were refastened. No parts left over. When I plugged in the TV, attached the HDMI cable and the cable network cable - then turned on the cable box and TV. The red energy saver light came on, the green power light comes on as stays on for 5-10 seconds, then returns to the energy mode. No picture, no fans, no sound - nothing. Any suggestions?