Cisco Explorer 8842 Hard Drive Replacement
Thanks for everyone's help.
I just replaced the Seagate 320 Gb hard drive with a Western Digital 320 Gb Hard Drive. After opening the case by removing the 3 tamperproof Torx crews, I undid the 2 cables going to the hard drive. Removed the 4 screws holding the existing hard drive from the frame and replaced it with the Western Digital Drive and 4 screws. Plugged the cables back into the drive and circuit board and replaced the cover with the 3 Torx screws.
When plugging back into your tv, I recommend plugging the power cable LAST, after you have connected the HDMI cable, coaxial input and any others. Once you connect the power cable the PVR goes through it's boot up sequence and counts down. BE PATIENT and listen carefully to hear whether the hard drive is spinning and clicking (like it is working going through a boot sequence). If it seems to have stopped press the Power button and be patient again. I think I pushed the power button once before the time was displayed and once after it sounded like the drive had stopped booting up. Overall it took less than 10 min to be up and running. Overall the whole changeover took approximately 45 minutes from disassembly to successfully watching tv again.
Good luck, but be patient and listen carefully to the drive,!! Thanks