Hi !
I'm amazed no one has actually got the correct info on the actual cause of this problem.
Basically, the PSU used in this hard drive model is near enough the same as the basic model with no HDD.
So - add the extra load caused by the PSU and it fails eventually. That's why most of the problems seem to occur when dubbing. Both the RAM drive and HDD are running flat out.
You may find it hard to believe, but it's a fact. A defective PSU can cause the repeated "Self Check" message, "Hello" > "Bye" display, random shutdowns etc.
The cure is to replace three parts in the PSU, and it's not an expensive fix. The parts are available from Panasonic to authorised service agents only.
As long as the unit is taken to an Authorised DSN repair centre, they will upgrade the firmware to the latest version at the same time. This usually helps with any media compatibilty problems etc.
I've repaired lots of this model for the same fault, and it's rare that the HDD fails.
There is an issue on early E85's which makes it look like the HDD has failed, but it hasn't. It's just the drive silicon serial number is no longer recognised by the Panasonic software. The fix for this is to replace the drive with any old HDD, power on then back off. Remove the HDD you just fitted, and put the original HDD back in.
When you power up, the recorder will display a "format new drive" message. DON'T do this (unless you want to loose all your recordings). Just press Return (or exit) on the remote to get back to the normal menu's etc.
As a previous post states - be very careful with the flexi cable connected to the HDD, it's very thin and easily damaged. Mains voltages can kill, so unplug the set from the mains before removing the top cover. You have been warned!
Anyone want any specific info - send me a PM off list. Can't discuss too much here !
Cheers
MJ