Join Date: Sep 2012
Location: Maryland North of Washington D.C. and West of Baltimore MD.
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Problem: My USB powered hard drive is ticking and the iView is unable to find anything (files or folder structure) on the HD. This is after a few months of it working flawlessly.
I tested the HD on my laptop and it works fine. I tested a self power HD on the iView and it worked fine. I tested the USB powered HD on the iView and it started ticking again.
Conclusion: the iView didn't have enough power to run the USB HD.
Quick fix for the problem: Buy or make a USB cable that has both the normal data/power from the iView as well as another plug for just additional power input from an AC USB power supply, I used a 5V, 2A USB wall power supply which wasn't doing anything.
This worked just fine and has now been doing so for about a month.
Initial worry: I was worried that the USB HD would remain in the On condition, it does not. When the iView turns off it must be sending an off signal to the USB HD because it too turns off. Using a switching USB AC power supply means that when the HD turns off the power usage goes way down, less than 1 watt since the Kill-O-Watt meter cannot measure it.
They used to make these things for USB external HDs but not any longer that I know of. Also, I've never seen one for a USB 2 and 3 type external HD, which is what mine is & I think all new ones are.
Rather than modifying the USB cord that came with the HD, I bought two USB 2 extension cables and combined them into the Y-cable needed with two inputs and one output. Buy two of the same type cable and then wire the same color wires together and it should be fine. NOTE: We're only going to patch in the power wires NOT the signal wires from the extra power input plug.
Before you do this buy some large heat shrink tubing to cover it all when you're done.
You only need to attach the red & black wires for the extra USB plug to the AC power supply. DO NOT CUT the other two wires on the one cable that is supplying both power and signal, those are the signal wires. When you are done connecting the power wires and soldering them cover them with tape or plastic dip. Once finished, wrap some aluminum foil over this area, make sure it connects to the previous shielding from the two cables. Now shrink the tubing over this area to both protect the area and to force a good connection with the original shielding and the new aluminum foil wrapped around the area. Having too much shielding is better than not having enough.
Test it on something other than your HD, perhaps a USB light if you have one. Make sure both inputs can supply power to the device under test ONE AT A TIME. I have a third USB extension cable with the power wires cut so I can test how much voltage and/or current is on the line to the device under test so you might want to buy a third USB extension cable for this type of testing. It does not have to be the same manufacturer as the other two since we're not wiring anything together.
Good-luck & I hope that if you've been having a similar problem this will give you the solution you need.