Solved! USB Port Power

[Spike2005]

can the service usb on Sharp model lc-32s7e-bk supply power. I have used this method on LG to power up an Anycast Dongle.

 

[madmatt30]

Any USB by its spec alone can & will supply 1a of power minimum (5w)
Anycast dongles all rated below that from what I can see.

 

[Spike2005]

Any USB by its spec alone can & will supply 1a of power minimum (5w)
Anycast dongles all rated below that from what I can see.

 

[Spike2005]

That's my understanding. However the LED on the dongle flickers on & goes off again. I was wondering if there was some sort of factory setting disrupting the supply.

 

[madmatt30]

Then it may be the actual data interface on the TV trying to connect to the all cast

You only need the 2 outside contacts connected for power ,you could try some very thin insulation tape over the other contacts to cut data contact with the socket.

 

[jsmithepa]

Maybe the LED signals more than power availability?

 

[Spike2005]

I've physically eliminated the data channels using an old USB extension however the problem remains the same. The dongle powers up for a couple of seconds then loses power. Looks like I'm going to have to put an external power supply on the dongle.