Take a look at the Sony a330. It has a viewfinder, tilt screen and built in Steady Shot.

The term "Point - and - Shoot" simply implies that there is little thought to the operation of the camera other than pointing it at your subject and pushing the button. Compact cameras are that way, little to no manual control.
A Digital-SLR camera can also be a "Point - and - Shoot" camera. It also has a Full Auto mode where it makes all the decisions for the photographer except composition of the shot, plus can be manual when needed.
Just some of the big benefits of a Digital-SLR over the Compact Camera is:
Much larger sensor (3 times larger or more) giving a sharper, more colorful image that can be enlarged much better.
Almost Unlimited optical zoom by different lenses and attachments.
Full manual control for total creative control.
...and much more.
Cost of entry level Digital-SLR cameras are now not much more than a high end Compact and the final image is far better.

The shutting off may be a safety circuit cutting the power to the receiver. Usually a grounding issue.
Check to see if you have the receiver plugged into a different wall outlet than the TV feeding it a signal. The should both be on the same outlet.
Also check that ALL of the speakers have the black wire connected to the black connector on the receiver and the speaker, also check all color coded wires are connected to the corresponding colors. Lastly make sure there is NO stray or frayed wires cross touching (black touching any other color).
If this doesn't help it probably needs service.

Take a look at the Rocketfish Wireless Speakers.