Originally Posted by stedmakr
Yesterday I posted the following: I did not install the TV's speaker. If you have a 5.1 speaker system the TV's speaker isn't necessary. I did connect an optical sound cable from the TV to the receiver for HMG sound through the TV's USB port.
Clint S responded: Careful of that. I don't know if this TV's amp will do it, but many amps will blow if you don't have any load (speakers) connected to them while it's trying to output power. If there's an option to turn them off without affecting audio to your receiver, then I'd do it.
The 5020 manual doesn't address this issue.
So the situation is that the 5020 speaker is not attached to the TV. All audio is routed through a Pioneer receiver. Since the 5020 can not produce audio by itself (no speaker) when I input content via the USB port on the TV (eg. an mpg) I can see the content but can't hear anything. I've solved this problem by connecting an optical cable from the TV to the receiver. When I do this the video and audio are good.
Clint S. is advising caution (as stated above). Does anyone know for sure (or think they know for sure) if this connection is putting the tv at risk?
For Clint S - I also had a great picture. After calibration it is noticeably better.
I'd be interested in knowing as well. But the problem is somewhat cumulative. Not using any load at the outputs may not cause a problem until after a certain period of time, IF it all.
You're usually are not going to find that kind of warning in manuals because it's a rarity I would guess. But I have
seen it in various amp and receiver manuals, many years ago. FAIK something may have been "changed" in the way they are made and it may no longer be a problem. Some kind of "protection circuit" would have had to have been added. Since the TV's amp is only 18wpc, this problem may not even affect low-powered amps.
Back in the 70's & 80's I had a couple of amps fry because of that, and I repaired a few as well (I used to be in the repair business). It's just not a gamble I'd be willing to take on my TV.
The TV speakers could be used as sort of a center channel speaker. I plan on using mine, but there should be something in the manual about if you can turn them off, or there may be an area in the audio settings where they or the audio can be turned off, without affecting audio output to external components.