Onkyo TX-SR804 No Sound.. Help Everything works

SOURCE: onkyo tx sr804 receiver turns on by itself

I have the same receiver and the way to fix is simple. in the main board of this unit there are 5 connectors and they slide into other components like Lego. the issue is the king of material they are made of it's cheap. if you reseat the mainboard it will fix it for a day or two, them it will start again. the easyway is to re seat the board and put a fan inside of the receiver between the transformer and the inside of the amp pointing down about 20 degrees connect the fan to a ajustible voltage adapter and connect it to the outlet in the back of the unit. so it comes on when you turn it on. this voltage adapter is cheap. the adapters people buy for phones and or MP3's at Radio shack or Best buy it goes from 1.5v to 12 volts/ this way you can control how loud the fan is in side the receiver. i find 4.5V does the trick. The connectors on this board start to loose contact with some of the pins when heated. the fan keeps it cool enouth to fix the issue. I fixed manny these ONKYO 804's this will fix it. you just have to do it. the main board is inder the HDMI board in a Vertical position running from one side to almost the Power supply. it has 2 screws also holding it in the inside middle back of the amp. Becarefull with these amps 75 V at 23amp's DC is no joje leave it off for a couple of hours to satart working on it. Good luck.

SOURCE: onkyo TX-SR502 AV receiver

this could be the pre amp transistor or the power amp that needs replacing
the pre amp transistor is cheap but the power amp is not
if you did not crank it , then it is probably just the transistor that needs replacing

electech

SOURCE: HDMI only for video and sound through regular audio input

DVI does NOT support sound unlike HDMI. Hopefully your PC has a Co-axial S/PDIF digital output. If not you might want to spend the $50 and buy a nice one from Creative. Modern motherboards are even coming with HDMI built-in but that's NOT your situation. I use a 15" DVI to HDMI cable but you are probably using an adapter and the a regular HDMI cable. Get co-axial digital audio cable of the right length and connect it to the co-axial inputs (they're in the upper corner). Use the remote's set-up button and select the "Digital Input" option. This is very powerful. You can assign any of the Optical or Co-axial inputs to any associated device.

I have my PC as Video 3 with sound coming in via HDMI which I assign under the "HDMI Video" menu and sound under the "Digital Input" as "Coax1". I use "Coax2" for the DVD player that lacks an optical output. If you use regular analog you are screwed as you found out. I usually use the headphone jack and an extension cable with the Computer and watch on it's monitor.

All HDTV sets are **** compared to a decent computer monitor. The deliver MUCH clearer video and much higher resolutions that shitty the 1080 HDTV maxes out at. ATSC is **** compared to a PC. Grated, cable is junk compared to ATSC at 1080i but that's another story. Yet, comparing ATSC to a computer is like comparing NTSC or digital cables' crappy 480i with ATSC at 1080i. It that much greater. At least 720p is wide screened unlike 480i garbage that's most of Comcast's "HD" digital junk.

SOURCE: Onkyo TX-SR701 no Digital output sound!!

befor go to any direction please repeat your system setup as manual told you(for digital output setting)

SOURCE: Onkyo TX-DS696. No right channel speaker sound

hello there 2 transistor 1 for the right channel and 1 for the left first thing 2 do is a visual check in good light check for any burn't part or any bulging capacitors if everythink looks ok then check underneath the board for dry joints if then you will need a mulitmeter to start testing components

regards
shasun

Testimonial: "Thanks - i'm gonna hv to take in in for the experts as i couldnt see anything visually."