Can you locate a manual for a ONKYO AV Receiver ? Model # TX-SR304

Here is the pdf http://63.148.251.135/redirect_service.cfm?type=own_manuals&file=TX-SR304_En_0124.pdf . I found it on Onkyo's support page http://www.onkyousa.com/download/own_manuals.cfm?cat=Receiver

Your Onkyo TX-SR304 receivers remote (RC-645S) is not capable of controlling devices by other manufacturers. It controls only Onkyo devices.
Other Onkyo remotes do have universal remote functionality and you can download Onkyo remote codes here.

I hope that helps.
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Download Onkyo TX-SR304 users manual here.

The only possibility that comes to mind is that it may be causing a short somehow when the carousel gets to that position, maybe a broken solder joint. Another possibility is that there may be a foreign object stuck inside the player such as another disc that lost it's position.

onkyo .com

There's a fre service manual here, you need to join tte site (free)

Onkyo TX SV727 Manual AV Control Receiver HiFi Engine

http://63.148.251.135/redirect_service.cfm?type=own_manuals&file=TX-SR304_En_0124.pdf

If you put DVD with Dolby Digital soundtruck it will show on your TX-SR304 Dolby Digital mode, and if you have DVD with DTS mode it will show DTS

Not sure if this helps, but I just called Onkyo with a request for codes for the SR304. They said the only codes they have are for THEIR remote. Maybe they will work with yours. Here they are:
0276 0476 0810 1187 1376.
I tried these in the Comcast remote (adding a 3 in front of the numbers) but that didn't work. Still trying to get my Comcast remote to program the Onkyo SR304 adequately, since their published codes only partially work.

Onkyo offers access to manuals at their web site. HERE is a link to the receiver line.

Personally, I'd connect the speakers to main left/right. The subwoofer to subwoofer out. The Go VIdeo unit to VCR/Video 1, the cable box to Video 2 and the video output to the Sony TV composite input. No need to connect the TV audio out to the receiver since the audio feed comes from the cable box.