How do i change fuse in tx-ds797 receiver

Here is service manual for your help. See the pat reference on IO Board and compare it with service manual.

ONKYO TX-DS797 SERVICE MANUAL Pdf Download ' ManualsLib

Hello, your receiver does not have a USB port that would support the adapter. Thank you, Onkyo USA

Hi James, if this has not been resolved please note that the unit would have to be serviced at one of our authorized service centers. You can locate one at the following link, http://www.onkyousa.com/Support/servicecenterLocator.php?source=globalnav.


Another option would be to trade in the unit. With the trade in program we would take your unit back and sell you a reconditioned unit with a one year parts and labor warranty at a discount. To see if you unit qualifies for the trade in program please email me the units serial number to [email protected], Thanks, JT

This 12 year old receiver was sold for about 1000 dollar when on the market. from about 2002.
See what they wrote in these days:
Onkyo TX DS797 black review CNET

These units *(if I remember correctly) had a problem with a memory IC in the surround porcessing section that would show up initially as popping and would eventually end up with no sound at all. This is a straightforward repair that involves replacing the IC with a new one (different manufacturer). The problem is that this is a surface mounted IC and is difficult to replace without damaging the underlying PC board. This is NOT a DYI repair. Have this unit checked by an authorized Onkyo service center.

Dan

do you need service manual??

There is a technical bulletin from onkyo where in the problem is in the relay ckt

i need this part. email me: [email protected]

possible problem will be on the speaker relay ckt. as discussed in onkyo's service bulletin.
"When the speaker relays are activated, the collector of Q231 and Q232 should drop to near 0Vdc. Voltage can be monitored at terminal P6830 and P6832. Q231 supports RL6600, RL6602 and RL6603, where as Q232 supports RL6605 for Zone 2 operation. If the DVC at P6830 collector or its follower terminal is HIGH, it should be an open transistor Q231."

Have you made sure the receiver's INPUT SELECTOR is set to "Video 2"? I know it seems like a stupid question, but worth mentioning as many folks would set the receiver on TV, which would not work unless the signal was also plugged into a "TV input" in back of the receiver. If your setting is correct, try running the TV cable sound temporarily into the receiver's DVD input, which we know does work. If you still don't get cable TV sound when the receiver is set to "DVD", then you have a problem with the TV cable audio portion. Most receivers would fail completely, rather than have only one input fail, so my guess is that there is a hookup or switching error somewhere.