LOOKING FOR A MANUAL AND A REMOTE FOR MY STR-DB 780

1. Check your receiver's input:

If you're having trouble getting your Sony STR-DN850 to play nice with your receiver, the first thing you should do is check the receiver's input.

Make sure that the receiver is set to the correct input for the Sony STR-DN850. If you're not sure, consult your receiver's manual.

2. Check your Sony STR-DN850's output:

Next, you'll want to check the Sony STR-DN850's output. There are a few things you can check here. First, make sure that the Sony STR-DN850 is set to output audio to your receiver. You can do this by going into the Sony STR-DN850's menu and checking the "Audio Out" setting. Second, make sure that the Sony STR-DN850 is outputting audio in the correct format.

If you're not sure, consult your Sony STR-DN850's manual.

3. Try a different receiver:

If you're still having trouble, you may want to try a different receiver. Sometimes, different receivers can play nicer with the Sony STR-DN850 than others. If you have a friend or family member with a receiver, see if you can borrow it for a few days to see if it makes a difference.

4. Check your receiver's remote:

Finally, if you're still having trouble, you may want to check your receiver's remote. Sometimes, the remote can be the culprit when it comes to receiver/Sony STR-DN850 compatibility issues.

Make sure that the remote is set to the correct input for the Sony STR-DN850 and that all the buttons are functioning properly. If you're still having trouble, you may need to consult your receiver's manual.

what you are talking about is impedance matching... it is done to avoid reflection... reflection causes noisy output due to distortion so only wires of specified thickness is being used... you can achieve the desired result by changing the length of the new wire you tried...

HI YES YOURE GOING TO NEED A FEW RCA CABLES u. can use video 1 to plug youre tv in and use video 2 to plug in youre vcr ::::::::::connect youre speakers up to the red and black speaker terminals marked L & R..good luck

using the remote for the unit, enter into the "Menu" select Audio options and set it to "Auto". If you still have a problem, post a reply and I can help you further. There are a few more possibilities!

If the remote is functionally the same as the original RM-LP204

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Sony-STR-DE845-Receivers-manual/id/387ci973/t/2/

http://www.fixya.com/support/p224538-sony_str_db780_5_1_channels_receiver/manual-16199

I had a similar problem (apparently 'dead' remote) for which I accidentally discovered the following remedy on one of these specialized sites where you can buy remotes. This site had a 'troubleshooting' section :
Remove the batteries and subsequently press ALL keys of the remote, one by one, for a couple of seconds.
After that replace the batteries.
It worked for me. Good luck

Is it a US model? I can't find a listing at all direct from Sony. Is it STR-DB780 or STR-DB870?

For the 870 it's http://www.docs.sony.com/release/STRDB1070.PDF

Hope this helps

sounds like your sound output ic may have gone.this is normally connected to a heat sink.also check that sound output settings are ok before you go further

I went through the amp/receiver and used small star washers on all the grounding screws I could find including the one securing the transformer, cleaned dust off all circuit boards, checked output transistors and fuses, all OK.

Re Assembled unit and it worked OK.

I will buy a fan and fan it to avoid sourcing heatsinks for the previusly suggested IC's.

Thanks for the technical help, sure solved my problem.

Regards

Darryl.