Question about Sony STR-DB780 Receiver

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My remote won't work it is locked out some how on a sony amp str db780 how do i fix this. my email

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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

Posted on Oct 17, 2010


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Posted on Jan 02, 2017


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I've got a Sony STR-K880 Cinema surround system and the remote control won't work it anymore! The only thing it will do is turn the system off when I push the'AV I-O' button and the &#

I had the same problem. Found the fix in this document
STR-K880 service manual
On the amp, while powered off:
"While depressing the INPUT MODE button, press the POWER button to turn on the main power."
You may need to do this more than once.
This switches command mode between AV1 and AV2.

Jul 08, 2012 | Sony Audio Players & Recorders

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Protection Problem with Sony STR-DB780 AV Amp / Sony SA-VE535HS speakers

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...

May 22, 2008 | Sony STR-DB780 Receiver

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Sony rm-pp411 av system remote not connecting to str-k840p amplifier

The problem might not be your remote. It could be your IR sensor in the reciever.

Apr 10, 2012 | Audio Players & Recorders

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Sony STR-DB780 5.1 Channels Receiver.. I have a problem, i cant get the optical to work.. I can see that on the backside of the reciver "where u put the optical cabel" it kinda not lighting up.....

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!

May 31, 2011 | Sony STR-DB780 Receiver

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I live in au and would like to replace lost playmobil parts

Probably your best chance of finding replacments is here:

AUSTRALIA Childsmart Pty Ltd Phone: 00 61 2 9317 4211 62 - 66 Mentmore Avenue e-mail: Rosebery NSW 2018 Contact: Mr. Graham Berman Australia

Note the contact email and phone numbers. If anyone can help you that is the most likely source. You may even want to contact PlayMobil US using the same page and clicking on contact.

The other avenue is hit and miss and by chance via ebay AU
Note the LH column for other play sets.

Thanks for choosing FixYa,

Dec 09, 2010 | Toys

1 Answer

Hello! I have problem with my STR DB780. There is no sound out from the amp.(All 5 chanels) I have checked for bad conections on the main bord,(Relay,voltreg. IC801.802) I have supply 52 Volt to the end...

Could we back up a bit?

What started this? Did it ever work? Do you know there is a program flowing through the receiver that could be amplified? Try FM. It's internal and so there are no connections to get wrong. What happens with the speaker setup routines?

Staying with FM stereo:

Still no sound at the speakers? Run an audio cable pair from one of the Video 1 or 2 Audio Out pairs to an input on, say, your TV so you can use its speakers as a diagnostic tool. Assumes you know how THAT works.

Anything there?

NO: Then there are no audio signals circulating inside the unit. Give up on the amplifier diagnostics and get into the preamp area.

YES: You have audio inside, just need to get it to the amps. Check for mispositioned Tape switches, Mute button.

Mar 18, 2010 | Sony STR-DB780 Receiver

1 Answer

I am looking for a manual for the sony str-db 780 amp but in english can you please help me

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

Hope this helps

Jun 30, 2009 | Audio Players & Recorders

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Please download user manual of STR-DB870 from Sony Support.

Nov 20, 2008 | Sony STR-DB780 Receiver

1 Answer

Sony str bd-930 connected via digital input to ps3,no sound..

on the ps3 in audio options you have to set it so that the sound is going through the optical and not the hdmi. this it was I think the problem is.

Nov 16, 2008 | Sony STR-DB930 Receiver

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