Question about Sony STR-DE595 5-Channel Amplifier

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Amp not responding to remote

My amp is not responding to my remote. The batteries are fine, and the other things that the remote is programmed to function (DVD, TV, VHS etc) all respond to the remote - it's literally just the amp that won't. My amp is about 5/6 years old - I'm not sure if it is exactly the same model as the one shown here - it is Dolby Digital 5.1 and DTS, but not dolby digital EX. I think the problem started when i took the remote to my mate's house to try to get rid of the permanent "AV2" that was displayed on his Ferguson TV. The idea was to programme the remote to his TV, and then amend the display for him as he has lost his own remote, so constantly has "AV2" in the corner of the screen. All i did was programme his TV into my remote, but can't understand why this would affect my amp responding. Please help.

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Re: Amp not responding to remote

Make sure that your remote is on the same av channel as the amp

Posted on Jan 30, 2007

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I'd love to have more information to go on, but I can give you a few things to check:
If there is a traditional volume control that is motorized, you will see the volume knob start moving on its own after you start it up. If that is the case, you'll need to have someone look at the motor control circuit. Luckily these are almost so generic that parts would be as common as replacing fuses.
If there is a volume knob that is an encoder, it may be faulty. How to tell if it is an encoder? Easy. If it will spin continuously with no extra effort, in both directions, it is an encoder. If in fact there is an encoder present underneath the knob, and the amp is responding to the remote correctly, it may be as simple as someone replacing the encoder.
If there is no volume knob at all, just a couple buttons to press, one for up, one for down, there are issues in that circuit that will need to be addressed.
If the volume control is only from the remote, and it keeps climbing on its own until you turn it down, there is a digital volume control chip that controls the volume. Unfortunately, anything in the circuit from that chip itself, all the way back to the sensor for the remote, could be faulty.
HOWEVER, do not despair yet, there may be another area to check. Turn the amp on, then IMMEDIATELY take the batteries out of the remote. If the volume stops climbing right there and then, guess what? :) Time for a new remote, or have someone take a look at the one you have if it is an expensive unit. One more related thing to check: If there are any other remotes in the room, remove them, or any other possible sources of infrared light. Alternately, take a piece of heavy black electrical tape and cover the sensor for the remote, and turn the amp on. If it behaves normally, something else in the room is "telling" the amp to increase volume. If any of these tests produce results no different from what you've experienced so far, the fault is in fact inside the amp.

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