Sony Rm-adu138

If your Sony RM-ADU138 AV system is turning on by itself since you connected it to your TV, there are a few possible reasons why this might be happening:

1. CEC settings: Your TV and AV system might be communicating through the CEC (Consumer Electronics Control) protocol, which allows devices to control each other over HDMI. If your TV's CEC settings are set to turn on the AV system when the TV turns on, this could be causing the AV system to turn on unexpectedly.
2. Remote control interference: Another possibility is that your TV's remote control is interfering with the AV system's remote control. This could be happening if the remote controls use the same frequency or if they are sending signals that are accidentally triggering the AV system.
3. Power issues: It's also possible that there is an issue with the power supply or power settings of the AV system that is causing it to turn on by itself. For example, if the AV system is set to turn on automatically when it receives power, this could be causing it to turn on when you turn on your TV.

To troubleshoot this issue, try the following steps:

1. Check CEC settings: Go to your TV's settings menu and check the CEC settings. If the AV system is set to turn on when the TV turns on, try disabling this setting and see if the AV system still turns on unexpectedly.
2. Change remote control frequency: If the remote control interference is causing the issue, try changing the frequency of one of the remote controls. For example, you could try replacing the batteries in the TV remote control or using a different remote control for the AV system.
3. Check power settings: Check the power settings of the AV system and make sure that it's not set to turn on automatically when it receives power. If it is, try changing this setting and see if the AV system still turns on by itself.

If none of these steps resolve the issue, you may want to contact Sony customer support for further assistance.

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Regards,
Sonu
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