Page 160 - Electronic Mechanic - TP - Volume - 2

ELECTRONICS MECHANIC - CITS

EXERCISE 159: Demonstrate the faults in AV receiver &

rectify

Objectives

At the end of this exercise you shall be able to
• to demonstrate various fault in AV receiver &rectify
• to demonstrate various indicators of AV receiver &rectify.

Requirements

Tools/Materials
• Combination plier (250mm) - 1 No.
• Screw driver set (150mm) - 1 No.
• Wire stripper - 1 No.
• AV receiver - 1 No.
• Connecting wire - as reqd.

Procedure

AV receiver issues and their potential solutions
Check the Power Source: Ensure that the receiver is plugged into a working power outlet. Try a different outlet
if needed and ensure the power cable is securely connected.

1 Remote Control Issues
Check Batteries: If the remote isn’t working, replace the batteries and ensure they’re inserted correctly.
Reset Remote Control: Some remotes may need to be reset. Consult the receiver’s manual for instructions
on how to reset the remote control.
2 Bluetooth or Network Connectivity Issues
Update Firmware: Ensure that the receiver’s firmware is up-to-date. Some issues can be resolved through
firmware updates.

Reconnect Bluetooth Devices: If using Bluetooth, disconnect and reconnect your devices. Ensure the
receiver is set to the correct Bluetooth input.
Audio/Video Sync Issues

Adjust Audio Delay: Some AV receivers allow you to adjust audio delay to sync with video. Explore the
receiver’s settings for audio delay or lip sync adjustments.
3 Overheating

Check Ventilation: Ensure proper ventilation around the receiver. Clear any obstructions near the vents
and consider using a fan to improve airflow.
Reduce Volume or Power Output: High volumes or excessive power output can lead to overheating.
Reduce the volume or consider using an external cooling solution.
4 Speaker Protection Mode
Check for Short Circuits: If the receiver goes into protection mode, inspect speaker wires for short circuits
or loose strands. Disconnect speakers one by one to identify the problematic speaker or wire.
Remember to consult your specific AV receiver’s manual for detailed troubleshooting steps. If the issue
persists, professional assistance may be necessary.

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