Haier LET32/40T900 Service Manual

To use the remote control, refer to section 2.1 of the manual titled 'The Use of Remote Control' on page 5.

For instructions on how to connect the TV, refer to section 2.4 of the manual titled 'How to Connect' on page 36.

First, check the audio source connection and ensure the TV system is set correctly. If the connection and system are correct, try reinserting the audio cable or changing the TV system. If the issue persists, check if the TV is muted, adjust the volume, or enter the menu to reset. If none of these steps work, enter factory mode to do a 'Reset'. If the problem still exists, check the cable between the speakers and the main board. If the cable is faulty, replace it. If the cable is fine, check the speaker resistance value to see if it is within the specified range. If the speaker resistance is not in spec, replace the speaker. If all else fails, replace the main board.

To troubleshoot audio output issues, check the components related to the audio output, such as R1022, C1022, and D1064, which are involved in the audio signal path. Ensure all connections are secure and components are functioning correctly.

The HDMI switch and HDMI1/HDMI2 components are used for handling high-definition multimedia interface (HDMI) inputs. The HDMI switch allows the device to select between multiple HDMI sources, while HDMI1 and HDMI2 are the specific input ports for connecting HDMI devices. The TDA19998HL/C1 component is likely the HDMI transmitter or receiver chip that manages the HDMI signal processing.

The SCART 1 (Full SCART) input on the Haier LET32/40T900 supports CVBS, SV, RGB, and TV OUT, allowing for various types of video and audio connections.

You should remove the battery from the remote control handset when it is not to be used for a long period to prevent any potential issues.

You should avoid placing the remote control on a wet object, under direct sunlight, or near heat sources.

If the audio source and system are correct, check if the TV is muted and adjust the volume. If the TV is not muted and the volume is set correctly, enter the menu to reset the settings. If the issue persists, enter factory mode to perform a 'Reset'. If the problem still exists, check the cable between the speakers and the main board. If the cable is faulty, replace it. If the cable is fine, check the speaker resistance value to see if it is within the specified range. If the speaker resistance is not in spec, replace the speaker. If all else fails, replace the main board.

To adjust the color temperature for the Ypbpr source to 'Normal', enter the factory mode, select 'Source' as Ypbpr and 'Color Temp' as Normal. Then, adjust the gain of RGB to meet the specifications: TIM = 314, PAT = 141 (80IRE). The target values are x = 0.285±0.020, y = 0.293±0.020, and brightness >300cd.