Haier 42D3500 Service Manual

To change the input source, press the INPUT button on the front panel. This will toggle between all available input sources.

To turn on the TV, press the POWER button on the remote control and ensure it is aimed towards the remote sensor on the TV.

The USB Shortcut button on the remote control allows you to quickly access USB-connected devices and their content.

The panel settings you can adjust include LVDS Bit Mode, LVDS MAP, LVDS ODD/Even, Backlight, 6MX0 LVDS Map, 6MX0 Channel, 6MX0 Mirror, and 6MX0 Demo. You can also reset the panel setting date and update the 6MX0 settings.

First, verify if the television is properly plugged in and receiving power. Check if the electricity supply is available. If everything is connected correctly and the issue persists, try restarting the television by disconnecting it from the power supply for 10 seconds and then reconnecting it.

The TPA3110D2PWPR (UA1) is the Audio Amplifier in the Haier 42D3500. It is responsible for amplifying the audio signals to drive the speakers.

The Main Flash Memory in the Haier 42D3500 is the GD25Q32BSIG (UF1).

First, verify if the speakers are broken. If the speakers are not broken, check if the main board has the right input according to the source you are connecting (TV/COMPONENT/AV/VGA/HDMI etc.). Then, check the corresponding audio input circuit. If the issue persists, verify if UA1 has the right output and power. If UA1 is functioning correctly, check CN17 input. If all else fails, you may need to change the mainboard.

If the speakers are not broken, check if the main board has the right input according to the source you are connecting (TV/COMPONENT/AV/VGA/HDMI etc.). Then, check the corresponding audio input circuit. If the issue persists, verify if UA1 has the right output and power. If UA1 is functioning correctly, check CN17 input. If all else fails, you may need to change the mainboard.

If you are experiencing a black and white picture for some channels, first verify if the problem exists on other channels. If it does not, check the picture and sound system of the problematic channel. If the issue persists, change the channel to the correct sound system (PAL-BG SECAM/L) and refer to the relative instructions in the manual for color adjustment. If you still have problems, update the software and reboot the device, or consider changing the mainboard.