Haier L32B1120 Service Manual

To perform a simple check on your Haier L32B1120, refer to the section 9-1 in the service manual. This section provides guidelines for basic troubleshooting steps.

To safely handle ES devices, you should first drain any electrostatic charge on your body by touching a known earth ground or using a discharging wrist strap. After removing an electrical assembly equipped with ES devices, place it on a conductive surface like aluminum foil. Use a grounded-tip soldering iron and an anti-static solder removal device for any soldering or desoldering tasks.

The Power Board in the Haier L32B1120 is responsible for supplying power to the Main board and the Panel.

The Haier L32B1120 uses an AC power source. It comes with a polarized line cord that should be inserted into a standard polarized AC outlet.

If the unit is not responding or functioning properly, simply unplug the unit from the AC outlet and plug it back in. The unit should return to normal operation.

The 'MUTE' function in the Haier L32B1120 is used to control the audio output. When activated, it silences the audio, and when deactivated, it allows the audio to play. The MUTE function is controlled by various components such as C736, C737, and R292, which are part of the MUTE circuit.

The Haier L32B1120 offers several audio input options, including LINE_IN for multiple channels (LINE_IN_0L, LINE_IN_0R, LINE_IN_1L, LINE_IN_1R, LINE_IN_2L, LINE_IN_2R), IPOD inputs (IPOD-Rin, IPOD-Lin), and DVD inputs (DVD_IN_R, DVD_IN_L). These inputs allow for various audio sources to be connected to the TV.

To update the software on your Haier L32B1120 TV, follow these steps: 1. Prepare a USB memory stick with the firmware file. 2. Turn on the TV and insert the USB memory stick. 3. Press the 'source' button on the remote, then enter '2-5-8-0' to access the software upgrade menu. 4. Select 'SW Upgrade' and press 'ENTER'. 5. Choose 'Yes' and press 'ENTER' to start the update. 6. Do not turn off the TV during the update process. 7. After the update is complete, remove the USB memory stick and reset the TV.

A white screen display on your Haier L32B1120 TV could be due to a surge current or EDS (Electrostatic Discharge). This issue might be related to the LCD panel or the Vcom circuit.

If your Haier L32B1120 TV is displaying abnormal colors, it could be due to improper capacitance causing crosstalk inside the LCD panel. Additionally, it could be due to the chip losing action, IC short, bad jointion, or a bad connection between the panel and VSC.