Haier HLE20BB Service Manual

The remote controller functions are described on page 10 of the manual. Please refer to that section for detailed information on how to use the remote controller.

Troubleshooting information is provided on page 26 of the manual. Please refer to that section for guidance on resolving common issues with the Haier HLE20BB.

Yes, you can connect a PC to the Haier HLE20BB TV for display purposes. Use the 'D-SUB Input' (15PIN analog output connector) to connect the VGA output from your PC's display card to the TV. Additionally, connect the PC audio output to the 'PC Audio Input' jacks for audio.

It is advisable to disconnect the AC power cord from the AC outlet when the product is not used for an extended period of time.

Avoid exposing the main unit to direct sunlight and other sources of heat. Do not stand the television receiver directly on other products which give off heat, such as video cassette players or audio amplifiers. Do not block the ventilation holes in the back cover, as ventilation is essential to prevent failure of electrical components. Additionally, do not squash the power supply cord under the main unit.

To mute the TV, press the 'MUTE' button on the remote control.

To install batteries in the Haier HLE20BB remote control, follow these steps: 1. Slide open the cover of the battery compartment on the back of the remote control. 2. Load two AAA alkaline batteries in the compartment, ensuring the plus and minus poles are aligned with the respective marks. 3. Replace the cover of the battery compartment.

The 22uF-25V-±20%-4*7-105℃ capacitor is likely used for filtering and smoothing the power supply to ensure stable voltage levels in the circuit.

The 100Kohm-0603-±5%-1/10W resistor is likely used for current limiting or voltage division in the circuit, helping to regulate the flow of electricity and protect other components.

If your Haier HLE20BB is not turning on, first check F1 for 12V. If there is no 12V, check F1 and CN13. If there is 12V, check E33 (470μF/25V) for 5V. If there is 5V, check the power output for LDO. If there is no power output, check F1 for a shortcut. If there is a shortcut, check the power supply net. If there is no shortcut, check Pin3 U13 for a 350Khz switch signal. If there is no signal, check the MCU for power supply, reset, and crystal. If there is a signal, check U13/MP1410ES & D17/IN5822. If there is a high voltage, check L9/47μH. If there is a low voltage, check U13/MP1410ES PIN5 & U13.