Haier HLC15E Service Manual

To adjust the bus control on your Haier HLC15E, refer to the 'Bus Control Adjustment' section of the manual. This section provides detailed instructions on how to properly adjust the bus control settings.

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.

If the set does not turn on and Pin3 U13 does not have a 350Khz switch signal, you should check the MCU for power supply and reset issues. If the MCU is fine, change the LDO. If the LDO is fine, check U13/MP1410ES & D17/IN5822. If these components are fine, check L9/47μH for high or low voltage.

To troubleshoot a white screen issue on the Haier HLC15E, follow these steps: 1. Check the power supply for the panel. 2. Check the voltage of Q24 (0~3.3V, 5V, or 12V) according to the voltage. 3. Check the voltage between U25/SM5964 3th and Q24 or check U25. 4. Check the voltage of Q24. 5. Check the signal output of U5/RTD2023B. 6. Check U5 for power supply and time circuit issues. 7. Check the circuit between CN8 and CN9. 8. Check the LCD or Panel Connector.

If the exceptional screen indicates a problem with the LCD, you should first check the output net and the connector. If that does not resolve the issue, check U5 for the power supply and timer circuit. If the problem persists, you may need to change or mend the part circuit.

To troubleshoot the 'No Audio' issue on your Haier HLC15E TV, follow these steps: 1. Check the audio and PC AV settings. 2. Check the signal output of SAW2/M9370M30 PIN1. 3. If there is no signal, check the net between SAW2. 4. Check U21 PIN29,30 and Pin1 and C133/0.01μF. 5. Check the power supply of U21 and C133. 6. If all else fails, consider changing U21.

If the voltage at T1/TDQ-6H3PIN6 is not 5V, you should check the voltage at T1 PIN3 for 0V and T1 PIN9 for 33V. If these voltages are correct, check the I2C signal at T1 PIN4,5 and the signal at T1 PIN11. If all signals are correct, examine and repair the RF device. If the issue persists, check the net between T1 PIN11 and U21 PIN24,25 for the power supply of U21. If necessary, change T1/TDQ-6H3 and examine the I2C net and the circuit connected with U25/SM5964. Finally, examine and repair the power supply net and R267/0Ω.

If your Haier HLC15E is missing color, you should check the RGB circuit and the circuit for the power supply of U21.