Haier HL19LE2 Service Manual

If your Haier HL19LE2 is not turning on, first check if the AC input is properly connected and if the power is turned on. If the power is on, check the power board output to see if it is 5.2V. If the output is not 5.2V, you may need to replace the power board. If the output is 5.2V, check the IR board and LED. If the IR board is faulty, you may need to replace it. If the issue persists, you may need to replace the main board.

To troubleshoot the power issue on your Haier HL19LE2, follow these steps: 1. Check if the AC input is properly connected and if the power is turned on. 2. If the power is on, check the power board output to see if it is 5.2V. 3. If the output is not 5.2V, replace the power board. 4. If the output is 5.2V, check the IR board and LED. 5. If the IR board is faulty, replace it. 6. If the issue persists, replace the main board.

First, check if the TV is under control and power on/off by remote control and power key. If it is, check if the backlight is 'On'. If the backlight is not 'On', check the LVDS cable and ensure the B/L signal is available. If the signal is not available, reinsert or replace the LVDS cable. If the Panel Vcc is not 5V, replace the main board. If the power board output is not 16V, replace the power board. If none of these steps resolve the issue, you may need to replace the main board or the panel.

The HDMI1 port on the Haier HL19LE2 is connected to several components including resistors (R504, R513, R514, R503, R505, R515, R523, R521, R520), capacitors (C502, C504, C501, C503), diodes (ZD503, ZD502), and transistors (Q504, Q505). These components are crucial for signal conditioning and power management.

The fuse F901, labeled as 84G 56 1 C, is a protective component in the Haier HL19LE2. It is designed to safeguard the circuit by breaking the electrical connection in case of an overcurrent or short circuit, preventing potential damage to the device.

The LEDs in the Haier HL19LE2 are used to indicate various statuses and functions of the device. They are powered by specific voltage levels, such as +5.2V and +16V, and are connected to different parts of the circuit to provide visual feedback on the device's operation. For example, they might indicate power status, mode selection, or error conditions.

The manual lists several LEDs (LED1, LED2, LED3, LED4, LED5, LED6) but does not specify their functions. These LEDs are likely used to indicate the status of various components or functions of the device, such as power status, operational modes, or error codes. For specific functions, refer to the detailed user manual.

The RT8482GS IC senses the lowest output voltage of the RT8326 and then controls the RT8452 boost Vout. This mechanism ensures that the output voltage is regulated and maintained at the required level.