Haier LE48M7000A Service Manual

To change the TV channel on the Haier LE48M7000A, use the CH+ and CH- buttons on the front panel to go up or down the channels, respectively.

The DDR3 2G bit 1600MHz specification indicates that the device uses DDR3 memory with a capacity of 2 gigabits and an operating speed of 1600 MHz. This specification is crucial for understanding the performance and compatibility of the memory module within the device.

The components labeled as D606, D607, and D608 are located close to the Mstar IC and are likely related to the video processing or signal handling of the device.

The Haier LE48M7000A uses several voltage converters for different voltage levels. These include GH27G (U2 and UP3) for converting 5V to 3.3V, GH23H (U3) for converting 5V to 2.5V, RT7240 (U11) for converting 5V to 1.22V, and SY80X (U5) as a Buck converter.

First, verify if the power has a 5Vstb output. If not, change the power supply. If yes, check if CN4 Pin3/4 has a 5V input. If not, change the power board. If yes, check if CN2 Pin1 has a 12V input. If not, change the power board. If yes, verify if the DC/DC converters have the right output. If not, change the corresponding DC/DC converter. If all checks are correct, change the software. If problems persist, change the mainboard.

To troubleshoot the power board, first check if CN4 Pin3/4 has a 5V input. If not, the power board may need to be changed. If yes, check if CN2 Pin1 has a 12V input. If not, the power board may need to be changed. If both checks are correct, the issue may lie elsewhere, such as with the DC/DC converters or the mainboard.

To determine if the power board is broken, first check if the power cord is properly connected to the outlet or the power board. If it is, then check if the power board is outputting 5V and 12V. If it is not, you may need to replace the power board.

If your TV is not turning on, first ensure that the power cord is securely connected to both the outlet and the power board. If the connection is secure, check if the power board is outputting 5V and 12V. If it is not, you may need to replace the power board. Additionally, check if the main board, LVDS wire, and panel are in good condition.

The 'Black Screen' issue on the Haier LE48M7000A can be caused by the chip losing action, IC short or bad jointion, or a bad connection between the panel and VSC.

The 'Crosstalk' issue in the Haier LE48M7000A can be caused by improper capacitance, which brings crosstalk inside the LCD panel.