What to do if my LG 42LY750H fails to power up?
If your LG LED TV fails to power up, try replacing Q2407. If that doesn't work, replace the cable or the power board. You might also need to check the LCD module.
How to troubleshoot HDMI audio input problems on LG 42LY750H?
If you are experiencing HDMI audio input issues with your LG LED TV, try replacing JK3301 and JK3302. If the problem persists, replace L5402, L5403, L5404, and L5405.
How to fix HDMI video issues on LG 42LY750H LED TV?
If you're experiencing HDMI video issues with your LG LED TV, start by replacing JK3301 and JK3302. If the problem persists, replace IC100. If problems continue after these steps, the main chip (MTK) may have issues, requiring a thorough check of all paths to decide whether to replace the MTK.
What to do if there is no OSD on LG LED TV?
If there is no OSD on your LG LED TV, check switch SW8700. If the issue persists, check the IIC line or replace IC8700. You may also need to check the IR board, replace the power board, or re-download NEC Micom.
How to troubleshoot AV video problems on LG 42LY750H LED TV?
If you are experiencing AV video problems with your LG LED TV, replace JK4600. If the issue continues, this may indicate a significant problem with the main chip (MTK). Thoroughly check all paths and consider replacing the MTK if necessary.
What to do if digital RF is not working on LG 42LY750H?
If you're having trouble with digital RF on your LG LED TV, try replacing IC2404. If that doesn't solve the issue, replace TU6500, X100, or IC105.
How to fix analog RF audio issues on LG LED TV?
If you are experiencing issues with analog RF audio on your LG LED TV, try replacing the tuner. If the problem persists, replace L5402, L5403, L5404, and L5405, or replace IC5400 or IC105.
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