- LED TV No Sound Repaired
- No Display In Samsung 32″ LED TV Repaired
- No Power In LED TV Solved
- How To Repair Toshiba LED TV With No Power Symptom
- Samsung LED TV Auto Change Channel Repair
- How To Repair LED TV Backlight Problem – No Picture
- How To Repair LED TV No Picture- Singer Brand
- LED TV Repair- Cheap Replacement Parts
- Not Common To See Dual Super Barrier Rectifier Breakdown When Under Load
- How To Solve No Power Problem In Haier LCD LED TV Repair
Samsung LED TV Auto Change Channel Repair
Customer sent to me this 32″ LED TV with the complaint of auto change channel (and power LED blinks) even though you did not press on the remote control and the front panel control.
This means the problem has nothing to do with the remote control. In the above picture you see channel 14 but actually it was counting/running 15 then 16 and etc. Below photo is the LED TV model LA32D400E1MXXS.
Once the cover was opened, I could see few boards but the most important boards are the mainboard and the power board.
In order to confirm is the mainboard fault or the front panel touch keys fault, I had to remove the touch keys connector as shown below:
Once the touch keys connector was removed and power On, the problem disappeared. If you look at the photo below, there was no running channel. From this test I concluded that it was the front panel touch keys board problem.
When I opened up the touch keys board I got a shocked to see rusted circuit board. Probably it was caused by dripping water and it takes time to develop into this kind of rusted condition.
I then cleaned up the circuit board and reflowed the IC and the SMD components. Once done I powered up the TV and no longer can see auto change channel in the screen. Problem solved.
This article was prepared for you by Suranga Bandara who owns an Electronics repair shop in Anuradapura, Sri Lanka.
Please give a support by clicking on the social buttons below. Your feedback on the post is welcome. Please leave it in the comments. If you have electronic repair articles to share with us, please contact us HERE.
P.S- If you enjoyed reading this, click here to subscribe to my blog (free subscription). That way, you’ll never miss a post. You can also forward this website link to your friends and colleagues-thanks!
Note: You may check out previous post about fixing active speaker in the below link: