- 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
- Singer 32″ Skyworth LED TV With Dim Display Repair
No Power In LED TV Solved
The complaint of this UNIC LED TV was no power. So the first thing to do is to remove the cover as seen from the photo below:
Once the cover was removed, I could clearly see two important circuit boards which is the power supply and the main board.
Some repair techs just call it as motherboard.
From visual inspection I saw one of the legs of the Thermistor was broken but the bottom joints were still intact. When I checked it using Ohmmeter it showed open circuit. By right it should show resistance between 3 to 30 Ohms depending on what part number of the Thermistor you are checking. The main fuse and corresponding components were checked to be good.
Since I do not have the exact part number, I used a replacement Thermistor from a junk LED TV power board. Once the replacement Thermistor is fixed and powered On, the power supply came back and I could see the display in the TV-see the photo below:
Conclusion- If you want to be good in electronics troubleshooting, your testing components has to be strong. If you can’t accurately or do not know how to test components then chances for you to solve an electronics problem will be very slim. All professional repairers know how to test and check components and they can check it very fast. If you want to know how to check components fast, i can recommend you to get Jestine Yong’s ebook Here.
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: