- 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 Display In Samsung 32″ LED TV Repaired
This Samsung 32″ LED TV came in for repair with the complaint of no display. When i used a torch light to shine at the panel, I could see faint picture (TV Channel logo). This means the power section, mainboard and even the panel are good.
The problem is either the LED backlight or the LED driver circuit. The photos below are the mainboard and power supply board. The LED driver board is built into the power supply board.
I have checked the dc voltage to the LED backlight and found that the DC voltage came and dropped back to zero. This indicated there was problem with the backlight LED. If one of the LEDs in the backlight strip have problem the voltage will drop.
Next, I dismantled the panel and you must take great care of it otherwise if the TAB bonding breaks, it would be difficult to repair it unless if you have a special machine for this.
I checked each LEDs and found only one that was not lighted at all when test it with meter set to diode mode.
I do not have the ready part for this LED so I installed a used LED from another junk LED TV .
Once the LED is fixed and powered On, take a look at the photos below:
Conclusion- It is not tough to repair LED TV with dim display problem. Just follow my procedure and I believe you can repair it very fast. If you want to be good in repairing LCD/LED TVs, you can check out Kent’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: