No Power In Toshiba LED TV Repaired
The complaint of this Toshiba LED TV was no power. The first thing to do is to unscrew it and remove the cover.
Once the cover was removed, the first component I checked was the main fuse.
I found it to be open circuit. I continued to check on the surrounding components which include the power IC, Diodes, resistors and there was no short circuit found-see the photos below:
Since there was no other bad components found so I had to connect a light bulb across the main fuse holder. I can actually solder it from behind the fuse terminal but soldering in front is easy for you to see.
Power was applied and the bulb lighted up for a while then went dim which was a good sign of no shorted components in the power board.
I then put in a new main fuse and connected the power board to the mainboard and powered On, I could see the display-see the result below:
If you want to know more about LED and LCD TV repair, you can visit the links below:
https://www.jestineyong.com/repairing-guides-by-kent/
https://www.jestineyong.com/repairing-guides-by-damon-morrow/
This article was prepared for you by Suranga Bandara who owns an Electronics shop in Anuradapura, Sri Lanka.
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You can read his previous article in the link below:
https://www.jestineyong.com/souer-ac-inverter-repaired/
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20 Comments
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Martin
August 11, 2015 at 6:07 pm
Well done.
I only wish that my TV repairing adventures could be as simple and straight forward as this. 🙂
Allan
August 11, 2015 at 6:47 pm
A real quick fix, but I full heartedly agree with Martin's comment. Great stuff Suranga!!!
Tyrone
August 11, 2015 at 7:11 pm
It not very often that repair adventures are this simple and straight forward therefore when they come it is quite welcomed.
KYBOSH
August 11, 2015 at 7:43 pm
So what was the problem? A bad main fuse? I thought that was the first thing that was tested ...
Humberto
August 14, 2015 at 11:46 pm
Hi, the fuse was maybe blown due to lifespam
KYBOSH
August 11, 2015 at 7:48 pm
… Sorry I just saw that the fuse was open. Good job looking for faulty components that might have caused the blown fuse!
Mark Tembo
August 11, 2015 at 9:50 pm
Thanks, the article has been well-prepared.
bijoy
August 11, 2015 at 11:10 pm
Very good.bijoy India Kerala.
Robert Calk
August 11, 2015 at 11:31 pm
Good job, Suranga. If you put croc clips on the wires of your light bulb, you can just clip them on the fuse holders and not need to solder them.
Yogesh Panchal
August 12, 2015 at 12:24 am
Congratulations! for quick fix.
reza
August 12, 2015 at 12:13 pm
hi Suranga
very good
carlos a ortega
August 13, 2015 at 8:27 am
well done, but a good test is to check amperes draw by the tv set and compare with the label on the set.
CHRISSY
August 13, 2015 at 2:36 pm
Thanks for dis knowledge ....... it plays a major role in my life.
mustabz
August 13, 2015 at 8:14 pm
some one please advise me how i can get LD1117 regulator to kla with no hussle?
am stuck witha venus 32" cant get out of standby mode.
Aziz
August 13, 2015 at 8:32 pm
Dear Mr.Yong
hello and thanks for all useful electronic articles repairing guides
you are one of the best instructors in the world, God bless you
sincerely yours
Aziz
Jestine Yong
August 14, 2015 at 7:00 am
HI Aziz,
You are welcome and need to thanks to those who have contributed the articles too.
Jestine
Humberto
August 14, 2015 at 11:49 pm
Simple repair, but anyway it's another device saved from the dump.
farhad rigi
August 18, 2015 at 12:22 pm
thank you
paul
November 16, 2015 at 4:07 pm
Pls sir I want to learn laptop repairs
suwit
March 1, 2022 at 11:14 am
can you do me a favor?
what is the value of C805