Supposed to be not worth to repair but…….
This Philips DVD Player came in with the complaint of no power. This DVD player was supposed to be not worth to repair because it was sent to other repairer before and he could not repair it. Usually, when an equipment that had been sent to other people to fix and they can’t fix it, there are chances you can’t repair possibly due to missing components (they took out the parts), installed the component the other way round, broke the circuit track, board messy due to no cleaning and etc.
In the photo below, you could see that the screw were not tightened.
Once I have tightened the screw and powered on, there was no output voltage from the power supply (the main fuse did not blow). You need to take note that a bad mainboard also can cause no display symptom in the front panel LCD in which you thought was no power due to faulty power supply.
I flipped the power supply board and saw the previous repairer soldered a 472 2 Kv capacitor at the back of the board.
It suppose to be soldered on top (front side) and not behind the board. Look at the two photos below:
When I checked on the 472 2 kv capacitor I found it to be defected. I proceed to check on the components in the power primary side and found two more bad filter capacitors (470uf 250Volt)
With the replacement of 3 bad components, the DVD player came back to life again.
Conclusion- If the power supply board have burnt IC and FET (can’t see the part number) and have not been repaired by anyone before then I will use Jestine Yong’s power supply modification ebook information to solve the problem. Ok see you again in the next article.
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 the above article, 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 his previous post in the below links:
https://jestineyong.com/lg-led-tv-display-problem-solved-wit-a-simple-cut/
(70)Dislikes
(0)
12 Comments
Leave a Reply
Albert van Bemmelen
February 28, 2020 at 1:10 am
It always a good thing to examine the reason why a device is not working for ourself, no matter what a previous repair engineer or a customer said. They always can be wrong and possibly made a mistake we have to confirm before scrapping a pefectly good fixable device. So another pro job as always!
Allan
February 28, 2020 at 3:43 am
Hi,great stuff my brother. It can become a headache where other people tried to do repairs.
I appreciate to know there's people like you around. God Bless and many thanks.
Mark
February 28, 2020 at 6:17 am
Well done Suranga,
Sometimes the hardest ones to repair are where someone else has had a try at repairing it first.
Jose
February 28, 2020 at 11:34 am
todo muy bien gracias
=====================
everything is fine thanks
Raj
February 28, 2020 at 11:40 am
Great. Thanks for sharing
Parasuraman S
February 28, 2020 at 4:51 pm
Good job there, Suranga! Well done!
Suranga bandara
March 1, 2020 at 1:16 am
Okay Thanks for All Feed back and Comments
Michael Lindsay
March 2, 2020 at 11:28 am
Well done!!! I've read so many successful repair jobs from you, man. Thanks for the tips.
Yogesh Panchal
March 2, 2020 at 6:01 pm
Well done! suranga.
The equipment which already tried by someone for repair is really challenging job.
Amir Mukhtar
March 4, 2020 at 1:32 pm
Great work
Thanks you for your share.
Amir Mukhtar
Humberto
March 12, 2020 at 4:37 am
Great repair, Suranga. Congrats.
ulises aguilar pazzani
April 17, 2020 at 11:36 am
again Mr Suranga another good fix keep it up god Bless