Don't Miss

AC/DC Adapter LED On, But Does Not Take Load

By on March 26, 2019
power adapter repair








ac dc power adapter repair

This AC/DC Adaptor Model 65W-TF03 was brought to me with the complaint that LED light is on, but does not take load. After opening the unit, and removing the heat zinc which covers most of the top area, I noticed that one of the capacitors in the secondary had ‘called it a day!’

how to repair power adapter

how to fix power adapter

Replaced it and checked for any other defective components both in the primary and secondary. Could not find any.

Touched up all the solder joints again to make it fresh. Cleaned the PCB well and applied power through a series bulb. Adapter worked perfectly well.

power adapter fixed

how to repair power adapter

Another job accomplished and added to my SL (satisfaction list).

This article was prepared for you by Parasuraman Subramanian from India. He is 69 years old and has more than 30 years’ experience in handling antique equipment like Valve Radio, Amps, Reel Tape Recorders and currently studying latest tech-classes conducted by Kerala State Electronics Technicians’ Association. He has done graduation in BBA degree, private diploma in Radio Engineering and retired as MD of a USA company. Presently working as Consultant to Hospital and other institutions.

Please give a support by clicking  on the social buttons below. Your feedback on the post is welcome. Please leave it in the comments.

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!

You may check on his previous repair article below:




  1. Robert Calk Jr.

    March 26, 2019 at 10:51 pm

    Good job, Parasuraman.

  2. Albert van Bemmelen

    March 26, 2019 at 11:47 pm

    Short but straight to the point repair! Beats me why someone had to press the dislike button again? And I noticed that you may have gotten a better camera these days because the photos are sharp and clear!

  3. Henrique J. G. Ulbrich

    March 27, 2019 at 4:24 am

    Very good (and quick) maintenance Parasuraman. Thanks for sharing. Just a doubt: in one of the pictures there is a lead in one of the el-caps. Of course, the caps are all radial-type, but this lead suggests it´s an axial one. What is really that lead?

  4. Humberto

    March 30, 2019 at 1:42 am

    Great repair. Continue sharing your experiencies

  5. Yogesh Panchal

    April 6, 2019 at 3:50 pm

    Good job! Sir


Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.