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Restored An F&D USB Video Player AC Adapter Model F100

By on August 5, 2023
Power adapter repair








AC Adapter of my USB Video Player, F&D F100 : This adaptor was found dead one day, when I tried to play my favorite Sherlock Holms movie. On opening the adaptor, I saw capacitor bulged and dislodged from its place. The legs of the two pin AC inlet were also worn out and in dangerous condition. (We, technicians would attend to a problem in-house only when cornered! (LOL).

how to fix power adapter

I replaced the three electrolytic caps and retouched the board very well, and provided a new Adaptor case, which had better thick pins for AC input.

It was giving perfect output on doing a pre-test:

power adapter repair

Then refit the PCB inside the new case and checked it connecting it to the player


and found it to be working very well.

fixing a power adapter

Mission accomplished and satisfaction got added to its collection.


This article was prepared for you by Parasuraman Subramanian from India. He is 72 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.

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You may check on his previous article on Noisy Pots Replaced In AHUJA Public Address System Model SSB-60M




  1. Waleed Rishmawi

    August 5, 2023 at 4:52 pm

    ah, the joy of replacing capacitor goes way thanks for sharing and have a blessed day.

    • Parasuraman S

      August 5, 2023 at 10:58 pm

      Many thanks, dear friend!

  2. Albert van Bemmelen

    August 5, 2023 at 5:57 pm

    Indeed those bulky capacitors are here again. The bad ones of course! But Sherlock HolmEs himself couldn't have fixed it any better (lol).

    • Parasuraman S

      August 6, 2023 at 11:58 am

      Ha! Ha! Enjoyed the pun! Many thanks, dear!

  3. Imoudu.O

    August 6, 2023 at 4:16 am

    Are there replacement empty adapter cases on sale too? Thanks for sharing.

    • Parasuraman S

      August 6, 2023 at 11:58 am

      Yes, it is available in various sizes too! Many thanks!

  4. Imran

    August 6, 2023 at 5:30 am

    It is exciting to see when a Power supply has just bulged caps only. At least now you can watch your favourite movie .

    • Parasuraman S

      August 6, 2023 at 11:59 am

      Yes, dear! Many thanks for your comments!

  5. Yogesh Panchal

    August 7, 2023 at 3:39 pm

    Good fix! Sir

    • Parasuraman S

      August 7, 2023 at 10:45 pm

      Many thanks!

  6. Arunkant L Pandit

    August 8, 2023 at 6:47 pm

    Dear Sir,
    I have one suggestion.
    Power supply circuit has fuse resistance but MOV is not there across the AC input after the fuse. Can be added to safe guard the circuit due to high voltage surge.
    07D471 or 07D511 MOV may be used.

    • Parasuraman S

      August 9, 2023 at 9:02 am

      Very good suggestion! Shall take it in due course! Many thanks for your comments, involved and concerning suggestions! Really appreciate!

      • Arunkant L Pandit

        August 10, 2023 at 4:12 pm

        Many thanks for appreciation.

        • Parasuraman S

          August 10, 2023 at 8:30 pm

          I have already ordered the MOV specified by you. Thanks once again!


    August 13, 2023 at 11:03 pm

    Dear Sri Parasuraman
    Thanks for sharing a nice article.
    I think by this time you might have received lot of invitations from
    EL CAPS manufacturers to join their sales team (LOL).

    All the best.
    With respects
    Natarajan, Chennai


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