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Which component has likely failed here ?

  • 22-11-2016 10:27am
    #1
    dodzy
    Registered Users, Registered Users 2 Posts: 10,153 ✭✭✭✭


    Hi folks, calling on the sparkies here for some insight. A friend purchased a light lamp from the states and it came with a 2 pin american / 3 pin irish adapter. The unit is obviously 110V and she just assumed that as it came with the adapter, she could just fire it up. Nope. Dead. I opened it up and there is one small fuse (F1) on the board which is intact. What do you think has most likely failed due to over voltage ? Transformer perhaps? Here is a link to the exact item. Some clear pics of the internals just down the page

    http://www.leeholmes.com/blog/2014/11/29/repairing-a-naturebright-suntouch-plus/


    Any feedback greatly appreciated


Comments

  • #2
    Effects
    Registered Users, Registered Users 2 Posts: 9,760 ✭✭✭Effects


    It's stated that it takes 120V, not 230V.
    Do you have a picture of the adapter type? Was it a definitely a step down transformer?


  • #3
    dodzy
    Registered Users, Registered Users 2 Posts: 10,153 ✭✭✭✭dodzy


    Effects wrote: »
    It's stated that it takes 120V, not 230V.
    Do you have a picture of the adapter type? Was it a definitely a step down transformer?

    Yes, its 120v which was plugged directly into a 230V irish socket. The fact that it came with the 3pin adapter was a bit stupid in fairness. I purchased a step-down TF after the event but the damage has obviously been done. So its back to the "what most likely has failed" query. We might be able to source a replacement part if we can establish exactly whats dead.


  • #4
    Effects
    Registered Users, Registered Users 2 Posts: 9,760 ✭✭✭Effects


    I'd take a look for a blown fuse first. There's one marked F1 on that link you sent. Check that out. Also look at where the power cable goes into the casing for a fuse holder there somewhere.


  • #5
    dodzy
    Registered Users, Registered Users 2 Posts: 10,153 ✭✭✭✭dodzy


    Effects wrote: »
    I'd take a look for a blown fuse first. There's one marked F1 on that link you sent. Check that out. Also look at where the power cable goes into the casing for a fuse holder there somewhere.
    yep, F1 is good. No sign of another though.


  • #6
    GreenFolder2
    Closed Accounts Posts: 710 ✭✭✭GreenFolder2


    Was this sold in Ireland? (Or from anywhere in the EU?)

    It's impossible for that to be in compliance with CE so any marking is fake.

    You should make a complaint to the CCPC


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  • #7
    brightspark
    Registered Users, Registered Users 2 Posts: 2,637 ✭✭✭brightspark


    Do you have a meter?

    Is voltage reaching the transformer?
    Is there 12V coming out of the transformer?
    Is there voltage on the grey lamp control box? (Probably an electronic ballast).


    Not easy for anyone to guess without more information.


  • #8
    red sean
    Registered Users, Registered Users 2 Posts: 2,917 ✭✭✭red sean


    GreenFolder2 wrote: »
    Was this sold in Ireland? (Or from anywhere in the EU?)

    It's impossible for that to be in compliance with CE so any marking is fake.

    You should make a complaint to the CCPC
    Read the original post ;)


  • #9
    eeguy
    Closed Accounts Posts: 3,478 ✭✭✭eeguy


    Could be many things.
    Capacitors probably not rated, IC is probably not rated. Any signs or smell of burns?

    You'd have to get a meter and start checking components from the input right through.


  • #10
    dodzy
    Registered Users, Registered Users 2 Posts: 10,153 ✭✭✭✭dodzy


    I'll be picking this up during the week to have a delve with the multimeter and see if we can spot what's going on. Will update....


  • #11
    cml387
    Registered Users, Registered Users 2 Posts: 8,644 ✭✭✭cml387


    I would guess there's a power supply that takes in 110v and gives out 5V dc for the electronic circuit board.

    The power supply is probably blown. Not an easy fixt (I've done it at work when we received pc's that were supposed to have been switched over to 220V but weren't:o).


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