Problem with OHP

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gagarin61

Member
2005-07-12 2:20 am
Adelaide
  • #1
    A month ago through Ebay I bought an OHP Eiki OHP-250M with 250W AC metal-halide lamp inside. I was glad about it not so long. Yesterday I could not start it.

    When I turned on my OHP, I heard a high frequency noise made by high voltage board. Inside the lamp I saw a dim blue arc but lamp had not started.

    I don’t know what trouble with. May be somebody had such experience? Should ballast make a noise if lamp is faulty? May be the problem is with a ballast? Or lamp cause it.

    Please help me!
     
    Y

    ywh

    Member
    2002-12-04 1:30 pm
    Earth
    www.gzmoovi.com
  • #2
    gagarin61 said:
    A month ago through Ebay I bought an OHP Eiki OHP-250M with 250W AC metal-halide lamp inside. I was glad about it not so long. Yesterday I could not start it.

    When I turned on my OHP, I heard a high frequency noise made by high voltage board. Inside the lamp I saw a dim blue arc but lamp had not started.

    I don’t know what trouble with. May be somebody had such experience? Should ballast make a noise if lamp is faulty? May be the problem is with a ballast? Or lamp cause it.

    Please help me!
    Click to expand...

    what type of your ballast?
    give me a pic
     
    G

    gagarin61

    Member
    2005-07-12 2:20 am
    Adelaide
  • #3
    Re: Re: Problem with OHP

    ywh said:


    what type of your ballast?
    give me a pic
    Click to expand...

    I don't know its type....

    My ballast consist of two boards. I will try to post here their images.

    First Board:
     

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    G

    gagarin61

    Member
    2005-07-12 2:20 am
    Adelaide
  • #8
    ywh said:


    You don't have a multimeter?

    How do you to do DIY?

    get one pleace! it is cheaper. only 10$ in my city.
    Click to expand...

    I don't have a multimeter... It is useless device for incompetent person...

    It is simply. I did my DIY projector only from two parts. There are OHP and Infocus PowerView 820 projection panel. What is a reason I need to have a multimeter for?

    Now my OHP is faulty. And I am disappointed that nobody can help me. I don't believe that nobody has the same OHP (Eiki OHP-250M or 2500M). It is not big deal to remove lamp, switch on an OHP and post an answer in this topic. I would be so appreciative.
     
    G

    gagarin61

    Member
    2005-07-12 2:20 am
    Adelaide
  • #11
    ywh said:
    give me a pic of your new lamp
    :)
    Click to expand...

    I attached a photo of my poor lamp. I don't have a new one.

    ywh said:
    simply way:
    you buy my lamp,try to run it ,.
    if the lamp can not work,return the lamp to me ,you lost shipping(5+5$) only.
    OK?
    Click to expand...

    For a start please say what kind of lamp do I need (AC/DC). Early you wrote me that my lamp and ballast are AC. But from one source I read that my ballast is DC. But I am not sure. It was japanese web page translated to English by Google.

    I post here a quote:
    ....
    Lighting device:
    Fixed electrical switching ballast
    ...
     

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    gagarin61

    Member
    2005-07-12 2:20 am
    Adelaide
  • #13
    ywh said:
    where is the japanese web page ?
    I can see some words, Chinese words are part of Japanese.
    If you are not sure in DC or AC. yon can choose DC,
    A DC lamp can be used in a AC ballast, it has 70-80% life.
    Click to expand...

    Ah, you are a polyglot!

    Try to translate it:
    http://www.eiki.jp/ohp/ohp-2500M.htm

    My lamp is marked as UMI-250PE. I found a bit information about a lamp UMI-250.

    http://www1.ushio.co.jp/catalog/100e/1035.html

    I don't know what is difference between UMI-250 and UMI-250PE.
     
    G

    gagarin61

    Member
    2005-07-12 2:20 am
    Adelaide
  • #14
    gagarin61 said:
    A month ago through Ebay I bought an OHP Eiki OHP-250M with 250W AC metal-halide lamp inside. I was glad about it not so long. Yesterday I could not start it.

    When I turned on my OHP, I heard a high frequency noise made by high voltage board. Inside the lamp I saw a dim blue arc but lamp had not started.

    I don’t know what trouble with. May be somebody had such experience? Should ballast make a noise if lamp is faulty? May be the problem is with a ballast? Or lamp cause it.

    Please help me!
    Click to expand...

    The problem is solved. Faulty lamp caused a trouble. Today I got a new one for 70 AUD (~50 USD).

    To ywh: Thank you very much! Only you had reacted and only you was trying to help...
     
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