Question about Sony SuperLite ultracompact Project VPL-CX5 Multimedia Projector

3 Answers

Sony cx5 data projector

Hi
When I first plug in the mains cable, there is no back light around the on/off button on the top of the projector, and of-course, it wont fire up, either manually from the button or the remote control.
I can wait up to 20 minutes for the light to come on; when it does, bingo, we are away; no probelms at all.
I have changed the mains cable, fiddled with the lamp cover; nothing makes any difference; it still will not come on when first powered from the mains.
Please help!
John

Posted by on

  • brotherjohn Dec 26, 2007

    Hi,
    When the projector is first powered from the mains cable, there is no activity in the projector; no fan noise. Also, the light ring around the on/off button on top of the projector which should glow red, is definitely dead. Once the light ring (around the on/off button) lights up red, I know it will start up and operate normally. There are no smells of burnt components. There is some electronic mechanism which is preventing the power supply from activating when first plugged in.
    Cheers
    John

  • brotherjohn Dec 29, 2007

    The power supply works perfectly when it does decide to power up.
    I am sure that it is something to do with a sensor which prevents the power supply from firing up. Maybe the thermal shut down circuit which holds the fan circuit on until the lamp temperature is below a certain limit.
    Is there some logic circuit which prevents the power supply from triggering?
    ps it doesn't come on at all now!
    Cheers
    Brotherjohn

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If the light for the power botton is no lightig the problem is from the power suply to the switch looks like there is a line contact or probably fuse the one it has false contact check for soldering open or components loose if the termal protector was the problem just the light will not work but the fan and the power botton it have to be on let me explain this electricity from the outlet 120 a ac goes thru the cable thru the transformer that will reduce and convert the ac to dc when the current pass trhu the diode transformer reduce the de 120 to 12 and the diodes convert from ac to dc after that goes thru the fuse from the fuse the conection goes thru the switch from the switch to the termal protection device and to the fan and to the lamp and with a paralel conection will conect the rest of the board

Posted on Dec 30, 2007

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Of course this problem is some where in trigger circuit.
some kind of FET has got damaged inside for sure.
that is what is the problem.
you last comment is very correct i think.
if power is turning ON after 20min also it means it can turn ON.
but matter here is its turning ON late.
this must be a reason from some trigger circuit.
this can be better solved by having a service manual in hand.
in this case i shall recommend you two things.:
1:first of all get a service manual
2: if you dont want all this head ache go for a tech who shall replace the trigger circuit for you.

Posted on Dec 30, 2007

  • dewan nafees ahmed Dec 30, 2007

    i think you have not shut down the projector properly if past(before this problem came). this will lead to actually breakdown (as per manual page 26).

    this breakdown in manual is referring to internal breakdown.
    the component may be some capacitor which is taking so much time to fire the trigger circuit.
    if there is nothing to to with the capacitors it must be some component like FET or something (which is used inside for trigger) which is partially damaged and is struggling for its life.

    if you choose to work with your projector it may die out soon.
    this is what i can infer from the data you say.
    thank you.
    let me know if i was useful in anyway.
    bye.

  • dewan nafees ahmed Dec 30, 2007

    if you are really good at electronics and its components you can open the apparatus and try to solve this.
    else means i would advice to call for a technician.
    without having knowledge of this dont try and mess it up.
    thank you

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Hello!

When you turn it on, do you hear the Fan whirring at all?

This could be due to a burnt out component near the power supply, if that goes, well, the whole thing goes.

Check for anything that smells or looks burnt.

Please let us know of any questions or more information so we can help you better.

Posted on Dec 21, 2007

  • Baja Data / Jay Arias-Chavez

    Sounds like something on the power circuit is dead (or dying, power supply), unless it's the lamp assembly, then again it should not take THAT long to come on.

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