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Replacing ballast board

Hi! My VPL-CS4 powers on intermittently - every 2-3 weeks. In researching the solution I read your answer to the problem "LED won't come on and only faint hum is heard". How does one replace the ballast board? Got any suggestions?


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I want a ballast board part number 913700808905 EUC120P/H11 where can i get one its for a samsung dlp tv

Posted on Jul 28, 2009

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Ballast board is difficult to obtain better ask good service center for help.

Posted on Jul 08, 2008

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My sony VPL-CS7 projector lamp goes of very minutes


1,if the lamp can be lit for 1minute,so the lamp is ok
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Hi 3mad

This is quite a sticky one as this could either be the lamp or the Ballast ( lamp's powersupply )

And the bad thing is that the only way to be certain , would be to first replace the lamp and if this continues the Ballast as well.

I would suggest you to replace the lamp first , as this is never a waste , you could always keep it as a spare and 99% of the time it is the lamp will give this kind of problem.

Good luck and thanks for using Fixya !

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Your Projector needs a new lamp and do remember to reset the lamp timer after replacing the lamp .

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Hi there

You should first check if there is any visible damage on your lamp. If not then it could be a faulty Ballast ( lamp powersupply )

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7 Answers

No power to Sony cs4


Ok - So i finally located the problem for the Stby lights not coming on......

Mine had the same procedure as all the other posting this - Could take up to 48 hours for the light to come on but this time only the whistling sound from the fan house on the front was present.

So i dissmounted the power supply located on a standing card at the back of the housing and found the faulty component :)

The solution for this problem is a IC in that board called IC MCZ3001DB changes this and all your problems with the projector not starting will be solved.



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Denis, by default laptops usually output only to their own lcd panel. There must be a key combination on your laptop wich rotates output in 3 steps: lcd panel only, lcd + TV (projector), TV only. The key combination uses a special Function key (FN) usually blue (found near left Ctrl key)with one of the numeric keys. So, first make sure your laptop output is correct and then try input key on your projector.

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