Question about Sanyo PLV-Z4 Multimedia Projectors

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Lamp replacement I am trying to replace the lamp in my projector but after replacement is still say lamp replacement needed and the lamp does not come on, I have tried two different new lamps, any suggestion or do I need to take it for repair?

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  • Ueli Nov 08, 2007

    I have the same problem, lamp replaced, still not working. But what is the "ballast unit" and how to replace it?

  • MeanE Nov 10, 2007

    I have the same problem, replaced teh lamp and it still says that it needs to be replacxed

  • Lamiral May 24, 2008

    I had exactly the same problem. Followed the instructions to reset the overheat switch which had tripped. Now working.
    I am simply mad at Sanyo for making me buy a new lamp for no reason !!


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I had this issue.  Turned out the thermal switch was tripped and just needed to be reset. (The usual disclaimer: This procedure will void your warranty and is entirely at your own risk) Remove the six screws marked with arrows to open the top (be careful as there are still wires connecting the top to the bottom.  The thermal switch is directly over the bulb assembly and connects to the main board with two thin wires (grey and white on my Z4).  You can check the switch with a multi-meter.  Normally the two wires should be shorted, if there's no continuity it's tripped.  When it trips a small plastic pin painted white on top pops up, just press it back down and you should be good to go.  (It's a good idea to clean your filters, and check the projector ventilation after to ensure it doesn't get tripped again)

Posted on Jan 18, 2008

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Yes, the Projector has one Ballast unit which is not working. check or replace the same. that will work definitely.

Posted on Jun 04, 2007

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