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Sanyo PLC XT25 - all indicators flashing

Sanyo PLC Xt25 projector is flashing all iondicators when turned on.Cleaned out filter and turned off overnight.Back the next day, when plug in ac adaptor it comes up with power and filter indicators on. THe filter has been cleaned out already.Once turned on, after around 10 sec starts flashing all of the indicators again. and doesdn't turn on.

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SOURCE: I have a Sanyo plc-xt25

Every projector lamp is equipped with ballast. The problem area is ballast. Either the ballast is not getting DC supply or the lamp turn ON signal from the projector main board or the ballast is faulty. Remove the lamp. Connect the projector to the mains supply. Check the voltage at the lamp connector inside the projector without turning it ON. It should be around 65 volts A/C. (Warning: Multimeter will get damaged if the projector power is turned ON due to generation of high voltage) If you find this 65 volts then it confirms that it has DC supply & the ballast is functioning. The ballast receives the the turn ON signal from microcontroller through opto-coupler on the ballast. The ballast opto-coupler can be checked by providing external 5V DC supply between pin 3 (+ve) & 4 (-ve) in turn switches ON the lamp. If this works then there is no problem with your lamp & ballast. The problem lies with the main board. If this does not solve your problem then give me the feedback.

Posted on Aug 04, 2011

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In Sanyo XT25 after lamp blinking indiator replace new lamp but didnt reset the lamp counter now it is hanged with all five indicators blinking


After a lamp replacement, lamp time set function should be resetted, and it is a must. If you wish to get more details, check this link. http://electronicshelponline.blogspot.com/
Pull up previous posts by its left sidebar, or type in the brand name and model number to of your set, to its search box, and press 'Enter' or view it in Mosaic / Timeslide option.

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I have only experienced all the indicators flashing after 3mins of powering up and then suddenly shutting down. I have not yet experienced the indicators flashing straight after turning on.

I think the problem for me was that the filter wasn't seated firmly enough in the filter compartment. I was able to stop the indicators flashing by turning off the power at the power point, removing and reinstalling the filter, making sure that it fit firmly and tightly in the compartment. Then I turn the power back on. I believe that sometimes if the filter isn't set in the compartment tightly enough the projector will think that no filter has been installed and will automatically shut down after 3 mins.

You also need to make sure that the filter has not run out of scroll. to test this, push down the small, white spool on the left whilst pushing down and turning the large geared spool on the right anticlockwise. If the filter continues to scroll you can still use it. If not, the filter has reached the end of the spool needs to be replaced.

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Every projector lamp is equipped with ballast. The problem area is ballast. Either the ballast is not getting DC supply or the lamp turn ON signal from the projector main board or the ballast is faulty. Remove the lamp. Connect the projector to the mains supply. Check the voltage at the lamp connector inside the projector without turning it ON. It should be around 65 volts A/C. (Warning: Multimeter will get damaged if the projector power is turned ON due to generation of high voltage) If you find this 65 volts then it confirms that it has DC supply & the ballast is functioning. The ballast receives the the turn ON signal from microcontroller through opto-coupler on the ballast. The ballast opto-coupler can be checked by providing external 5V DC supply between pin 3 (+ve) & 4 (-ve) in turn switches ON the lamp. If this works then there is no problem with your lamp & ballast. The problem lies with the main board. If this does not solve your problem then give me the feedback.

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1 Answer

Instructions on changing bulb


Turn off the projector, unplug the AC power cord, let it cool for 45 minutes.
remove the screw that holds the lamp cover on.
remove the 2 screws that hold the lamp in. lift the lamp out by the handle.
replace with new lamp and do the reverse.
reset the lamp counter.
press the menu button.
go to setting menu, then to lamp counter, press select button, select reset, select YES. then YES aqain.

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I had a similar problem, but with no lcd lights showing and the technician diagnosed as being caused by a faulty Ballast which he said caused the bulb to fail. He didn't test the bulb but his experience indicates that even if the bulb was not blown it would have been stressed and it would only be a short time before it fails completely.

When these fail there is no real reason for it it seems but it has been suggested that a probable cause could be not cleaning the filter, at least every six months. The result of a dirty filter would be overheating and this could be the cause of the failure. Perhaps you will have to check the ballast for problems

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Welcome to resolve the problem if you please say what are the solution to me the same problem

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