Question about Akai PT46DL10 46" HDTV-Ready Television

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Won't show picture but has sound

We have an 46inch Akai PT46DL10 projection televison set. We can here the sound but there is not picture. The green power light just keep flashing like it is trying to come on but never does. Please help.

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You can have numerous problems. I have the exact same television in my shop awaiting parts because they are extremely hard to find. The service manual is useless unless you have the diagnositc software adn operational software to properly test the television, so do not attempt to buy a manual online you will waste your money. The television is actually pretty easy to check if you have a multimeter, T10 torx screwdriver or T10 socket, and a philips screw driver. First of all remove the back cover from the television, do not worry about the screen assembly, it is flimsy but it is mounted on the inside to not go anywhere when the back cover is removed. Next remove the black voer that is mounted by 4 torx screws, the cover that has the projector part of the engine assembly sticking through, be careful not to damage the black foam rubber that is around the projector head. Once you have those two covers off, unplug the ballast power supply wire which is the white and black wire on the bottom of the ballast, the ballast is the cicuit board that is mounted in front of the big fan on the right side Also has two wire coming from the top that plug into the lamp housing. With a multi meter check to see if you have power going into the ballast (TV has to be plugged in and turned on to do this step). If you have power going in then turn the television off and unplug it and and plug the power supply wire back into the ballast. Next remove the lamp which is secured into place with the one screw on the left side. See if you have power coming out. If you have power coming out than replace your lamp. If you do not have power going inot the lamp than replace the ballast. If you do not have power going into the Ballast than replace the power supply which is part number DVL-U2830XC good luck in finding that part. If you have power going through to the ballast, and to the lamp and have replaced the lamp than replace the video board Part Number B0001, good luck finding that part. If you have replaced the Video board, ballast, lamp, and power supply and it still fails part your television out and make parts available for other people because the last thing is the engine assembly which costs 2999.00, yes that number is right Two Thousand Nine Hundred and Ninety Nine Dollars. Again, parts are very hard to come by for that model and unless your a customer like that one I have that actually wants it fixed don't bother with it.

Posted on Mar 01, 2010

  • BugMeNot1 Nov 29, 2010

    what are the expected input and output voltages at the ballast?

  • evilpea Jun 15, 2011

    about 300 volts

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