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Mitsubishi 57833-I Think I Messed UP
Posted: Mon Nov 24, 2014 11:15 pm
by bluesax
Well, my 57833 had a dark band across the top and it was suggested that a solution would be to move the board (with the DLP chip) around until it went away. I took it apart yesterday and found out that the screws on the board, even when loosened, didn't allow for 'movement.' Okay. So I buttoned everything back up and now, when I turn on the set, it turns off almost immediately and there is no picture. I have audio for a few seconds then...poof. Solid red light. So, I'm wondering if I should replace the lamp (a cheapo I bought maybe a year ago) or is it a ballast problem. Or....? Help. Please. Thanks
Re: Mitsubishi 57833-I Think I Messed UP
Posted: Mon Dec 01, 2014 9:31 pm
by grayfox
Hi,
So after all this trouble shooting basically you end up with a RED screen??? If you are getting an image then the light is working (that only emits white light), I think maybe the coorwheel is not spinning or something was not plugged in correctly.. normally when i rebuild a big screen TV like this, sometimes I get a band top or bottom! And I loosen the entire light engine and move it around, if you no longer get the black band maybe either the colorwheel is/went bad/damaged or the light tunnel is severely miss aligned. You can rectify this by taking everything out and rebuilding it piece by piece, connector by connector and making sure every screw and plug are snug..
Good luck and keep us posted!
Re: Mitsubishi 57833-I Think I Messed UP
Posted: Wed Apr 01, 2015 12:25 am
by bluesax
Hey Grayfox. I really appreciate your reply. Sorry it took awhile to get back but I've been gone. So, to update. I don't have ANY screen. The tv turns on, I get audio for a few seconds and it turns off. Since the problem began, I just got another OEM lamp and installed it today. Same result. Seconds of audio, shuts off, steady red lamp indicator for awhile then it too goes out. No video at all. I'm thinking that you're right and I need to take her apart again and check all connections. Or is there some other check I can do first? Again, thanks for your suggestions.
Re: Mitsubishi 57833-I Think I Messed UP
Posted: Fri Apr 03, 2015 10:50 pm
by grayfox
Hey,
Ok so by what you describe I am almost certain this is ballast issue. This is completely normal, chances are if you Google it you can find a guide to replace it.
This is a consumable part so even if it was not defective once the lamp has been replaced on a Mitsubishi DLP 2-3 times the ballast needs to be replaced..
Hope this helps!
Re: Mitsubishi 57833-I Think I Messed UP
Posted: Tue Apr 07, 2015 9:54 pm
by bluesax
Thank you, sir. I have to check the ballast next. I opened t up, checked all the connections and screws, but after I tried to fire it up NOW I get a steady red Staus light. Not sure where the ballast is but I'll give that a try. Before I throw in the towel.
Re: Mitsubishi 57833-I Think I Messed UP
Posted: Wed Apr 22, 2015 11:21 pm
by bluesax
Hi All,
Quick question. Is there any way to test a lamp outside of the set? A meter or anything to check if a lamp is good or bad? The tv is probably past putting more money into but I'd like to know that both lamps I have are good, in case I decide to sell them. Thanks for any help.
Re: Mitsubishi 57833-I Think I Messed UP
Posted: Thu May 28, 2015 6:28 pm
by grayfox
Hi,
I do not think there is a way to test the lamp outside the TV without a proper safe bench workstation and the corresponding ballast. Keep in mind the ignition jolt is 5-20kV!
Taking a multimeter, as proposed, will render a false result because of the arch gap in the uhp chamber..