Question about Mitsubishi L75A91 75 in. LaserVue HDTV
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Posted on Jan 02, 2017
It sounds like you have a bad ballast board, or possibly the power supply going to the ballast bulb. I'm afraid that if you do not have the repair experience on solid state TV sets, you will need to contact and authorized Mitsubishi repair center. Good Luck
Posted on Jul 10, 2007
SOURCE: Power turns off automatically
Same w/ mine. Repairman said they turn off auto to protect the set no matter what is wrong. Take it to be fixed. Mine was right at $100. Works great again.
Posted on Oct 25, 2007
I gave this advice to someone with this same problem so here it is again:
It sounds like your shutdown circuit is being activated. This is due to excess current being drawn. This usually happens in the High Voltage section of the TV or one of the deflection stages. Due to the nature of this problem I would suggest that you take it to a local TV repair shop or have a TV repair person come out and take a look at the issue. The HV section is dangerous and should be dealt with by a qualified TV repair technician.
I hope this helps
Posted on Jul 13, 2008
SOURCE: TV WILL NOT COME ON
Your tv is probably going into a "protection mode" this means something inside the set had failed. This is the tv's way of shutting down before more damage can occur. This could mean many different things that could have gone wrong with this unit. Your best bet is to call your local dealer and have them come out and look at it for you. Tearing apart tv's is very dangerous! Some sets have up to 30,000 volts on the anode! GOOD LUCK!
Posted on Aug 17, 2008
Sounds like you have a bad green picture tube that has failed. To check this out; remove front speaker grill, remove small panel, you will see three CRT's (pictue tubes) sticking down, remove the little board on the middle tube then restore power. If TV stays on more then likely the CRT is bad but not always the driver on board could also be bad, check voltages.
Good Luck, big IRISH.
Posted on Sep 26, 2008
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