Question about Mitsubishi WS-55315 55" Rear Projection HDTV-Ready Television

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Lightning strike hey thanks for all the help so fare. I got the back of the tv open and i found a fuse right by the power cord but i didnt find any other fuse that was obvious. the fuse i found i checked it with a ohm meter and its ok. do you have any other ideas?

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  • bkindle Jun 12, 2008

    will all the fuses look like the one by the cord or are they a different style. Because i seen on the middle of the circut board where it said attention fuse but i didnt see a fuse. Should i look on the bottom of the circut board to see if there is burnt soder or will there not be something like that.

  • bkindle Jun 12, 2008

    i see on the circut board where it says "see fuse notice" but all the resistores around it have strips on them. I see things around them that set high off the board that look like resistors and dont have a srip but the have long legs. How would i test them to know if they were bad.

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  • Mitsubishi Master
  • 8,617 Answers

There is usually about 3 fuses in mitsubishis many models have more than 3. Look the bord over good where the power enters especially in the center of the board.

Posted on Jun 11, 2008

  • Sonny Berry
    Sonny Berry Jun 12, 2008

    There are some pico fuses that are either green, yellow or brown solid color that look like resistors except no bands they will be solid color green brown or yellow

  • Sonny Berry
    Sonny Berry Jun 12, 2008

    you have to unsolder one side and lift that side out of circuit to test them for resistance or continuity

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2 Answers

Will a nearby lightning strike cause a power board failure?


It could happen yes it would depend where the strike entered the TV. Not all lighting strikes hit on the electrical lines, on a TV they can come through the cable, as well as a antenna if you have one hooked up.

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Had lightning hit near by and tv will not do anything. could it be the cord or is there a reset button?


it may have blown the shock diode on the power board check that and change it. it stops the tv from blowing up in a lightning strike. if it has worked it wil have just blown that and the fuse inside the tv and nothing els.

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when the fuse always blown, it could be a shorted component at the power supply board or the main board was affected during lightning where in some of the component get burned then cause a shorted line.if you don't have an idea in any electronic repair just leave it to the trained technician to do the works. hope this can help you thanks for using the fixya.

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Lightning strike, power was out for no longer than a second and came back on - only TV has been effected and will not respond by remote or tv button. Shows it is on. But only getting fast clicking noise...


Hi Johnson,

Only 50% chance that the symptoms was caused by a lightning strike because your cable box was powering on fine. Most of the cases when lightning strike near to your area, possible of multiple damaged to the electronic device not only to one particular appliances, most especially if they are plugged into the outlet. Also, fuse will blew because of excessive voltage.

I've suspected that the symptoms was only a co-incidence of lightning strike. If you can hear the clicking of the relay, this is only means that the standby power supply is working fine. However, this board has multiple output voltage feeding the other boards to function well. This kind of symptoms is a power supply related problem.

If you have necessary tools and test instrument and handy with electronics, you can troubleshoot this board to find the faulty parts like open fusible resistors, shorted transistors/IC's, leaky electrolytic capacitor, etc.
Another option is to replace the entire power supply board, this is more convenient if you are going to DIY because no soldering required. Try to find you board HERE. Type the model no. of your unit to the search engine, available parts/board will be display.

Hope I helped you.
Have a nice day!
Thanks for using Fixya.

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I would start with your power supply. If you took a surge it is possible that you only blew a fuse. If it is a blown fuse, make sure you only use the same type fuse.

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Now,the tv turn on,the front of LCD screen panel the power LED light is blinking or no power LED light indication nothing at all?Yes.The tv power supply board have problems,it dead.That the board,where the power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

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TV won't turn on


Hello Marie,
I am sorry to hear about your situation. Most tv's do have an internal fuse, so if you open the chassis (which is the back part of the tv and slide it out and away from your circuit boards) the fuse will be located where the cord comes into the circuit board. Look for burnt or scorched spots on your circuit board also while you have the back off. I am sorry to say that most often than not in cases of lightning strikes the damage is expensive to repair and replacement of the devices is usually cheaper. Since the strike got a lot of your devices, it is not looking good. If you have further questions or need more assistance please let me know and I will be more than happy to help.

If you do not mind please rate my help, I would appreciate it. Thanks

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1 Answer

LIGHTENING STRIKE


Ed,
Open the back and take a look at the saw tooth filter cap. It's the largest cap you'll encounter in the PS. Just follow the electrical cord onto the board and look for a VERY large electrolytic cap in that area. Usually they bow at the top on a strike like that. Replacing the cap might restore the unit.
If not do you have an esr meter?
Bill

Apr 28, 2008 | Televison & Video

2 Answers

19 in blue screen only sound works great


un plug the tv for 3 minutes to reset it, then plug it back in. if this dont fix it, please get back with me and tell me if you had any power outtages or surges. some times lightning strikes can burn out the tuner when it strikes the cable line.

Oct 19, 2007 | Westinghouse LTV-19W3 19 in. LCD...

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