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I have sound to my tv but i can't get the power on the tv to come on and i don' have a picture.

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Http://www.scribd.com/doc/22277758/Toshiba-TV-LCD-Training-32wl36p
Above is a link for a training and service manual, the troubleshooting and repair procedures are all inside.
With this symptom, it is impossible to tell what the exact "Cause" of this symptom is. The symptoms, really do not tell us what is wrong, sometimes it may indicate the "Area" in your case it is the X board. BUT thats NOT where the "Fault is" thats just the part that is affected. These days unlike the "Old" analogue days it just isn't realistically possible to fix anything but the most basic of problems with todays sophisticated units. This is quite apart from the Safety aspect, any unit that can cause a firs or have an explosion, or both, is NOT to be treated lightly, and and the repairer, of the unit is legally responsible, another thing to think about. Also, one must have tools, a Multimeter, a soldering iron, a deslodering iron, an oscilloscope, a signal tracer, tools, and most important of all, a Service Manual, without which, there is no way to even begin to understand and fix it, and more importantly Program it, AFTER it has been fixed. As these days a TV, is a PC, a Tuner, and an HDTV Monitor, and more, all in one. in the "old" days TV"s were more, rudimentary, and built to last for 20 years, and a "Parts" supply was set aside. They usually used to fail for only a few reasons, and they while still difficult, were less difficult to repair. Electrical knowledge was transferable, and they could be and would respond to, This-is-the-symptom-This-us-the-Fix, But that no longer applies, as now, it can be a Fault on I squared Bus, or "Sensor" failure, or it simple may have "Crashed" just like a PC, It could be a Diode go bad, and that will stop the whole thing. You see, in the day, the sets were Very "Fault Tolerant" because they were Analouge, and a faulty, component, or more sometimes, the set would always diplay something usually, and when they didn't it was one of anly a few things, sure there are always the horrid ones, and there are pleanty of those, but all in all it was quite easy. But with Digital Electronics, it either goes, or it doesnt, there are usualy few half measures. I mean thats the definition of logic either going or not. So it can take very little to completely paralyse a set, and generally give the only sysmptom, it can, by not working, usually No picture, or the like. So you, see the list is endless almost for any given SYMPTOM, as that is what is being seen, not the cause, as I keep going on about. Also any fault, usually involves the Power Supply, it is either the cause, the cause of the damage, or it is damaged. or ALL of them. Then after you have done the electronic repairs, you then must program the set to work, and align, and set up in general, any one of those settings missed or done wrong, back to square one. So, it is nearly always my professional opinion that one should always get a "Quote" form the manufacturers recommended service center, I cannot stress how important that last point is. It is even worth the cost of shipping. you see an authorised service agent, will have trained staff, trained on their brand, also they have first hand access to parts, original parts. This will actually save you money and ensure you can actually get it back fixed. Of course asking for a "Quote" also gives on the option of repair or replace. Often my clients, do not go through with repair, unless it is moderate, but in some of the more costly jobs they see it, as do I, that a replacement, with a warranty, is a better option. As an aside here, one could then tear the TV down, and sell the Known Good bits. You'd be surprised who needs parts, I myself often must by from third party sources to effect a repair. So money could be recouped, somewhat, and possibly help out someone else, as well.. So, it is nearly always my professional opinion that one should always get a "Quote" from the manufacturers recommended service center, Toshiba in your case, please contact a local or head office and ask for a referral to an Authorised service center. I cannot stress how important that last point is. It is even worth the cost of shipping. You see an authorised service agent, will have trained staff, trained on their brand, also they have first hand access to parts, original parts. This will actually save you money and ensure you can actually get it back fixed. Of course asking for a "Quote" also gives one the option of repair or replace. Often my clients, do not go through with repair, unless it is moderate, but in some of the more costly jobs they see it, as do I, that a replacement, with a warranty, is a better option. As an aside here, one could then tear the TV down, and sell the Known Good bits. You'd be surprised who needs parts, I myself often must by from third party sources to effect a repair. So money could be recouped, somewhat,and help out someone else.

Posted on May 10, 2010

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Vizio m420nv has sound but no picture


Hello there

Actually that problem is very common on all LCD TV,, that problem is cause of either inverter board or t-con..

In this case you don't need to check the voltage that is too complicated for you,,only visual check is enough..

I share you my tricks and hope it helps..

Power on your TV turn off your lights..if you will see the light comes from the screen the problem is t-con..if no light the problem is inverter board (backlight) board

Hope it helps..

Don't forget to rate..

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Hi,

That kind of problem is very common on all flat panel TV..

If there's no red lite to the front panel of your TV and no picture or sounds..

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Laid tv face down on new rug to install legs,set back on table,sound,no picture.had picture 10 min prior


You should be seeing a validation that the TV is getting power. Like the lights are coming on, or you are hearing clicking when you plug in or power up the TV.

Make sure you have the TV’s power cord plug inserted all the way into the TV.

Also, make sure the TV's cord is plugged into a good power outlet. You may want to plug something else into the power outlet to be sure the outlet is good.

I don’t see how laying down the TV would cause this issue. Unless the TV was kind of dropped and or twisted to cause a board inside the TV to fracture/break.

I hope this information has helped you.

Good Luck.

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What`s seems to be the porblem


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DON.

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