SOLVED VIZIO M550NV NO Photograph NO Audio
I’ve a 55″ vizio that when i connect it into the wall outlet, the vizio orange mild flashes several occasions and following a though it stays orange, I flip it on
I opened the television set and bought the next readings when the tv set was on (white vizio gentle) to the electric power provide board where by I have positioned the crimson circle on the picture.
on the base up
one.86v meant for being 12v
1.86v intended for being 12v
3.22v intended to get 12v
three.32v supposed to become ?
Is this standard? I hope I’m building sense and i am sorry for the very poor footage but its evening time.
No, the readings will not be usual they are simply also low the transformer just isn’t switching on. You are likely to need to check out the diodes
I have connected a file regarding how to take a look at the opto-isolators mainly because they would be the most tough to examination.
Have you ever checked Each of the fuses ?
The a person within the bottom seems like a diode to me inside the image but I’m unsure mainly because its not distinct adequate it may well be considered a resistor. Of course, the diodes you analyzed are Okay due to the fact existing does stream in a single route only. For the warmth sinks you can find also voltage regulator diodes, for those who start looking attentively on the symbols the thing is 2 diodes jointly that means the diodes conduct both equally options. But to test individuals you are likely to need to desolder the pins to acquire correct readings, replica christian louboutin shoes require the numbers from the regulators and make use of a details sheet to uncover the correct pin-outs. We will take a look at the regulators one-by-one with electrical power off and on however, you should have to examine the fuses very first. (I’ve circled them)
Screening the fuses is straightforward, christian louboutin replica for men established your meter on continuity if the meter is supplied with tone it may promptly show you they really are great or not. Once the fuses are effective you should obtain a beep audio if not you are likely to not obtain a tone or readings from the meter it is going to indicate an open up circuit.
Have you analyzed the bridge additionally, the opto-isolators but ? One time you happen to be completed with those people we will check the primary transformer and go further into troubleshooting the board.
the one inside the bottom it can be all black without any marks on it (yellow circle), christian louboutin replica if it’s a fuse it checks out excellent. I tested the many fuses and they are all right. I analyzed all six diodes I’m able to establish (pink cricles) and so they all pay a visit to alright but I’ve not tested the bridge along with the opto-isolators since in accordance with the textual content you connected, it suggests that i really have to unsolder them in order to check them best? Also, how does one take a look at the bridge?
If I have not explained it yet, thanks male that you’re definitely a kind and handy person.
Testing the bridge isn’t any substantial deal all you want to perform is about your meter on diode examination and just stick to these straight forward ways.
On each individual pin for the bridge you’re going to obtain these symbols. The initial pair would be the positive indication (+) one other the undesirable sign (-) . This can be the DC output within the bridge. (40-50v D/C)
The 2nd pair are 2 indication waves (~) this can be the AC enter aspect within the bridge (110-120v A/C).
The bridge checks similar to a common diodes but because usually there are four of them in a single offer you test them such as this:
1) Acquire the crimson probe of one’s meter and position it over the advantageous (+) indication along with your undesirable lead towards first of all indication wave adjacent into the favorable signal. Set your meter on diode check the diode need to carry out 1 way. Reverse your qualified prospects with the second examining to the pins you mustn’t obtain a studying.
2) Do exactly the same matter to your destructive as you did about the beneficial but only this time destination your purple direct over the negative indication plus the black guide into the indicator wave future to your bad indication. The meter should preferably provide a reading through , reverse your leads so you shouldn’t obtain a browsing.
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