I got a broken 65” 4K TV - How I repaired a Vizio M65-C1 (tv won’t turn on)

so I wanted a 4k tv but I didn't want to spend hundreds of dollars on one and I had an idea what if I could get a

broken

one and then fix it and then have one and that's what I was able to find a 65 inch 4k tv on Craigslist that was

broken

for a lot of money? I brought it home, diagnosed it and found out it only needed 47 cents worth of parts to get it working again and it has been working great. let me walk you through the entire process from getting the TV to fixing it come on so the story begins over a year ago when I searched online locally for a TV I could fix.

I used the search terms broken 4k tv and saved a search on Craigslist about two or three months later, I got an alert for a match, so this is what I've been waiting for: a 4k TV that is broken, won't

turn

on, and they want $200 for it, but does it have a crack? The screen is not great. I have to get this TV, so I offer the seller $150 and he accepts it. It even has the original box and styrofoam, making transportation a breeze. Now I'm looking forward to solving it. and I plug it in and yeah no power nothing works so I remove all the screws on the back and open it up.

If you have the same model, make sure that when you remove the back you don't just pull it off. Very hard, there is an actual cable on the right side that is connected. You can see it right here. It's the cable that runs through the input bar to the main board, so be sure to disconnect it before the rear plastic casing is completely free. Then I

turn

ed it on and noticed something interesting. The first thing I noticed was a flashing light on the main board which I later learned is supposed to be a solid color and I also noticed that there is a clicking sound coming from the power supply.

Can you hear it? ok then the problem is most likely with the power supply or the main board so the next thing I do is go to the internet and type the model number and the words no power and start scrolling through the results looking for clues that will help me diagnose what is wrong with this television and in a forum I found someone who has exactly the same model and has a problem with their power board, they found a fluctuation in the 12 volt line of the power board and they diagnosed it. and I found out that there was a faulty resistor and diode so I had to take my board out of this TV to see if it had the same faulty resistor and diode but the big question is is this a common problem on this power board or Is this exclusive to this person's board who posted on the forum?

Then the forum post gave the location of the faulty resistor. I go in and take a closer look with my trusty magnifying headset, I put it on and this is what I see and I get one a little closer and I start laughing look at that resistor it has a hole in it oh man it's the same problem or at least it is It seems like this someone else had and to check I take out my multimeter and take a look at this resistor and lo and behold, it's registering in mega ohms which means things are toast.

You can compare it to the one above, which is in the normal range of nine kilo ohms, so the diode is next, it's the next component from the resistor and a diode like If you know, maybe it has a half volt drop . You can see it's not even close. If I turn it the other direction, there should be no voltage drop, but you can see there is some, which is why this diode is defective so far. I have the exact same problem as the person on the internet post, so the next thing I check is the fluctuation in the 12 volt line.

You can see me pointing it out here. I have the board plugged in and I'm going to ground my black pin on the corner of the board and for some reason on this board it's level at 12 volts but it should actually be 19 volts. You can see the jitter I'm getting there, so I'm having the exact same problem this person described. Now I have a pretty good idea what's wrong with this power board and it's time to buy some parts. If you're curious about the parts I purchased or any of the tools I used in this video, check out the description below.

I'll link to all of them, so I went online to look for parts and the best replacements from a US dealer. 10 cents for the resistor and 37 cents for the diode. 47 cents total with 4.99 shipping, so here's the new resistor I need. Fine tweezers to work with it because it's three millimeters wide and for comparison I have the resistor and the diode on a dime so you can get an idea of ​​the size of these pieces so it's time to remove the old resistance and put the. The new one, the sound you hear, is my exhaust fan. I'll explain to you what I'm doing here.

The first thing I will do is apply some flux which will help the soldering process. Next, I'll put something new. solder on these joints and that will allow me to remove the solder more easily with copper braid. Now there are many different ways you could remove this resistor from the board. I'm showing you how to do it with copper braid, but you could also use hot air and tweezers, for example, after putting in the new resistor, I'll get out my hot tweezers and show you how you can remove them with them, but they're expensive and unless If you do this, you will work hard and you will find them. useful, most people don't need them.

The copper braid and soldering iron work well together now, when you melt the solder and put the braid on the metals want to bond with the copper so it looks like it's almost being absorbed by the addition of the new solder and flux help it will absorb into the braid much easier now that the resistor here has a little bit of adhesive underneath so I need to press it carefully while using my soldering iron to keep one side melted now I still have a small amount of solder on the left side but There shouldn't be any problems, I just need to push carefully and it should jump right now to take a little extra measurement.

I'm going to clean these pads a little bit, you really don't. It's necessary since most of the original solder is gone, but it doesn't hurt, so I'll speed things up a little here so we can get to the part where we put the new resistor in, so I'll add a small amount of I soldered these. pads and as soon as I put the solder on the second pad I realized I shouldn't have done that as only one side will melt at a time which may mean the resistor won't sit as flush with the board. but since I can push it down with my tongs while melting one side of the time, it will be totally fine if you make this at home.

First you attach one side, secure the strength and then add solder to the second pad now of course. I could have taken my braid out and removed it and done it again but you know the resistor isn't going anywhere so I'm pressing firmly with the pliers on the resistor so I'm trying to get it as flat as possible and the solder is melting . on the other side and to make it look really nice, I wanted to show you another way you can remove a component like this from the board using something called hot pliers. This thing plugs into my soldering station and is what the name implies, it squeezes like tweezers but each side is a hot iron allowing you to remove or add small components faster, like I said it's an expensive tool and I don't I use it a lot, but sometimes it's the tool you need for the job.

You can see here how. Much quicker was removing and re-adding the resistor, now it's time to remove the diode. I'll use the same method to remove the solder that I did for the resistor, adding a little flux, adding new solder, and then using the copper braid. To remove the solder, I'll speed up some of this as we go. One of the questions I get a lot is how did you get into this kind of thing and it's funny because what got me into fixing electronics was watching a YouTube video. I remember seeing a guy take an old TV out of the trash and fix it for a dollar and I thought I could do that and that was my inspiration.

I had seen televisions stacked near the dumpster at a local electronics store and asked them. to take them and they said yes, and that started a journey of learning how to repair televisions and from there learning how to repair all kinds of different things, so I'm trying to remove all the excess solder to make sure the wires are loose and at this point you could cut them or bend the wires to remove the diode. Make sure you bend the wires of the new diode appropriately. You can use the old one as a guide and definitely make sure you place it. in the correct orientation, there is even a little icon printed on the board to help you hold the diode in place with your finger, flip the board over and then you can bend the pins so it stays in place allowing you to have both hands free to solder it I'm really excited to apply power to this board after I'm done with this diode to see if these two components are all I needed.

There is always a feeling of anticipation when you work in electronics and plugging it in if something happens. pop, something is going to explode or it will just work fine. I need to cut these diode wires and then I can figure it out. Oh, and also remember to use some isopropyl alcohol and wipe away any flux residue that may still be on. the board is fine, one of the moments of truth, I plugged this board in after putting those two parts in and let's see if I get that fluctuation or not or if it's solidly gone 19 volts, that fluctuation is gone so that's a very good sign of This TV is going to work so I can't wait to plug it back in and press the power button.

If you like fixing things and you're like me, this is the moment you're so excited about and also dread. it works so I plug it in and look, the light is steady, the TV seems to be working, this is so amazing you can even hear the clicking has disappeared, not nice at all, let me turn the TV around and we will have the real moment of truth. Remember when? I bought this TV, it wouldn't turn on and then 47 cents in parts, let's see if it actually shows a picture on the screen. Yes, there is the Vizio logo.

It's working, it was a lot of fun, so overall I spent 150 on the TV. 47 cents for the parts 4.99 for shipping for a total of 155.46 the TV has been working great and I have not had any problems with it our family has been enjoying the 4k experience at a fraction of the cost of a TV new my name is rhys and I hope you enjoyed this video all the time people throw away or sell broken items and a whole new world opens up when you know how to repair them and you save a lot of money too so consider subscribing and clicking the notification bell.

And joining me on this repair journey, I now have a special question for you, since I like to fix things. I would love to hear from you what your favorite repair has been. Post the answer or any questions or comments you have. Below in the comments section. I would love to hear from you and see you at the next repair.