This is how you win customer trust, by being helpful and honest. Great work as always!!!

This man is a legend we must protect him with all costs no body mess with him I literally learned how to fix motherboards and devices from him he is a legend thanks alot for The new trick I saved alot of time

One good tip for the UV light is that more than power the wavelength is important. Violet light is 400nm. Many UV flashlights are 395nm, which is borderline. Excellent resin curing lights are 365nm and are still very affordable.

10:58 That was awesome, thank you for the lesson.

Your honesty and integrity is beyond questioning and displayed daily. If you were in my locality, I'm sure I would be a nuisance and always be in your shop. The user complaining about solder mask sounded a little frustrated, which is natural. You make almost every aspect of electronics look effortless. Respect.

Mr Alex goes above and beyond for his customers, this video is right under the solder mask in their website as well and it just shows the integrity, purity, and honesty of this guy to just do the right thing.

learnt so many soldering techniques from your channel. I'm a MacBook board repair tech from India. big ups to you..

"Awesome technique hard in 3 seconds" Sounds like an ad I saw once on a certain site...

So #1 , I directly applied it to the board so I did have too much, #2 there WAS flux residue on the joints that I was masking, #3 my light IS infact PURPLE but doesn't look quite like yours so I'm leaning towards mine not really being UV, #4 thank you for the video and I apologize for saying that I got different solder mask when it was user error that was the problem,. I love your channel Ive binge watched every video and I've bought alot of stuff from you guys and it has all been quality, so thank you

And this is what makes you a great teacher, keep the great videos coming. I bought $72 of items from you to support you guys and all the hard work. Thanks

Solder mask is basically UV resin, which heats up to cure, so that’s why that hot air trick works. It works with any type of resin you want to cure faster actually.

I really like that you sell what you use across the board. . You know it's a good product and does the job you are doing. Selling what you trust speaks to your integrity. Thank you for making these videos.

I really appreciate you! You seem a kind man sharing knowledge and technique to everyone else for free, selling only the things you know are good for you first. You are optimistic, always smiling and a good professional! It's really bad you have so many subscribers but so little appreciation! I know you don't do it for likes! I wish you good health!

You are always helpful and honest with your customers and viewers 👍👍

Thank for teach us, now I’m learning more faster as what you taught us… your great teacher for those work. I’m going order your supply kits this Tuesday. I can’t want doing it myself do repair any broken t.v, or pc. By myself and watch all your video daily.. I appreciate it. .. I’m deaf n from Alaska,, I hope I’ll get all successful job like you do, so I’d like make own small business from beginning. Your Genius… love your work,, God bless all…

I watch your videos almost every time, before going to sleep and after getting up, while eating. Because you're honest with us. ALLAH bless you more

The hot air trick is amazing. Thanks for sharing this.

Best channel, this guy is smart!

You were born to do this job,nice watching your expertise,keep it up-god bless you and your family.

Sir you are a gentleman and a scholar 👨‍🏫. If there were more people in the world such as yourself with your morals and standards this place would be so much more a happy place to live. I wish I had found your channel the day the first video was posted. Sure would’ve sped up my learning and surely cut my mistakes and goof ups by at least 75%-85% if not more. Thank you for all that you do sir!!!!!

Beautiful form of education. obviously our young and up and coming techs should learn from you my brother ( a Master of a important trade). I will bring my boy to your shop when ever we come to America. If you don't mind I want my son to learn from you for maybe for a week. teach him how to understand and know the important of tools Understanding circuits and what is on them with there functions and use. We love your work my bro. God bless and keep at the top...

Learning your techniques are a huge help with my job currently. I am trying to get into microsoldering for repairs like hdmi replacements and charge ports and videos like these are super helpful.

That looks like my switch :o I can't wait

This, perhaps is the only channel where I continue watching the video even after the advert in the middle

Thank you very much for the tip. It will save me a lot of time. Greetings from Portugal 🇵🇹

Yesterday i repaired a friend's old Edifier 2.1 speaker. It wasn't better than factory but We're getting there! Thank you!

Hard in three seconds? Sounds like me 😄

I have ordered material from your shop before and will order more, thank you for the service and the information about your products and how to utilize them, last but not least a great big thank you for your videos

Thank you for the video. I had been looking for a good video with an experienced professional that could just show how this stuff works and you did exactly that and more my friend. Keep up the good work

Great trick! Thanks doing a nintendo switch repair right now involving trace repair, this will help to go over.

One of the most educational videos I've watched on the channel...you have no idea how many times I've tried applying solder mask and failed...I thought the thumbnail was click bait...Good Job!🙏

Like always, a true master's in works. Thanks for the tip

Wow! I never would have thought of hot air and UV simultaneously. Thank you so much!

When you trust what you sell to public. I just learnt something new and thanks so much for sharing

Excelente técnica amigo, se aprende mucho de usted. Dios lo bendiga siempre junto a su familia. Saludos desde el puerto de Paita-Perú

Wow.!!! THANK YOU for this great tip. Many times I have had problems with UV mask... now I tested yours 100% OK ! THANK YOU

Your knowledge is unique, it’s so satisfying to watch your good work!

You are the best teacher. Regards from Greece.

Thanks Alex. God bless you and your family.

You are great and honest man full of knowledge willing to share. Thanks for that. One of the problem with solder mask can be the amount of it. All we see is under the microscope and it seems big, but in realty it's smaller than rice.

i appreciate the channel im a hobbyist and your videos encouraged me to get an smc rework station. cheers

Awesome video man! This is exactly what I was searching for.

You ARE a Maestro, my friend!

Thank you so much for sharing your knowledge! Learned a lot today! I got a problem, maybe you can help with this one too: after soldering I use Isopropyl alcohol for cleaning, I tend to use a designated toothbrush, sometimes Q-tips and other hard brushes. My problem is, that after the alcohol has evaporated, I got kind of a sticky residues on the PCBs, that feel very disgusting. I even tried with paper towels, it is so hard to remove those sticky residues. Do you have a tip or technique how to solve this problem? Best wishes and a thousand thanks, Michael

I realized your secret when you did the PS5. I could hear the hot air. Thanks for the tip.

You are a perfect person, my friend...

It would be really cool if you sold 'starter kits' for easy ordering.

Gotta have the right tools and know how to use them. Great show & tell Vid including new tools. Thanks for sharing your secret techniques!!! 👍

Are you kidding me? How did I never figure out heat and UV? Simple you're brilliant man!

Absolutely ingenious! Thanks for sharing to all us technicians.

متميز دأما يعطيك العافيه بحس حالي بحضر محاضره مفيده لكل فديو لقناتك

Thank you Alex ! Very helpful, all your videos ! God Bless !

Holy crap, that hot air trick made my day. Thanks!

Thanks so much! This gave my an idea. My soldermask wouldn't cure at all.. But when you metioned the hot air I knew what was wrong.. I was using soldermask in 15 degreese C, way to cold, so I turned up the heat in my DIY room and booom! Soldermask cured in 10 seconds. LoL

Pretty sure every viewer laughs and smiles when you look at the camera and smirk. lol

UV curable substances have long polymers chains that easily slide past each other as a liquid (or paste). UV photons break bonds in these polymer chains; visible photons have too little energy to break the bonds. These dangling ends will re-bond -- sometimes with other chains; it is this "cross-linking" that converts the liquid into a solid. By heating the liquid, you reduce the probability that the same two ends will re-bond and increase the probability of cross-linking. (Heating also evaporates the liquid solvent more quickly, but cross-linking is the key to UV curing.) A certain cross-link density (number per volume or number per weight) converts the liquid to solid. Exposure is intensity times time. Intensity is higher close up (I~1/r^2) so holding the light closer helps. The rate that bonds are broken is proportional to intensity (brightness), but it is also optimized when the energy in the photons (wavelength) matches the bond energy well. Since thick puddles have more volume (and weight), they need a larger total number of cross-links and a longer exposure than thin puddles.

Im just geeting better in soldering with this channel, keep up the work sir👍

Great video keep it up. Love learning.

Excellent tip with the hot air thanks for sharing Alex .

I always appreciate your videos brother. Sharing is caring!

I have this handler. Is awesome! Nice products you have to offer. My shop is equipped with everything you use :) you're our reference

thanks for the tip.Very much appreciate it!

Hi sir your video inspired me always I like the ways you give examples 👍I like this chenal on KZfaq.

ha thanks very much,had similar problem with uv mask,searched all corners of you tube got the solution now ,

Real practical man. I learn so many things from you respect and thank you.

Well, I have to point out that some people with those big UV lights are usually doing more than putting solder mask over a repaired trace, they're usually making whole boards and need the coverage that a tiny UV light just won't do and that is what they have on hand if they do happen to repair a trace.

Love the easy way you explain the way to do it. 👌💪💪

My uv light died the other day, and my wife laughed at me when I put my board in her tanning bed. Lol! Worked perfect.

This is full of hot air 😏 Awesome tip 👍👍

Thanks for sharing that trick with the solder mask, that was really impressive to watch. I’ll definitely be using that technique in future. Great video as always👍

Can't wait to see 1 million subscribers very soon.

every i watching U fix it everything, so that inspiring me to fix everything too. but I thing its not easy like look your video..

Very nice video, i appreciate it very much. Everytime you do such i explaining-video, i learn so much. Thank you, thank you. Greets from austria

Having worked with similar products that react to UV, I know it's so hard to get a ball park indication on UV Curing conditions. They don't specify intensity, frequency or whether it needs a broad spectrum UV. Terms like powerful or more powerful are totally useful for quantifying a UV source.

Alex doing Magic with Solder Mask and Hot air!!!!! thank you Alex!!!

I use the same solder mask and UV light and stuff that you use, but this was still very helpful, thanks!

I see "Hard in 3 Seconds" and I clicked

Great advice! I've learned a lot from your channel. Thank you sir!

Thank you for sharing your secret on how to cure solder mask faster :)

Awesome tecnic on the solder mask, and i was wondering why it was taking to many time, when in others videos was taking 3 seconds, now we know the secret, and the power station is awesome to, i have one, and not only shows up how much ampers does it take, but also gives the exactly ampers that it needs, for exp. I have a older phone that i use only 0,5A, all time, other phone it starts at 2A, and as it goes charging passing de 50% starts lowing the ampers given to the phone, i believe is some sort of protection to conserve and explan the life time of the battery.

Thank you for sharing your ideas

shining that light at the camera is damaging my eyes.

UV light is just the radical polymerisation reaction initiator. Reaction speeds double for roughly every 6 degree centigrade increase in temperature. So yeah raising the temperature with a 300+C air gun is going to get you this result :). You can apply this technique to other reaction systems to speed them up, such as curing two part epoxy

Thank you so much for sharing the hot air tip :) Very cool!

Greetings From Sri Lanka...Very Helpful Vedeo... Keep up The Good Work... Love Your Vedeos...❤🤘

Well I do not comment on videos, but this is very useful tip, thank you!

Hi Alex, those lines on the metal blade handle are called knurling. It’s a metalworking technique

Wow awesome Trick I almost gave up with the problem

Great job, love your videos.

Hi, By the way great videos from your repairs I am learning a lot and thanks for that. I want to buy that solder mask but I need to do a repair because I have a board from a graphic's card that someone try to take out the memory and in the end one off the pins came out. I already see and repair that but I want to put some solder mask on the top to make sure that when I put the new memory the pins does not move. And I am asking if that solder mask will do the job and does not became liquid again with the temperature. Can you help me with that? thanks best regards and great job

yeah makes total sense, UV breaks the radical initiator into the chain starting free radicals, after that, its all chain growth in the main polymer which is temperature dependent, not light dependent

Great sharing ❤

Always priceles information.

10:58 awesome tips... Thank you brother...

Hello, @northridgeFix I'm a huge fan of yours & especially your works. I watch your all videos timely and learning a lot. Can you please make a video for me on how to use a multimeter? how to test components on the circuit board is a humble request. waiting for your reply and also your next video. your hugest fan from Pakistan, Thank you.

Thanks for the idea!

Maybe the resin reacts differently to different UV wavelengths? Like UVA, UVB and UVC.

Love it. Thanks for the great tips.

watching sir nice tutorial

The best channel 👍