Thank you for sharing your research with us! I'm considering getting a T8280, and it was great to learn these lessons through your experience!💌

I like how methodically you approach your work. Its very much hypothesize, experiment, reason about what happened, and repeat until you get the result you are looking for.

Thank you. You did the hard work for this T-8280 preheater.

I found my multimeter's type K thermocouple was much more accurate if I used a small bit of metal tape under the kapton tape. I don't know if it was due to a larger thermal mass or making a good connection to ground, but it got the probe to within 2-4 °C of the IR thermometer. Without it the probe could be 20 °C below the IR. I used approximately a 10mm square of Nashua brand tape from the hardware store that I had around from sealing some of my furnace air ducts.

Nothin ventured, nothin gained. Thanks for the video.

Nice, honest video. It is not as easy as others make it look.

Hi man, I have a UKposts Channel as you and I know the difficulty that it brings showing this kind of process. You keep making excellent vídeos. Congrarulations! Can you tell us how long and temperature are you using to bake motherboard before reflowing or reballing it? Thank you.

The great misconseption about heating profiles is that actually are totally useless in manual process.Bottom preheat at 200C and then heat up the bga until the solder melts and guess what.It is a lot more difficult than initally thought that might cause heat damage to the board,in fact it is exactly the opposite.I use preheating plate and a cheap professional hand held heat gun and in many cases is needed the higher scale of speed and temperature to start the bga to flow on its solder.It depends from the pcb,its size and how many layers has,thermal pads and so on.So the only rule is heat it up until the underneath solder melts and have no worries.

i found that you need to set the heat gun at a much higher temp because of air heat dissipation, about 380~400 for the heat gun. might take some time to get used too but ill work quick

That was interesting!

Hi Tony! What do you think to add "normal" upper preheater (i.e 400W) instead of hot-air? What do you think of using Marlin 3d printing software and hardware for temperature control? Marlin has PIDs autotune feature.

👍

Very interesting... i have a machine i picked up from a company closuer, its older version of something you have, I don;t understand it and instructions are vague... its still not switched on but wanted to see how not to hurt boards especially plastics sockets.. useful

wheres part 2? Enjoy your videos, subscribed!

If you press the Xbox 360 eject and sync button together at the same time it gives you an error code. You press them together four times and the number of red lights will blink differently. You can then go online google or gpt the error code. I believe this can also work for E74 etc.

i removed the bga from a xbox 360 with only a cheap heatgun. But sadly i burned some of the soldermask underneath.

Use a good Hotmail station is the best Tipp here. I started with a cheap 60€ hot air station and the difference between the cheap and the expensive one I now have is huge.

Will these ali express machines work in north american 240v 60hz power?

Suggestion: preheat the preheater to 60-70 degrees and only then put board on it.. 😉 Great measurement and experimentation video! 👍

Please link the funnel nozzle.

Nice video! I believe a nozzle too big with a hot air volume too high. Greetings from Brasil.

good job sir, mainboard kebab

The hot air is crap buy a ir heater 150w it works perfectly

Well... gentleman... After more than... eleven years, I finally found someone with a future in the soldering process, selective / BGA rework process understanding on this UKposts jungle bullshit!!!! I'll keep my eyes on you 😜 And no, you don't have a "decent" preheater, and no, you don't have any "top heater", in fact, you'll have a weird combination for a supercharged... "popcorn machine". 😃 What is amazing is the fact that here on your channel I hear for the first time the words "science", "scientifically" and so on. That fact, that approaches will let you on the right path to understanding the rework process, in fact, to understand the soldering process in general, the selective / BGA soldering in particular. For the moment, I have no time to see the entire video but, I promise that I will watch them entirely. This video (your experiments from more or less... "scientific" points of view), remember me about my research... experiments... my frustrations eleven years ago... When I start my own research to buy a real professional BGA Rework Station. I don't find it. Let me recommend you some... Links... ukposts.info/have/v-deo/caqjbZmrpWthkoE.html - already I have that... in Beta V2.0 stage. 😜 bga-rework-stations.com - here you will have all explications/arguments for all your frustrations... bga-rework-station.com - here, you will have all the explications/arguments on how you can think in a scientific/technical way. Please excuse my English language, is not my native language. Keep it on the same path, be open mind and never forgot, that electronics is science, and technology is not pseudo-science, pseudo-technology. Best regards, Dan.