Any opinions on the AiXun T3A?

[umter]

Only T3A 220V T245 version

[janoc]

I couldn't find any T3B 220V T245 version on Aliexpress. Do you think it is because that configuration is not in production?

The stations have universal switching supplies, I don't think there is a 220V version. They are all the same. Manual says: "Input Voltage: AC85-220V"

https://aixuntech.com/userimages/2022-11/t3b%20user%20manual_en.pdf

EDIT: T3B doesn't support T245 handle. T3B is for the smaller T210 handle. If you want T245, you need T3A station - it is also 200W vs 100W T3B.

[mastershake]

the t3b does need you to choose 110 or 220v i can tell you i have ordered from a number of sellers who have both listed? this store was excellent to order from imo and shipping was actually very fast compared to others. i have ordered from this store multiple times without issues. one issue is they do not offer the t3b model with the 245 handle. only the 210 or 115. for the 245 you need the t3a model. here is a listing for the t3b 210 version. the t3a however some sellers offer both some do not.

for example here is a seller who offers the choice of either https://www.aliexpress.us/item/3256803818902607.html?spm=a2g0o.productlist.main.1.cfaf70f6rooBFY&algo_pvid=24f05e23-189c-4514-87b6-66da12cd6e9e&algo_exp_id=24f05e23-189c-4514-87b6-66da12cd6e9e-0&pdp_ext_f=%7B"sku_id"%3A"12000030340517426"%7D&pdp_npi=3%40dis%21USD%21131.0%21131.0%21%21%21%21%21%4021227d8316778273643327114d0705%2112000030340517426%21sea%21US%21908973240&curPageLogUid=0bcPlDbp6i5P

[yelkvi]

And I have a problem again. When assembling the soldering station, I decided to test it from a 24-volt laboratory power supply. And when connected, the DC/DC converter 24V -> 3V failed. As a result, all 24 volts fell into the circuit.
Bottom line: The microprocessor, display, operational amplifier, DC/DC microcircuit are faulty.
Chinese developers did not provide any protection in case of failure of the controller's power stabilizer.
In the circuit diagram, the author did not indicate the type of operational amplifier. It is possible that this is SGM8541XN5.
I didn't have that. Therefore, I installed SGM8551. I had to replace one resistor. Otherwise, there were unreliable temperature readings.

[janoc]

the t3b does need you to choose 110 or 220v i can tell you i have ordered from a number of sellers who have both listed? this store was excellent to order from imo and shipping was actually very fast compared to others. i have ordered from this store multiple times without issues. one issue is they do not offer the t3b model with the 245 handle. only the 210 or 115. for the 245 you need the t3a model. here is a listing for the t3b 210 version. the t3a however some sellers offer both some do not.

for example here is a seller who offers the choice of either https://www.aliexpress.us/item/3256803818902607.html?spm=a2g0o.productlist.main.1.cfaf70f6rooBFY&algo_pvid=24f05e23-189c-4514-87b6-66da12cd6e9e&algo_exp_id=24f05e23-189c-4514-87b6-66da12cd6e9e-0&pdp_ext_f=%7B"sku_id"%3A"12000030340517426"%7D&pdp_npi=3%40dis%21USD%21131.0%21131.0%21%21%21%21%21%4021227d8316778273643327114d0705%2112000030340517426%21sea%21US%21908973240&curPageLogUid=0bcPlDbp6i5P

GIven that the Aixun manual says explicitly that the power supply is universal, I suspect that the sellers are only indicating that to let you decide which type of mains cable they bundle with it. 110V - US plug, 220V probably Schuko.

Also, your broken links show  a T3A, not T3B. I have T3A on my desk - and that one certainly doesn't come in two different voltage versions.

[c0d3z3r0]

In the circuit diagram, the author did not indicate the type of operational amplifier. It is possible that this is SGM8541XN5.

#

Nope. According to the datasheet, the marking would be "8541".

[yelkvi]

I ordered 8541 from Aliexpress. When I receive the parcel, I will put it in the scheme - I'll see how it will work. For 8551, the 150 kOm resistor had to be replaced with 249kOm. The temperature was incorrectly determined and there were unstable readings of + - 20 degrees.

[nedrysoft]

A follow up on my follow up.

The t3a I bought (well my wife did for Christmas) I was using with a real JBC tip was working great.  I needed a different tip, so tried one that came with it….and it didn’t work, it heated up by 10 degrees and then did nothing else.

Thinking it was a one off, I took another one of the 3 supplied and…same result, flipped back to the original JBC and it worked straight off.

So tried the final bundled tip and that didn’t work either, 3 supplied tips of 3 different styles and none of them worked.

I contacted Axiun who after a few days of emailing told me there was an issue with the batch of tips mine were in, because it didn’t come direct from Axiun they said to contact the seller, and well, life is too short, so I bought a few others to try.

They turned up a while back, but i am away from home, my daughter posted them to me and I tried the new tips and they all worked without issue, they’re never going to be as good a original JBC tips but they work fine and thankfully both the handle and station is fine, I did worry that I had some fault with the station.

[yelkvi]

New firmware 1.31

[c0d3z3r0]

The T3AS was released. I had found that T3AS firmware earlier (https://github.com/snakeeyesinc/aixun_t3a_rev/blob/master/README.md?plain=1#L18).

"upgraded version of T3A with the new integrated design"

https://www.aixuntech.com/product/t3as-allinone-200w-soldering-station-economical-welding-station-with-t245-handle/

[dreamcat4]

on the older v1.26 firmware there is only just 1 feature that i wish would be added (for my own tastes)....

the ability to press a button on the front panel to force toggle the sleep mode. for example if the cradle is not plugged in (or not working) for whatever variety of reasons. then i still want to retain a manual capability to force sleep mode, or turn the heater fully on/off

please let me know anybody if you see this feature added on later firmware(s). would be great to see, was my only ever complains

[yelkvi]

The T3AS was released.....

"upgraded version of T3A with the new integrated design"

https://www.aixuntech.com/product/t3as-allinone-200w-soldering-station-economical-welding-station-with-t245-handle/

"the 200W high power ring transformer" - Have the Chinese abandoned the switching power supply and returned to a simple transformer?

I wonder what's inside the new soldering station.
We will wait for photos of the first buyers.

[Ungolian]

Not sure if this is necessary...  I don't like the integrated stand, I put the base unit towards the back of my bench, and have my stand and tips up closer to me.  It's just a smaller profile of what I have around me.  Second (this doesn't apply to everyone), I'm left handed, and my microscope at work is also mounted on the left side. Clearance is already an issue to the point where I'm considering sawing off the back third of a handle so I have more vertical room all around the microscope (not just under it).  Third, why do people make such a big deal about the power supply?  It works.  What more does it need to do?  Sure, if you're looking at the output with an oscilloscope it will look better, but what is the real-world difference?  You turn it on, and it gets hot.  It's not complicated.  Obviously, the control board has more going on, but will a toroidal transformer and different PSU make that perform any better?  Not really.  Aixun is advertising better temp accuracy, but the T3A is maybe +/- 5 degrees.  I can live with that. The on/off is still on the back, I would've hoped that they made it more like the T3B.  Overall, I'm just kind of scratching my head and wondering if Aixun isn't trying to reinvent the wheel.         

[mastershake]

as soon as they ship it out ill have more info they are sending me one (when they start shipping them). I agree though I just don't see the need for this. I will def not "upgrade" my t3a's to these I personally hate the stand on top like that. i was told there are a few other things coming soon also and If what I was told will be correct im just left the same scratching my head wondering why. maybe just to have something "new" or for cost savings i.e. shortage of parts etc. but I did contact a few larger resellers I deal with and none of them have any info on it yet

[mastershake]

New firmware 1.31

interesting its not listed on the updates page ill have to check the t3b, 420d, p2408s etc

[yelkvi]

Download the new version of Aixun. You will need to create your account. The program checks for updates at startup and, if necessary, downloads them. Unlike the previous version, you can not only update the firmware, but also go back if you do not like the new firmware.

[mastershake]

one issue with the new version of the program i found. if you have more then one of each station (example we have 12 t3a's one on each bench etc) once you program one of them it created a folder and will not let you upgrade another station. close the program fully then you have to open the install folder (typically program files x86) then open the aixun folder then open downdata and delete any of the folders there. you can leave the 3 files alone. but what was happening was the new version would say already up to date no matter what version tried on a different station of the same model (and even did it going from the t3a to the t3b) deleting that folder then reopening the program will then allow you to program another station. then repeat for each one. ive sent them an email letting them know about it. i just updated the t3a's, t3b's, t420d's and p2408s's we have. was a real pain having to do that every time. tomm i have to do the other 3 t420d we have since those are at the other office.

and the p2408s will not update on the new program version for some reason i had to use the older software to get it to 1.26 then the new version would work in case anyone has one of those.

i really liked the old aixun updates web page though instead of having to check in the program all the time to see which is current. that made my like a lot easier so i could check once a week and upgrade as needed with as many stations as we have running.

i also noticed a few small issues with 1.31 for the t3a i let them know about also mostly graphical and spelling though.

[homer2020]

Hello, Does anyone have a PCB design for this soldering station or know where to find it

[c0d3z3r0]

Hello, Does anyone have a PCB design for this soldering station or know where to find it

Here are the schematics, but I guess you mean the layout?
https://github.com/c0d3z3r0/aixun_t3a_rev/tree/master/schematics

[homer2020]

I mean the design of the PCB from this project. The file aixun_t3a.kicad_sch opens in kidcad and the file aixun_t3a.kicad_pcb after opening there is only a frame and no PCB. The diagram lacks the values of capacitors, types of transistors and diodes. You can ask for their values

[c0d3z3r0]

The file aixun_t3a.kicad_sch opens in kidcad and the file aixun_t3a.kicad_pcb after opening there is only a frame and no PCB.

Yep, bc I only RE'ed the schematic. PCB would be a pita. Feel free to contribute

The diagram lacks the values of capacitors, types of transistors and diodes.

Right, that's bc I didn't want to desolder them for measuring.

You can ask for their values

What do you mean?

[homer2020]

I thought you might know the values of these elements. If these values were known, I would try to design a PCB for your system. Maybe it would be possible to fit these capacitors in the system.What are the values of Vin and Vcc

[heygeorge]

They also new released AiXun T3BS. How about the new features compare to the T3B?
https://www.aixuntech.com/product/t3bs-integrated-75w-best-soldering-irons-and-station-for-electronics-repair-of-2023/

[dreamcat4]

maybe they fixed the ESD protection. to not break the GPIO pin. other than that... it seems rest is mostly just cost reduction measures

But by personal user preference the separate stand or integrated one. Different set of pros/cons

[IreuN]

Hello guys!

First of all a new update came out!

I've took the time and fixed the changelog page, now you can see new as well as old versions, also I've added a link to download new updates.
You will have to open the download link in a new tab, as modern browsers blocks such downloads that does not use SSL from an SSL page.

https://ireun.github.io/aixun-changelog/#t3a 

Also I have a question - my handle sometimes bugs out, the base unit tells me that the tip is not connected, or that the handle is not connected, or that the tip is connected despite that it is not. It seems to happen when 'shaking' the cable - is it normal?

Also I got a unit with a 'QC certificate' with a 16.03.2023 date on it. It seems that they have changed to SMPS PCB. Unfortunately I could not pull out the PCB to take better photos, as it seems to be glued on the underside or something. Take a look at the photos. I can see there are more caps, there is no heatsink ( probably the case acts as one ) and that there is a 2nd output header, directly connected to the 1st one..