First and foremost, Welcome to the Badcaps Capacitor Search Engine & Forums!

New members that have activated their accounts have limited access to certain features of the site until established. Members with zero posts have no access to the private messaging system. Also, members with zero posts may not edit certain profile attributes, such as signatures. New members also may not create new threads. However, new members with zero posts have full access to all technical information contained on this forum, and that also includes attachments (images and files that other members have uploaded), and new members that have activated their accounts are free to post replies to existing threads. If you wish to create a new thread, the fix is simple! All you need is ONE post to be able to have full unrestricted access, and that can be simply posting an introduction of yourself or say hello in THIS THREAD. This may seem a little strange, but it helps keep spam and abuse curved. Please note, that it may take up to one hour from your first post for the limits to be removed. If you make a post and don't immediately see the restrictions gone, be patient. The promotion system updates every hour.

Please complete your profile after making your first post, with your name, locale, and other info. It's nice to know members on a first name basis, and know where they're from. Makes for a much friendlier environment!

Posting rules for this forum will be STRICTLY enforced by myself as the owner/administrator, and my moderator crew. IS A BUSINESS!!! If you are a servicer, service center, or vendor of any kind in the computer/capacitor industry, you are NOT permitted to advertise, link, promote, or plug your business on this forum in ANY way! NO EXCEPTIONS!! This includes asking for "donations" in exchange for BIOS passwords or tech advice for anything! If I see you doing that, your post will be edited or deleted, and you warned. If it happens again, you will be banned. The only exceptions are the references to the companies quoted in the FAQ which the administration have added for the convenience of those around the world who have difficulty to source caps for their repair.

This also includes using this forum's private message system to solicit business. Members, if you receive a PM from anyone offering repair services or components, please alert me immediately! Myself or any of my moderators, will never private message a user soliciting business, for, or any other servicer/vendor. If you PM me about repairing your device, I will reply and take care of you, however, I will not message you first.


Posting rules:

This forum was created to be a technical support forum primarily for the do-it-yourselfers who choose to repair their own boards. Any and all technical questions are welcome!

1) Please use the SEARCH feature!! Your question may have been answered in another thread! Please search first and see if it has!

2) When posting a technical question, be as detailed as possible in your thread. The more information we have about your specific problem, the better we can answer your question.

3) Please use COMPLETE sentences, punctuation, and grammar! Nobody is perfect, hence, a spelling error on occasion is no biggie. However, posts/threads that are unreadable will be deleted. This includes any and all forms of 'ebonics', leet, chatroom jargon, and 'text message' shorthand and slang. This forum is not a chatroom/text message, please use full words and complete sentences.

4) Keep discussion on topic!! DO NOT HIJACK THREADS! It's easy to do (I've done it myself a few times...) Lets try to keep it down to a minimal!! If you have something really off topic, that's what the lounge is for!

5) Keep things civil! There will be no tolerance for flaming, bashing, hateful remarks, racial remarks, adult material of ANY kind, and so on.

6) THE LOUNGE RULES! The lounge is a place for off topic chit-chat! If you post something that might be considered questionable or something you don't want kids to see, or something you can't view at work/school, etc, please label that thread *NWS* or NOT WORK SAFE in the thread title as a warning. The Lounge is NOT moderated, anything is welcome... Feel free to post rants, jokes, cars, hot women (remember the NWS warning in the title), or just about anything within reason. It's an open forum! Please refrain from participating in political topics if you have thin skin, they can get heated sometimes!! Remember that we have members here from all over the world, with many different views and cultures. Political debates can turn really ugly, and really fast, and if they degrade to personal attacks and useless banter/bashing, moderator action will ensue. I want this forum to be a safe haven for technical discussions from all walks of life, so lets keep off topic discussions civil and friendly.

7) Spamming and spammers will NOT be tolerated or accepted in any way, shape, or form! Spam bots are instantly and permanently banned, and their threads deleted! The mod crew is really quick to zap spammers, we typically pop them before they even get to post. This also includes regular members as well. be courteous and not post spam. This includes links to off-site information that's not relevant to the thread at hand. Do not plug other websites, forums, or businesses in your signatures. You may do so in a thread if the off-site link you're posting is relevant to the topic, but otherwise, don't do it. If you see a thread which clearly a spam bot posting that we have not removed yet, DO NOT click any links in it!! Simply click the 'report bad post' button, and it'll be taken care of, usually within minutes.

8) Account removals & closures: Since no personal information is given in the creation of your Forum account, requests to remove and/or delete accounts will be declined. Any requests for removal of threads & posts you created will also be declined. The reason is the missing posts can/will leave threads incomplete and fragmented. For the threads to be of help to others later on, information can't and won't be missing. However, if you inadvertently posted personal identifiable information in a post (such as an email address, real name, or phone number), please contact a staff member. In those cases, the post may be edited or removed, at the staff members discretion.

That's about it for the rules, the setup here is pretty loose. However, if you're caught violating any of the rules above, here's what will happen:

First offense: Warning by me or a moderator
Second offense: Banning for 1 day
Third offense: Banning for 3 days
Fourth offense: Banned permanently.

If you do something really dumb, or are just a troll, I will skip the warning and the temporary banning, and ban you permanently!

The rules are pretty cut and dry... However, if you have any questions about this policy, feel free to contact me.
See more
See less

Aixun T3A overshooting?

  • Filter
  • Time
  • Show
Clear All
new posts

    Re: Aixun T3A overshooting?

    Yes, general comment.


      Re: Aixun T3A overshooting?

      Ahh! Now I get it! I don’t use the ground wire! I don’t ground to the device I work on to the soldering station ever. What pencil station do you have? I have the fancy one where the tip turns off when the pencil is resting in the holder.
      Last edited by CapLeaker; 09-17-2023, 09:06 AM.


        Re: Aixun T3A overshooting?

        That ground I thing is either to go to ESD device or to a docking station. Not to ground your PCB with


          Re: Aixun T3A overshooting?

          Ok but that was only an example, ignore that it comes from the station and imagine it comes from the mains socket, the result is the same.

          Scenario 1: My motherboard is on a GROUNDED preheating station. I cannot un-ground it!
          The motherboard will inevitably touch the pre-heater hence the motherboard is grounded.

          In that scenario, I see the issue you see in the video. This is how I discovered it. I was soldering on a pre-heater.

          We also have the 1V 1.5A at the tip which is concerning, IMHO.

          Can I possibly be the only one on the planet noticing this "design feature" with this very well reviewed station?


            Re: Aixun T3A overshooting?

            I am going to try that with my solder station tomorrow and see what happens, if I can find a plug to fit that jack in the back.

            I don’t have a pre-heater, just use the brute force of the T245.
            If memory serves me right there are ungrounded pencils for it too.
            Very interesting feature, for sure. My Weller WD-1 has a transformer inside.


              Re: Aixun T3A overshooting?

              The crocodile lead came with the station so you might have it somewhere - and thanks for testing for me!

              Pre-heating is mostly for BGA rework - I wish the T245 could do that

              Once a BGA chip is pulled I need to clean the pads. The board is still going to be on a pre-heater at that stage. And at that point I would be concerned about injecting 1V into components which might not like 1V at 1.5A to be honest.

              Anyways the pre-heater is an example. I'm sure there are tons of situations where you might have ground connected to the item you are soldering.

              And again the measured voltage is a concern IMHO.

              thanks again!


                Re: Aixun T3A overshooting?

                so this is related to the sleep-function?
                can it be disabled in the menu's?


                  Re: Aixun T3A overshooting?

                  sleep function?

                  What did I miss? Are you suggesting it could be related to the sleep function?


                    Re: Aixun T3A overshooting?

                    little update: I tried FW 1.34 and... well the "NO TOOLS" error is not there anymore but I can see the power jumping 0-100% most of the time on those "affected" joints. The display keeps saying 350C but if I quickly measure the tip it's at 450C. +100C overshoot.

                    I feel this is a design flaw they're trying to hide by software.

                    And yes, the handle is making a much quieter buzzing noise with 1.34.

                    I really can't believe I'm the only one reporting this online.


                      Re: Aixun T3A overshooting?

                      so the buzzing is the tip/cartridge, not the base?


                        Re: Aixun T3A overshooting?

                        yes it's coming from the handle.

                        This is the video I have sent Aixun for review.


                        That said, @Capleaker, I won't be able to go back to my standard iron. For fun I tried de-soldering a power connector from an XBOX 360 board. Half of the pins were the shell of the connector itself. It's taken a while, with braid, but I did it and didn't damage anything. Impressive.


                          Re: Aixun T3A overshooting?

                          I think your T3A is faulty.
                          Indeed there was a cable that came with it, just mine has banana plugs on both sides. I plugged that in, put a crocodile clip to it and grounded out the outside of a USB port, then started solder around on the case and everywhere else, no problem. Grounded out an old VHF tranceiver and I solder around like nobody’s business. I did exactly that what you did in the YouTube video. My T3A works just fine, as it supposed to. My T245 pencil does not hum and that ground point on the back of the T3A is connected to the earth pin on the AC cable. I measured abou 0.05VDC between the hot tip and that ground point.
                          So yours must have “special features”. Lol
                          Attached Files
                          Last edited by CapLeaker; 09-18-2023, 06:28 AM.


                            Re: Aixun T3A overshooting?

                            well that's great news I guess! What FW are you on?

                            Let's hope Aixun replies with something helpful!

                            Really appreciated the time you spent on doing this test for me!


                              Re: Aixun T3A overshooting?

                              Running firmware 1.26


                                Re: Aixun T3A overshooting?

                                Maybe I should try that LOL!