Repair Huion graphics tablet stylus

What to do if the stylus stops holding a charge?

Today I will tell you how you can easily and inexpensively repair a Huion stylus that requires charging to work.

Styluses

Graphics tablets have two types of styluses – active and passive. The principle of operation of the first is that it needs power to function – an energy source such as a battery or accumulator. But sometimes the manufacturer makes it impossible to easily replace the power source. This is where we come in!

This method has been tested on the Huion Kamvas GT-191 and Huion GT-190 stylus models . Using the latter as an example, we will analyze today how it can be repaired. For repair, we will need:

• Problematic stylus
• Tweezers
• Plastic card
• Super glue
• Lithium battery with a voltage of 3.7V and a capacity of 80 mAh
• Soldering iron

YOU PERFORM ALL OPERATIONS AT YOUR OWN DANGER AND RISK! THE RESOURCE ADMINISTRATION IS NOT RESPONSIBLE FOR YOUR ACTIONS.

Steps

First of all, we need to open the stylus for repair. This process is very difficult, because the stylus is made entirely of plastic, so if you open it carelessly, you can damage it. As in the case of repairing a gamepad, I will provide a link to the starting position in the video instructions and a comment on what and how to do it.

Removing the button (02:35)

First, remove the button. It is best to pry it off with something like a plastic card. Using knives or other metal objects is not recommended, as you may damage the case.

Separating the hull halves (03:21)

Next, we need to separate the two halves of the case, where our battery and main board are hidden. It’s hard to explain from the photos, so I recommend watching a fragment of the video how I did it. The case is mounted on glue, attempts to melt it with a blowtorch did not lead to positive results, so I recommend opening the case slowly, carefully, according to the same method as in the video.

Separating the pen nose from the main body (06:58)

By pressing a kind of “button”, we finally separate one half from the other and begin to pick out the glue from the stylus.

Getting rid of glue inside the stylus (07:22)

The main work is done. Next, to get the battery, we need to get rid of the glue inside the stylus, on which it is attached. This should be done, again, carefully, as an option with tweezers. We remove the glue piece by piece until the battery can freely exit the stylus body.

New battery (12:54)

The battery of the same format used in this stylus, namely 75300-1S1P, is quite expensive (in the case of this stylus, almost like a stylus). Instead, I preferred to take a regular “package” battery (I have it called Hexunbaba 80mAh 3.7V 400930) with the same parameters, which, although it turned out to be a little wider than the original, is thinner and a little shorter. This will allow you to install it into the stylus body without any problems.

Battery desoldering (14:09)

I unsoldered the original battery from the board at a soldering iron temperature of 250 degrees. It is advisable to apply a little tin to the tip so that the solder on the board comes off more easily. Immediately after unsoldering the first contact, wrap it in electrical tape or adhesive tape so that it does not short with the second contact.

Soldering a new battery (15:07)

The order of soldering the new battery does not matter, the main thing is to correctly observe the “+” and “-” of the battery. After that, it is highly advisable to check the stylus’s performance, but if you did everything according to the instructions, then it should already be completely working.

Reassembly. Battery (16:06)

Place the battery in its old place in the case and push it deeper using a blunt plastic object. In my case, this is the back of a paintbrush.

Assembly of the hull halves (16:45)

We put the nose part of the stylus back, locking it with the “button” and we can assemble it. The reference point for the compatibility of the assembly grooves is that the Huion inscription on the body should be in line with the stylus buttons (in the video I assembled it incorrectly, don’t be surprised)

Applying glue (17:50)

To keep the stylus halves tightly together, it is advisable to glue them a little. Micro-drops of superglue (just to make it stick) will be good to have on hand so that the stylus doesn’t “come apart” at the most inopportune moment (however, both halves fit very tightly together anyway).

Performance check (21:00)

If the battery was new and it was not lying around, then immediately after our repair the stylus should work without complaints, and it should also be charged from its original cable.

As you can see, repairing this stylus does not cause any obvious difficulties, so if you have all the necessary tools, you can easily repair it and continue using it. This method works exactly with the styluses of the PE330 models and the one that was repaired in the article (from the GT-190 tablet).

You can watch the repair video below.

Author: Sa Crea

Hellmin