Repair of the main faults of the screwdriver

It can seem like your entire toolkit is missing a crucial component when your reliable screwdriver breaks down out of the blue. It can save you time and aggravation to know that many common screwdriver problems are simple fixes. Whether using a manual or electric screwdriver, it can be quite helpful to understand common issues and how to resolve them.

We’ll examine the most common problems that can arise with your screwdriver in this guide, along with workable fixes. We’ll go over the best ways to fix problems ranging from power and battery life issues to chuck and drive mechanism issues so you can use your tool again. This post will assist you in efficiently troubleshooting and repairing your screwdriver, regardless of whether you’re a do-it-yourself enthusiast or just need to fix a few screws around the house.

By identifying typical issues and offering precise solutions, you’ll be prepared to manage the majority of issues on your own. Let’s get started and restore the original functionality of your screwdriver.

Fault	Repair Solution
Battery not charging	Check the charger and battery contacts. If dirty, clean them. Replace the battery if needed.
Drill bit slipping	Tighten the chuck properly. Replace the chuck if it’s worn out.
Motor overheating	Let the motor cool down. Avoid using the tool continuously for long periods.
Stripped screws	Use the correct size and type of bit. Apply steady pressure while driving screws.
Trigger not responding	Check the battery charge. If the problem persists, the switch might need replacement.

The main faults of the screwdriver and their causes

An internal drawing of the battery-operated device can be found below.

Both collector electric motors and brushless motors—motors without electric brushes—can be installed in screwdrivers.

1. The device does not work. First of all, the electrical plug or cable may be faulty, the battery may be completely discharged or faulty. This problem can also be caused by burnout of the motor windings, a faulty start button, worn brushes.
2. When the device is running, it sparks strongly. There may be a faulty anchor or motor collector, as well as problems with the brushes.
3. The battery is quickly discharged. You will need to check the batteries included in the battery pack using a tester.
4. The device turns on spontaneously. Most likely, the start button is faulty.
5. The motor brake does not work. In this case, you need to replace the button or transistor, since these elements are responsible for braking.
6. Play in the chuck. Most often, beating is caused by curvature of the gear shaft.
7. The ratchet does not work. Possible causes: wear of the ratchet lock petals, breakage of the pins or ratchet spring.
8. The chuck is spinning. A malfunction of the gearbox, namely its gears, can cause a situation when the chuck slips. Also, a malfunction of this unit is the reason that the running engine does not turn the spindle.
9. The chuck is jammed, you can"t unscrew and pull out the drill or bit. As a rule, the clamping jaws jam due to insufficient lubrication or breakage of the internal parts of the chuck.

Only after disassembling the device can all defects, with the exception of the electric plug, be rectified.

How to disassemble a screwdriver for repair

To dismantle the device, take the following actions:

• disconnect the battery pack from the device body;
• unscrew all the fasteners holding the 2 halves of the device together;

• remove the upper part of the body;
• remove all the contents from the device body;

• carefully disconnect the start button from the body, without damaging the wires connecting it to the motor;
• remove the speed switch;
• disconnect the motor, gearbox, clutch and chuck by unscrewing 4 screws;

When the jaws are unclenched, you can see the screw inside the mechanism, which needs to be unscrewed in order to unscrew the chuck. Since the screw has a left-hand thread, you should unscrew it in a clockwise direction. The cartridge must then be turned to the left (right-hand thread) by unscrewing it from the gearbox shaft.

Diagnostics and troubleshooting of the electrical part of the screwdriver

The first thing you should do if you have a battery-operated device is disassemble the battery pack and check the batteries inside. Blocks can be classified as collapsible or non-collapsible. In the second scenario, you will need to slowly pry open the area where the block’s walls are adhered to one another with a screwdriver.

The voltage on each of the "banks" needs to be measured next. Every battery has a label on its body that indicates its voltage rating. As stated, but only for functional batteries, the voltage should be marginally lower. The voltage produced by defective batteries will differ significantly from the rest; therefore, they must be replaced. You can buy new batteries online.

It’s critical that they be soldered correctly, that is, in the following order: the plus of one battery should be connected to the minus of another, and the minus of the next battery should be connected to the plus of the second, etc.

In the event that you possess the Network screwdriver, the test algorithm will be somewhat altered. First, you must raise the apparatus’s body and take out one half of it. After taking the tester, "call" a cliff with the power cord. If the cord is in good condition, you should check the start button. If there is a circuit on the output of its contacts, check it by pressing a button. The button will require replacement or repair if it is malfunctioning. We’ll talk about how to accomplish this later. If the button is good, the engine or electrographs may be the issue.

Repair of the button

The battery screwdriver’s electrical circuit is shown below.

The diagram indicates that two of the battery’s wires are appropriate for the button and that the other two wires go to the engine. In addition, the button is connected to three wires from the transistor that controls the revolutions. It is necessary to disassemble the screwdriver button in order to comprehend its mechanism. You can leave all of the wires leading to this component unsoldered. They won’t obstruct the disassembly process.

Take out the red pressing mechanism from its resting place. Make sure the joke doesn’t break by carefully rotating the part in the opposite direction from the button while doing this.

Remove the button cover after that. Using a knife and a screwdriver, pry and push out the latches in the locations shown by the arrows in the figure to remove the cover.

The opposite compartment will be visible once the cover is removed. However, the button mechanism will remain unusable. Separate the two elements (shown by an arrow in the following figure) with a soldering iron.

Remove the cover that covers the compartment containing the device’s switching mechanism after carefully taking out element number 1.

Extract the mechanism from the case while grasping the return spring.

You can see worn contact pads in the malfunctioning button.

The poor quality of the metal causes contact pads to wear out quickly. As fine metal dust from worn contacts builds up between them, the pads become shorted. The result is that the gadget turns on by itself.

To get rid of the metal dust, apply alcohol-soaked cotton wool. If that doesn’t work, you can use a knife to scrape it off. Following these actions, the gadget won’t turn on by itself anymore.

Should the speed controller stop functioning, it indicates that the transistor has burned out and needs to be changed.

Replacing the brushes

Bending back the "whiskers" on the end of the housing will require you to disassemble the engine in order to inspect the brushes.

Next, lightly tap the engine shaft with a hammer to force the rotor out of the housing.

In this instance, take off the cover covering the electric brushes first.

The collector’s race is revealed in the following image. This indicates that brush dust has contaminated it. Engine power decreases and brushes spark due to contamination of the collector and the grooves between its plates. It is required to use alcohol-soaked cotton wool to wipe the collector and a needle to clean the grooves.

The image that follows depicts the appearance of a tidy collector.

The brushes will need to be changed if they are worn out. Certain screwdriver models are hard to find with original brushes for sale. However, you can locate brushes with the right size, cut them with a sharpening machine, and solder them to the brush holders.

It is occasionally necessary to saw a groove in the brushes in order to replace them. Depending on how they are fastened, yes.

Use this video to get a better understanding of how the brushes are changed.

Engine brake repair

When the start button is released, the engine brake stops the anchor from rotating. This function is accomplished in screwdrivers by short-circuiting the engine’s plus and minus when the button is released. Large-scale self-induction and spindle lock (accompanied by a great deal of sparking from beneath the brushes) follow as a result. It will be necessary to replace the start button or regulating transistor if the engine braking is inoperative.

Although using screwdrivers to fix common problems can seem intimidating, most problems can be solved by you if you have the right patience and approach. You can use specific solutions to restore your screwdriver’s functionality by determining whether it’s the result of a broken battery, an issue with the motor, or general wear and tear. Performing routine maintenance, like cleaning and inspecting the battery connections, can stop a lot of problems before they start.

When attempting to troubleshoot a malfunctioning screwdriver, begin with the fundamentals. Verify that the batteries are correctly seated and charged. Examine the motor and gears for any indications of damage if the tool is still not working. Sometimes a worn-out part or a loose connection needs to be replaced. With the right tools and knowledge, most repairs are simple to perform.

Recall that maintaining your screwdriver entails more than just solving issues. Your tool will last longer and continue to function properly if you clean and store it properly. You can maintain your screwdriver in optimal condition and make sure it’s prepared to take on any project by following these easy steps.

Don’t replace your screwdriver right away if it’s not functioning properly. Many common problems, such as a dead battery or a slipping chuck, can be resolved with some simple repairs and troubleshooting. We’ll walk you through identifying and resolving these common issues in this post, so you can get your reliable tool back in working order without having to pay a lot of money or hire a professional.

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