Disassembly of Xiaomi electric shavers S500: Complete guide with photo and expert advice

Xiaomi electric shavers S500 It's a popular combination of affordable prices, high-quality assembly and efficient shaving, but even the most reliable technology requires maintenance: knives become dull over time, dust gets in, and the engine can start to work intermittently. Disassembling a razor is the first step for deep cleaning, blade replacement, or fault diagnosis.

Many users are afraid to disassemble the device themselves, fearing to break fragile plastic latches or break the tightness.In fact, with the right approach, the Xiaomi disassembly process S500 It's not as hard as replacing a battery in a remote, but it's important to know the mounting points of the case, the order of the dismantling and the use of the right tools. In this article, you'll find a step-by-step photo guide, a list of tools you need, and tips on how to avoid typical errors.

⚠️ Warning: Disassembly of the razor will void the manufacturer's warranty. If your device is warranty, contact the Xiaomi service center.

Preparation for disassembly: tools and security measures

Before you start disassembling, prepare the workspace and tools, and use of inappropriate screwdrivers or excessive force are the main reasons for failure of the latches of the case.

• 🔧 A set of plastic blades (or mediators) to carefully disengage the body without scratching.
• ⚙️ Cross screwdriver PH00 — Size is important: too big a screwdriver will rip the slats off.
• 🧲 Magnetic mat or container – so as not to lose small parts (screws, springs).
• 📸 Smartphone for photography - fix every stage of disassembly. This will help to properly assemble the razor back.
• 🧴 Isopropyl alcohol (70%+) Cotton swabs – for cleaning contacts and internal surfaces.

Also, make sure you have a clean, well-lit space, a white tablecloth is perfect, and it's easier to spot the details that have fallen on it, and don't take apart the razor on the carpet or soft surface, because screws and springs can get lost.

⚠️ Warning: If the razor was turned on recently, let it cool for 10-15 minutes.Heated plastic parts are more fragile and can crack when disassembled.

Xiaomi's device diagram S500: inside

To understand how to disassemble a razor, you need to know its internal structure. - Xiaomi S500 consists of the following key components:

Features of Xiaomi S500 — The blades and the engine are attached separately to the body, making it easier to replace them, but the battery is soldered to the board, so replacing it requires soldering skills.

If you want to replace your knives, remove the top grille and blade block, and you need to have a complete disassembly to repair the engine or board.

Step-by-step: how to disassemble Xiaomi S500

Follow the instructions strictly by steps. Do not skip steps - this can lead to breakage of latches or loss of parts.

Step 1: Removal of the upper grille and knife block

1. Turn off the razor and remove the battery (if it is removable). S500 The battery is built-in, so just make sure the device is turned off.

2. Take the razor by the body and turn the top grille counterclockwise.Some models have an arrow that says OPEN.

3. After clicking, raise the grille upwards. Underneath it, you'll see a knife block that's attached to two latches.

4. Pull the knife block carefully, it should come out without effort. If it's jammed, don't pull! Check if the hairs are caught.

Step 2: Separation of the hull

1. Turn over the razor and find 4 screws under the rubber legs. Tap the legs with a plastic spatula and unscrew the screws with a screwdriver. PH00.

2. Insert the plastic blade into the gap between the upper and lower part of the housing (on the side of the switch button). Carefully drive the blade around the perimeter, disconnecting the latches.

3. Once all the latches are snapped, remove the top of the case. Be careful - there may be spring contacts inside that are easy to lose.

Make sure the razor is off.|Take a picture of the initial state|Prepare a screw container|Use only plastic blades|Do not force the latches.-->

Step 3: Extract the internal components

1. Disconnect the engine plume from the board. It is attached with a small connector - carefully tuck it into the shoulder blade.

2 Unscrew the two screws that hold the engine and remove it. Notice the position of the springs, they may fall out when removed.

3 If you need to replace the battery, you have to unfurl it from the board, you need a soldering iron, soldering and experience with electronics, without soldering skills, you better go to the service.

At this point, you've accessed all the key ingredients, and for deep cleaning, use isopropyl alcohol and a soft brush.

💡

If the latches of the body do not lend themselves, heat them with a hairdryer (temperature not higher than 60).°C. Plastic will become more elastic and the risk of breaking the fasteners will decrease.

Common Mistakes in Disassembly and How to Avoid Them

Even experienced users sometimes make mistakes that lead to a razor breakage, and here are the most common ones:

• 🔨 Using metal screwdrivers to disengage the body - leaves scratches and can break latches. Always use plastic blades.
• 🔋 If you're not taking anything off, check if all the screws are unscrewed and if there are any hidden latches.
• 🧲 Loss of small parts (screws, springs, gaskets) Always work on a magnetic mat or in a container.
• 🔥 Battery overheating when soldering. Lithium-ion batteries are sensitive to high temperatures. Use a soldering iron with a power of no more than 30 watts.
• 💧 Even if you clean the razor with alcohol, let the parts dry completely before assembly.

Another common problem is the wrong build, for example, if you confuse polarity when you plug in the battery, the razor won't turn on. Always check the photos taken before the disassembly.

⚠️ Warning: If the razor does not turn on after assembly, check: Correct connection of the engine plume; battery contacts for oxidation; battery charge (it may have run out during repairs).

Cleaning and maintenance after disassembly

By disassembling the razor, you can not only replace the parts, but also conduct a deep cleaning that will extend the life of the device.

Knives and grilles cleaning

1. Wash removable knives and grille under warm running water with soap. Use a soft toothbrush to remove hairs from the grooves.

2. For disinfection, soak the parts in a solution of chlorhexidine (0.05%) for 10 minutes, then rinse with water.

3. Dry the knives and grilles in the air or with a hair dryer (cold mode).Do not rub them with a towel - this can scratch the coating.

Engine and board maintenance

1. Remove dust from the engine and boards with a soft brush or compressed air (cylinder).

2. Wipe the contacts on the board with a cotton swab dipped in isopropyl alcohol. This will remove oxidation and improve conductivity.

3.If there are traces of corrosion on the board, use a special contact cleaner (for example, Kontakt 60).

After cleaning, allow all parts to dry for at least 1 hour before assembly.

💡

Regular cleaning of knives and lubrication (1 every 3 months) increases the life of the razor by 30-50%. Use only special lubricants for electric razors!

Replacement of knives and other components

If cleaning didn't help, it may need to replace parts. - Xiaomi S500 changeover:

• ✂️ Knives and grilles — average lifespan of 12 to 18 months for daily use. Original parts can be found by the article. MDZ-22-DC.
• 🔋 Battery - if the razor holds charge for less than 10 minutes. Suitable battery: Li-ion 3.7V 600mAh rechargeable.
• 🔄 The engine is at uneven vibration or complete stop. Replacement requires soldering work.

When buying parts, pay attention to compatibility with the model. S501 not fit for S500 due to different attachment.

For the replacement knives:

1. Remove the old grille and blade block (as described above).
2. Install new knives by combining the grooves with guides on the body.
3. Secure the grille by turning it clockwise before clicking.

If you're replacing the battery, check the multimeter voltage after soldering. It should be within 3.6–4.2V.

Razor assembly after dismantling or repair

The assembly is carried out in reverse order, but there are several nuances:

1. Check the spring contacts - they should enter the slots on the board and the case.
2. Don't pull the screws. Just tighten them to the point without effort.
3. Make sure the engine plume sits tightly in the connector, and sometimes it can fall out when assembled.
4. Check the operation of the power button before the final assembly of the case.

After assembly:

1. Charge the razor for 2-3 hours.
2. Turn it on and check the vibration uniformity.
3. If the razor is not working properly, disassemble it again and check all connections.

⚠️ Warning: If the body creaks or luftites after assembly, then one of the latches is not latched. Do not use the razor in this condition - this can lead to moisture getting inside.

FAQ: Frequent questions about Xiaomi’s disassembly S500