Filter Coffee Maker Repair

The goal of this type of study is to enable the repair of a category of devices using an example in the form of photos, schematics, explanations, and links to tutorials, and thus empower future repairers.

In this dossier, we explain what the device is made of, and we show the different sub-assemblies, the roles they play, and how they function both in isolation and when assembled together.

We do not show the disassembly or reassembly of the devices because our goal is to study a category of objects. Within the same category, no two devices are alike, whether from one brand to another or even within the same brand. It is therefore impossible to say what tool to use and how to go about it. If you encounter difficulties, do not hesitate to search for a disassembly tutorial online based on the model; there are many available.

Our objective is to show that one can learn by practicing. The advantage is that it allows for "intelligent" progress by understanding "how it works". Once you have understood, you can redo it as many times as necessary and on other devices.

It is also not a matter of redoing what has already been done. We select already existing quality content and complement it if necessary to aggregate it around a "methodological" approach capable of providing solutions within the framework of an autonomous and secure repair process.

Performing a repair is like conducting an investigation. You must look for testimonies, ask questions, observe, find clues, analyze evidence, and verify alibis. Then proceed to the identification and arrest of the suspect :-)

This investigation must be conducted methodically.

It is this method that we propose you discover.

To start repairing any device, from the simplest to the most sophisticated, even before disassembling anything, we suggest asking yourself 3 questions. This is the information gathering phase.

This first phase is as important as the repair itself, insofar as if the analysis has been done correctly, the repair will be all the easier for it.

The 3 questions to ask yourself systematically are, in order:

• What are the different functions of the device?
• What is its user manual?
• What is the problem encountered?⏎

What are the functions of the device?

In the case of simple objects, it may seem useless to ask this question, but for more complex ones, it is important to understand the origin of the breakdown. This avoids as much as possible heading down false paths. ⏎

What is the user manual?

This is the logical follow-up to the first question. When you have grasped all the functions of the device, it is appropriate to understand how to use it. To do this, you can refer to the user manual if it is present, or ask the owner to explain how it works, if they know themselves, which is not always the case (!)

What is the problem?

Finally, you can ask the last question about the malfunction(s) of the device.

It is necessary to determine if the device is totally or partially broken (hence the importance of the first question), what the symptoms are, if an event led to the breakdown, and anything that can help pinpoint the origin of the problem.

During this step, it is necessary to test the object, observe what is happening (*1) and confirm with the user the nature of the problem(s), to verify what works and what does not, to avoid any misunderstanding in the rest of the operations.

After gathering this initial information, it is likely that you will be able to establish an initial Troubleshooting that will allow you to move on to the next phase, the execution of the repair.⏎

This phase consists of:

• disassembling the device (*2)
• examining, observing, measuring, and analyzing the behavior of the different elements that constitute it
• documenting if necessary (thanks to the internet)
• identifying the defective element(s), if any
• proceeding with their replacement
• making adjustments
• reassembly

At the end of this phase, it will be appropriate to perform tests on the device to verify the device's functionality.

In the workshop, this must be done with the user and confirmed with them the success (or lack thereof) of the operation.

(*1) Repair is an observation exercise that calls upon (almost all) of our senses.

- sight to visualize what is happening

- hearing to listen for any noises produced by the device

- smell to identify, for example, smells of burning

- touch to feel vibrations, heat, cold, etc.

To succeed in a repair, it is recommended to be in a quiet place, to have sufficient space with good lighting.

(*2) IMPORTANT Since disassembling devices, especially the most recent ones, is often a long and delicate operation, you should ensure you have the necessary time and tools. You must be aware that this can damage the appearance of the device, or even render it unusable in the worst case. It is recommended to search the internet for disassembly advice by searching based on the model and brand of the device.

Repairing electrical or electronic devices almost systematically requires opening these devices, which leads to taking certain precautions so as not to risk electrocution or other dangers (burns, explosions, fire ...).

It is therefore essential to master the basics of electricity and to know and apply the safety rules in this area when opening such a device.⏎
If this is not the case, do not do anything yourself.

If you are not sure of yourself, just perform the checks without power.

If you take a measurement while live, make sure to prepare the measurement without power by connecting the multimeter, for example, with test clips. This allows you to perform the check without having to handle potentially dangerous instruments.