Repairing the printed circuit of a microwave.
Greetings, my dear steemians.
In today's post we have to repair the electronic circuit of a microwave. The client tells me that this device has been in use for about 8 years and bought it when his daughter was born.
The description of the fault is: 1) The command lights are flashing.
2) The options are not marked.
1) The command lights are flashing.
2) The options are not marked.
My years of experience in the industry tell me that we have a printed circuit failure, it is likely that some electronic component is damaged or has a false contact.
First I want to start by showing you what the electronic circuit is.
The electronic part of a microwave is the one that allows to coordinate and exert all the functions and commands contained in the product.
Printed circuit or electronic circuit:
This piece is the one that exerts the central function of the microwave, it allows us to control the operation of the device according to our needs.Some circuits are more complex than others, this is due to technological advances and updates, to which they add some extra functions (for example the grill function).
The panel has a series of conductive tracks of electrical energy, which communicates directly with each of the elements integrated and this is how the system exercises the function requested when we press the options.
Now let's get down to the repair process.
As a first step we observe the circuit and it can be seen that some tin welds are somewhat deteriorated, due to insects entering the products.
This deterioration prevents electronic communication between parts, which is why the circuit is not working properly.
The second step is to clean the circuit and replace the defective welds. We do this with the help of an electric welder and tin.
When all the replacement procedure is done, we can test the circuit and effectively start using our equipment again.
A fairly simple repair process, the microwave is in perfect working order.
- Avoid cleaning the area where the control panel is located with water, because liquid can enter the circuit.
- It is important to keep the microwave areas clean and prevent unwanted insects from entering the microwave.
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