How to repair a Siemens tumble dryer board: personal repair experience

Hello everyone! Today I will tell you how I managed to revive the board of the Siemens VT 46E3R tumble dryer. If your equipment refuses to turn on, does not light up, does not display anything, and, most importantly, does not respond to the power button, perhaps my steps will be useful to you.

By the way, if suddenly there is no time or desire for independent repair, order dryer repair in Mississauga from the specialists of A-Repair. They know exactly how to get your equipment back into operation.

What happened?
After a quick inspection of the board, it became clear: the resistor broke down. This is a fairly common problem with Siemens and Bosch models. The PWM controller also immediately came under suspicion. Its legs were shorting out with each other, which also did not add optimism.

Preparing for repair
First, I replaced the failed parts:

New resistor.
New PWM controller.
I had to clean the board before. Since it is double-sided, the process was not the easiest, but I managed it with a toothpick and flux. It is not scary to leave the flux - it does not require washing.

Installing new parts
Soldered out the old components. Used a soldering iron to carefully remove the resistor and controller.
Installed new parts. Apply flux to both sides of the board, aligned the pins of the microcircuit and put it in place. I soldered everything carefully so that the contacts were reliable.
Cleaned the board. After soldering, I washed it with alcohol to remove the flux residue.
Result
After assembly, I handed the board back to the owner of the dryer. The best way to verify the success is to test the equipment, so I asked him to record a short video with the machine running.

If you have a similar problem, pay attention to the resistor and PWM controller - they most often fail. And if you are not confident in your abilities, it is better to entrust the repair to specialists. Read the article " Dryer Repair Mississauga " on our website to learn more useful information about repairing household appliances!

I hope this experience will be useful. Until next time and successful repairs!

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