Erbauer ERT 576 SDS - Does not work - where to look for the cause

Hello colleagues
I have such a rotary hammer, rechargeable battery -Erbauer ERT 576 SDS, nicely zakręciła ok 2 lat jak jak kupiłem / ze expozycja /

Suddenly she stopped, something smoked and the end of the song.
I undressed, dusted. You can see a burnt ceramic capacitor on the output of the switch, you can not read the value. Rather, it is not the reason that it does not work.
I believe that this capacitor collects arcs from the commutator - and maybe I'm wrong?

Please, direct - how and where to look for the cause of the failure. I have repaired many different technical devices successfully, but this model is the first time I have to heal. Maybe some scheme?

greetings
Jolek

Take this condenser out and see, I think he did the job and damaged the

You have not been before with this drill on the site, because quite recently a colleague watched such a hammer, but then the switch was completely burned. Burned hole in the laminate and on the additional board also shot transistor.
These breakers are not too strong.

@BezAgresji - you wrote earlier that you scroll commutator motors - and this is what it is - so you can know what size order is this capacitor? He is soldered right at the output of the switch, parallel to the outputs.

@ TomekB123 - do you mean the service in Szczecin?
I have not been anywhere yet, but as I can not myself, I will give to the

And who here is servicing this brand in Szczecin?

I took the hammer from the service - not repaired. Completely spare parts - apparently even in England where this brand is present on the market. That's how the head of the power tool repair facility informed me.
I paid 40 zlotys for the diagnosis. Another lesson how you can count - count on yourself.

So I took out the electronics assembly from the drill, I watched.
You see immediately destroyed two power systems, rather power transistors than thyristors or triacs.
Although ...
I attach photos of damaged elements from the front, in the back where there was a small radiator and a plate from the bottom.
There are no markings on these power elements. Is it pnp or npn - how to guess?
Please, maybe somebody has already done it and will tell you what the elements are.
Over time, we will dismiss this and will be useful to many users.

I wonder how it is solved in battery-powered hammer drills of other brands, better known in Poland - Makita, DeWalt, Bosch.
After all, the control may be similar and more knowledge is about these brands.
Maybe someone has an electronics diagram of the above-mentioned hammers - I am asking for submitting or indicating a place where you can see.

I will do some tests - maybe something will come out. I've already fixed a lot of equipment in my life, lots of fun, it's worth trying.

I glued three photos, they are visible in the post above.

Hello
Have you been able to repair the equipment? I am looking for the same engine model. Maybe you have for sale your inaccurate? Or you want to sell the whole?

Because I have to finish the topic, I inform how it came to me.

Well, I diagnosed what these transistors are supposed to be - in this case it's a MOSFET.
I bought it but I did not go to the repair because I got the offer to buy it in full so I sold it.
But I think if I could fix it it would work.