Metabo Bohrmaschine Elektronik reparieren

Introduzione

Bei der Metabo Bohrmaschine (SB E 800/2 S-R+L Impuls) kann es vorkommen, dass die Drehzahl und Leistung nur noch sehr gering sind. Hier ist die Leistungselektronik verantwortlich, die leicht repariert werden kann.

Cosa ti serve

Passo 1 Metabo Bohrmaschine Elektronik reparieren

Metabo Bohrmaschine Elektronik reparieren, Metabo Bohrmaschine Elektronik reparieren: passo 1, immagine 1 di 2

Metabo Bohrmaschine Elektronik reparieren, Metabo Bohrmaschine Elektronik reparieren: passo 1, immagine 2 di 2

Entferne die Vergussmasse vorsichtig, benutze dazu ein kleines Skalpell oder einen kleinen scharfen Schraubendreher.
Prüfe das Einstellpoti auf korrekten Widerstandswert (z.B. 100 kOhm). Wenn dieser sich durch Alterung stark verändert hat (z. B. über 250 kOhm), dann ersetze es durch einen neues oder einen Festwiderstand (probieren). Elkos sind meist noch in Ordnung.
Vergieße anschließend wieder mit klarem Epoxidharz.

Traduci

Conclusione

Arbeite die Schritte in umgekehrter Reihenfolge ab, um dein Gerät wieder zusammenzubauen.

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Moxel

Membro da: 02/01/16

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4 Commenti

hello. how to remove that stupid plastic

ilija.buric - 9 nov 2018 Replica

Which plastic do you mean ? if the electronic coverd with a plastic box ? I not sure but i think i have taken a knife. Its a long time ago since i reapar it.

Moxel - 10 nov 2018 Replica

Hat jemand eine Lösung gefunden, die Plastikgussmasse zu entfernen ?

Markus Voegtlin - 28 lug 2019 Replica

Carefully and slowly push a sharp, small screwdriver (or a small knife) into the plastic and remove the first mm in the depth; start away from the electrical components, that you see. Remove milimeter by milimeter into the deep. There is nothing underneeth, that you can destroy (like a printed circuit - it’s all on the other side). Anyway, be careful - no brute force.

When you see some light color, you are at the printed board; from here it’s easy to remove more.

Just get the Poti free from the plastic and exchange it (100k)

Adjust the new Poti to the rpm that the driller had before.

Since I damaged the Elko next to the Poti, I took all the values (in case you want to exchange them):

1x 1µF (upper right - could not read voltage - its probably a 25V due to the size)

1x 4,7µF (next to the Poti - since I could not read the value, I put a 50V to be on the save side)

1x 10µF / 25V (lower left)

1x 22µF / 25V (up in the middle)

1x 33µF / 35V (upper left)

and the 100k Poti (contact size 1 x 7mm / 0,04"" x 0,28"" (B x L) )

Roman Berger - 29 set 2021 Replica