Difficulty
Moderate
Steps
5
Time Required
10 minutes
Sections
1
- Replace Capacitors
- 5 steps
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BackPetra KM 31.17
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Introduction
What you need
Step 1
Replace Capacitors
- Remove the plastic water tank
- Remove the iron sheet and the underlaying black spillover pan
Remove the plastic water tank
Remove the iron sheet and the underlaying black spillover pan
1024
Step 2
Open
- Turn the machine upsidedown and lose the T10 screw right next to the power cord
- Lose the four clips on the side. Use a spudger or a flathead screwdriver to gently bend the little plastic clip on the outer side of the rectangular hole inwards. Use your other hand and a spudger or a plastic card to lever off the coverage. Do this with all four holes.
Turn the machine upsidedown and lose the T10 screw right next to the power cord
Lose the four clips on the side. Use a spudger or a flathead screwdriver to gently bend the little plastic clip on the outer side of the rectangular hole inwards. Use your other hand and a spudger or a plastic card to lever off the coverage. Do this with all four holes.
Step 3
Remove cords
- Disconnect all cords from the circuit board besides the two black ones on the right(marked black on the first picture); these are soldered and therefore cannot be disconnected so easily.
Disconnect all cords from the circuit board besides the two black ones on the right(marked black on the first picture); these are soldered and therefore cannot be disconnected so easily.
Step 4
Desoldering
- Desolder the big yellow 0.68 microf capacitor
- Solder in the replacement capacitor
Desolder the big yellow 0.68 microf capacitor
Solder in the replacement capacitor
Step 5
(Optional) replace the other capacitors
- Sometimes the two smaller capacitors (0.047 microf) are also damaged. Test the machine after step four, if it doesn’t properly work, replace these two as well.
Sometimes the two smaller capacitors (0.047 microf) are also damaged. Test the machine after step four, if it doesn’t properly work, replace these two as well.
To reassemble your device, follow these instructions in reverse order.
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5 other people completed this guide.
Author
with 2 other contributors
benston
Member since: 06/08/2015
220 Reputation
1 Guide authored
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Rainer Kraus - Jun 18, 2017
Reply
Die zwei kleineren Kondensatoren haben 0,047µF, nicht 0,47µF.
Ansonsten - Gute Anleitung, hab wieder eine funktionierende Kaffeemaschine.
Danke dafür!
benston - Jun 19, 2017
Du hast Recht, danke für den Hinweis
john collins - Jan 26, 2018
Reply
Smashing, Thank you. My 4yr old Petra was leaking from thé bottom and by removing thé bottom i saw thé filtre was blocked and was able to clear thé crud.
Annette - Aug 3, 2019
Reply
Hallo, ich habe sowas noch nie gemacht (Hausfrau im fortgeschrittenen Alter :-) möchte aber meine Petra retten. Lötkolben ist bestellt, die Maschine ist geöffnet aber jetzt scheitere ich daran, dass ich nicht weiß, wie ich die Kabel abmachen soll! Gibt es da eine Trick? Die sitzen ziemlich fest und ich möchte nichts kaputt machen.
Annette
Annette - Aug 16, 2019
Reply
Wooohoooo!!!
Das alte Mädchen läuft wieder - mit einem Ersatzteil für 93 Cent!
Ich (58 Jahre und noch nie vorher gelötet) habe es nach Deiner Anleitung geschafft.
Dankeschön!