Difficulty

Moderate

Steps

8

Time Required

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Sections

1

  • Diode
  • 8 steps

Flags

2

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Introduction

What you need

Step 1

              opening the case
  • Open the iTeufel Air by prying open the speaker cover on both sides with a pry tool so that the cover detaches from the rest. It is recommended to use the plastic lifter at the points marked in red and carefully lift the cover 2-3 cm so that the adhesive strips detach from the cover.
  • If the cover doesn’t come off with a plastic pry bar, you can gently try it with a small flathead screwdriver
  • If you have loosened the cover on one side, fix the cover so that it remains open, e.g. with the plastic lifter and loosen the cover on the other side as well.
  • Before you start, unplug the iTeufel Air from the socket!

Open the iTeufel Air by prying open the speaker cover on both sides with a pry tool so that the cover detaches from the rest. It is recommended to use the plastic lifter at the points marked in red and carefully lift the cover 2-3 cm so that the adhesive strips detach from the cover.

If the cover doesn’t come off with a plastic pry bar, you can gently try it with a small flathead screwdriver

If you have loosened the cover on one side, fix the cover so that it remains open, e.g. with the plastic lifter and loosen the cover on the other side as well.

Before you start, unplug the iTeufel Air from the socket!

1024

Step 2

  • Now open the front cover by lifting it up with the plastic lifter between the black cover and the white frame. The cover is glued to the housing at the 4 points marked in red.

Now open the front cover by lifting it up with the plastic lifter between the black cover and the white frame. The cover is glued to the housing at the 4 points marked in red.

Step 3

  • Now unscrew the loudspeakers from the housing with a PH 2 screwdriver.
  • Then lever the cover with the speakers off the housing by lifting the black cover slightly at the points marked with the arrows using a plastic lifter.

Now unscrew the loudspeakers from the housing with a PH 2 screwdriver.

Then lever the cover with the speakers off the housing by lifting the black cover slightly at the points marked with the arrows using a plastic lifter.

Step 4

  • Now carefully lift off the plate with the loudspeakers and place them in front of the housing.
  • Be careful not to tear off the cables. The cables to the loudspeakers may have to be brought out from under the bass reflex tubes.

Now carefully lift off the plate with the loudspeakers and place them in front of the housing.

Be careful not to tear off the cables. The cables to the loudspeakers may have to be brought out from under the bass reflex tubes.

Step 5

  • Now the bass reflex tubes have to be removed from the housing. These are glued all around the white housing. The adhesions can be carefully cut off with a knife.
  • The best way to push the bass reflex tube out of the white housing is from the inside to the outside.

Now the bass reflex tubes have to be removed from the housing. These are glued all around the white housing. The adhesions can be carefully cut off with a knife.

The best way to push the bass reflex tube out of the white housing is from the inside to the outside.

Step 6

              Unscrew the power pack
  • Now unscrew the circuit board of the power supply with a PH 2 screwdriver.
  • Before you remove the circuit board, disconnect the circuit board connector for the power supply (black cable) and the white circuit board connector to the main circuit board.

Now unscrew the circuit board of the power supply with a PH 2 screwdriver.

Before you remove the circuit board, disconnect the circuit board connector for the power supply (black cable) and the white circuit board connector to the main circuit board.

Step 7

              Power supply repair
  • The defective diode is marked with the red circle. Replace this with a soldering iron for an identical diode (P6KE 200A) and pay attention to the polarity of the new diode when installing
  • A defective diode is not always visually recognizable. If so, the diode should be unsoldered and checked using the diode test mode of a multimeter.

The defective diode is marked with the red circle. Replace this with a soldering iron for an identical diode (P6KE 200A) and pay attention to the polarity of the new diode when installing

A defective diode is not always visually recognizable. If so, the diode should be unsoldered and checked using the diode test mode of a multimeter.

Step 8

              Another cause of error
  • If the diode is functional, other components of the 5V power supply may also be defective.
  • In the event of overvoltage damage (e.g. lightning strike), the following components can be defective: fuse (5mm grid), IC switching power supply (TNY 280 PN) and the bridge rectifier (on the back of the circuit board). These all need to be replaced.

If the diode is functional, other components of the 5V power supply may also be defective.

In the event of overvoltage damage (e.g. lightning strike), the following components can be defective: fuse (5mm grid), IC switching power supply (TNY 280 PN) and the bridge rectifier (on the back of the circuit board). These all need to be replaced.

Work the steps in reverse order to reassemble your device.

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HelloMacOS

oldturkey03

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                                      with 1 other contributor 


                    Felix

Member since: 03/19/2022

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                       2

Andreas - Nov 11, 2022

Reply

Schritt 8 - das ist kein Optokoppler auf dem 2ten Bild sondern ein Brückengleichrichter.

Optokoppler sind 3 stück unten - aber an einer anderen Position.

Gruß Andreas

Felix - Nov 11, 2022

Reply

Ja klar stimmt, habs korrigiert ;)