How to detect and change the defective capacitor. · 2014. 6. 21. · Remove the defective...

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esba elektronik Gstangen 8 72336 Balingen email: [email protected] Tel. 07433 – 38 46 34 Internet: http://www.esba-elektronik.de Fax: 07433 – 38 46 44 How to detect and change the defective capacitor. Open the control unit. Unscrew only the marked screws as shown below. Do not remove the other screws. See the capacitor. If the top is arched as shown in the picture, the capaci- tor is defective. Left side: Top flat, capacitor is good Right side: Top arched, capacitor not good If the capacitor is not good, remove the PC-Board To remove the PC-board, disconnect all the cables from the PC-board. To disconnect the cable to the buzzer, short the buzzer with the finger as shown in the picture to prevent high voltages, generated by the buzzer, when bended. Open only the screws marked with red seal. Remove the defective capacitor and replace it by a new one (1000 μF / 16 Volts). Mount the PC-board back in the housing, mount all connectors. To con- nect the buzzer, short it with your finger when inserting the connector. 8.5.2013 Eugen Schöller esba elektronik

Transcript of How to detect and change the defective capacitor. · 2014. 6. 21. · Remove the defective...

  • esba elektronik Gstangen 8 72336 Balingen email: [email protected] Tel. 07433 – 38 46 34 Internet: http://www.esba-elektronik.de Fax: 07433 – 38 46 44

    How to detect and change the defective capacitor.

    Open the control unit. Unscrew only the marked screws as shown below. Do not remove the other screws.

    See the capacitor. If the top is arched as shown in the picture, the capaci-tor is defective.

    Left side: Top flat, capacitor is good Right side: Top arched, capacitor not good

    If the capacitor is not good, remove the PC-Board

    To remove the PC-board, disconnect all the cables from the PC-board. To disconnect the cable to the buzzer, short the buzzer with the finger as shown in the picture to prevent high voltages, generated by the buzzer, when bended. Open only the screws marked with red seal. Remove the defective capacitor and replace it by a new one (1000 µF / 16 Volts). Mount the PC-board back in the housing, mount all connectors. To con-nect the buzzer, short it with your finger when inserting the connector. 8.5.2013 Eugen Schöller esba elektronik


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