Service-Info 11AK19E-3 - Troubleshooting Chuckling Noise

Oct 12, 2026

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This technical service bulletin provides specific repair instructions for Schneider AG DUAL televisions using the 11AK19E-3 Mono and Stereo chassis, addressing a reported chuckling noise audible in standby mode. The document details necessary component modifications, including replacing the thyristor (Q810), substituting the chip capacitor (C806) with a 33nF/100V foil capacitor, upgrading the fuse resistor (R867) to 1/2W, and installing an additional 1K resistor and 1N4007 diode circuit. Comprehensive spare part numbers are provided to assist technicians in executing these repairs, ensuring device stability and performance consistency across all identified affected units. This directive is essential for authorized maintenance personnel managing these specific hardware iterations, offering precise technical guidance to rectify power supply unit faults effectively.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages2

Reading Time5 min

AccessFree to download

Service Bulletin - 11AK19E-3 Mono

Required Modifications

Spare Part Numbers

Service Bulletin - 11AK19E-3 Stereo

Required Modifications

Spare Part Numbers

FAQs

What is the primary concern addressed in this service bulletin?

The document addresses a chuckling noise that is audible through the loudspeaker while the television is in standby mode.

Which specific component modifications are required for the Mono chassis?

The modifications include replacing thyristor Q810, replacing chip capacitor C806 with a 33nF/100V foil capacitor, upgrading resistor R867 to a 0.33ohm/1/2W version, and adding a 1Kohm resistor and 1N4007 diode between J243 and R802.

What is the spare part number for the diode used in the modification?

The spare part number for the 1N4007 diode is 0031811.

Oct 12, 2026

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