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ELEKTRONK A..
TECHNICAL CHANGE BULLETIN TEKNK DEKLK BÜLTEN
CHANGE NO: REF NO : DATE : 31.08.2001
AFFECTED MODELS: ALL TV SETS WITH AK19 CHASSIS
START DATE : 05.09.2001 REASONS OF CHANGE: PROBLEM: Problem During stand-by of TV Set sound is coming from Speaker . Reason: In stand-by Mode the supply voltage of the Audio Amplifier is approx. 1.3V DC . This value is enough for working of the Audio Amplifier . Solution: By changing Diode D 819 from Diode Zener 11V to Diode Zener 7.5 V , the supply voltage of the Audio Amplifier decreases to a value of approx. 0.9 V DC during stand-by mode . In that case the Audio Amplifier is in off mode.
: 1 2 3 4 5 NO 1 2
PCB CODE
VESTEL CODE
30001349
COMPONENT NAME
DIODE ZENER 11V
POSITION NUMBER
D819
QUANTITY
1
PCB CODE
VESTEL CODE
30001346
IN COMPONENT NAME
DIODE ZENER 7.5V
POSITION NUMBER
D819
QUANTITY
1
CUSTOMER SUPPORT ENGINEER S.DEMIRKAYA
QUALITY MANAGER ALI TUNC CAN
Form Rev.No:00
Form No: 10.KALT.68