Question about Akai LCT2662 Television

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AKAI CT 2112

Dear Reader

I am Technician last five years,
I face one porblem of AKAI CT 2112, That television changes chainal while sound is lost, after brightness is down sound is increasing and brightnes is us sound growth.
how can i solu this problem. ? tell me solution , what is process of solu this problem .

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This is a typical power supply problem. Please check the B+ Power Supply that goes to the LOT (FBT). It should be 110V. If that is ok, check the voltage while increasing and decreasing brightness, sound. If there is variation, the problem is in the SMPS. Look for dry capacitors, open/high value resistors, zener diodes, transistors etc. If nothing works, please download a data-sheet of the IC and check voltages at the pins and locate the adjacent components. Even a dry capacitor in the power supply can decrease the votage at load

Posted on Jan 25, 2011

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Posted on Jan 02, 2017

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