Xiahua color TV TS2581 high voltage package fire repair example - appliance repair - Huaqiang electronic network

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A Xihua color TV model TS2581 experienced a high-voltage package shell explosion, followed by three no-power issues. Upon inspection, the tube was found to be broken down, and the correction tube was short-circuited. No other problems were detected. Since there was no original replacement available, a universal high-voltage package model A25 was used instead. The damaged correction tube was replaced, and after connecting the power supply with a 25V single power source, the machine displayed a grating but no characters. It was suspected that the pulse circuit might have been damaged due to the sparking during the incident. Further checks revealed a blown voltage regulator tube in the AFC circuit. After replacing it, the character display returned to normal, and no sound issues were observed. The sound amplifier’s power supply functioned correctly. The amplifier block was also replaced, and after testing, the image showed some magnification. By entering the bus mode and adjusting settings, everything eventually returned to normal operation. To enter the bus mode on this TV: First press the "Screen Display" button, then quickly press the "Mute" button three times. Use the "Back" button to navigate through pages, and press "Menu" to exit the menu.