Hisense plasma TPW32V68 power supply repair - Home Appliances

DFN1006 TP-RCLAMP3321P ESD Diode Low Capacitance

Peer sent a Hisense 32-inch plasma to see, and said that the rotten is not complete, and I thought that if YZ board burns no matter which one burned, it would not be complete, and did not want to put it all for a few days. There is nothing wrong with it today. Take a look at it. First look at the screen LG PDP32F1, my heart is more practical, the previous two repairs are all Samsung's screen is rotten. The power supply board is in good condition, VA, VS has good ground resistance, and the two insurances on the Z board are intact. Power test machine, three no, measured 5V did not. Remove the power board check and found that there is nothing abnormal except the R1513A00SMT open circuit. Look at the specification should be a fuse resistor, directly take a 2A soldering insurance installed in the original place, measure 450V filter capacitor can also be charged, plug in the test machine, just turned on the switch will collapse. The power supply circuit of the power board is checked again. When the Q151 is removed, the tube is soft-punched, and the test is normal with the 1K file. When the 10K file is reversed, the SD level is leaked. After the replacement, the boot image appears, and the DVD picture sound can also be played, that is, the power supply screams badly. Then check C151 102 C154 10UF, C156 47UF are normal, the R158 resistance is small, indicating normal, the flip board found a diode SB140A connected in parallel with R158, the test has been broken down, because there is no such diode, Schottky 1A40V, with The previously purchased Xiaohong 6456 power supply part of the Schottky diode AK03 replaces the test machine troubleshooting, the picture sounds good.