Brand AVX TPSE226M035R0125 Low impedance tantalum capacitor AVX 22
Electronic scale crystal oscillator 3.2*2.5mm 3225 16M (16.000MHZ) 12PF 10PPM 20PPM 30PPM
MOS power IC full range
Photocoupler
Fault model: Changhong plasma TV PT5016
Symptom: The standby indicator is on, no startup process: The machine is Samsung S50HW-XD03 screen, power board model: LJ44-00057A. The VS voltage is abnormal when the power is turned on, the output is very low, only 3V, there are 2 relays on the power board, 3 green indicators and a red indicator light. When the power is turned on, the 3 green indicators are lit successively, after 2 seconds. After the two green indicators are off, the red indicator lights up.
Remove the power board, connect the VS port to the 100W/220V bulb, forcibly work, the filament is reddish, the voltage rises to 135V after more than three minutes, and the bulb is bright. After using a hot air gun to heat a control panel of the power management, the VA voltage rises to the normal value of 190V, then the power supply small board is removed, and the power management chip IR2117 is replaced, and the fault phenomenon remains unchanged.
The maintenance was in trouble, and it was impossible to buy the power supply board LJ44-00057A online. After the replacement, the TV returned to normal.
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