Panasonic TNPA3215AB Plasma TV SC Board

Panasonic TNPA3215AB is a Y‑sustain (Y‑main) board that routes the vertical video and control signals from the logic board to the plasma panel in models such as TH‑50PHD7UY and FUJITSU P50XHA40US. Common failure modes include power supply rail degradation, burnt or failing MOSFETs/diodes on the Y‑axis drive circuitry, and connector corrosion that disrupts signal integrity. First‑check diagnostics: verify VCC and GND rails to spec with a multimeter, visually inspect for burn marks or swollen capacitors on the board, and use an oscilloscope to confirm proper Y‑signal output before proceeding to component replacement.[oss-gpt-20b]

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