Monday, September 30, 2013

PLASMA TVs _DEFECTS & SYMPTOMS

Symptoms & Possible Reasons
F/White low discharge.
  • Low discharge caused by unstable cells occurring at full white pattern if high (60 degree) or normal temperature.
  • Panel: MgO source / dielectric thickness cell pitch/phosphor.
  • Circuit: drive waveform/ voltage condition.
Weak discharge.
  • Normal discharge but cells appear darker due to weak light emission occurring mainly at low (5 degree) Full white/Red/Green/Blue pattern or gradation pattern.
  • Panel : MgO deposition count and thickness / aging condition.
  • Circuit: drive waveform/ voltage condition.
Exhaust pipe damage.
Crack in break if exhaust pipe an image is partially lacking or the panel noise occurs depending on the damaged parts and with the passage of time.