Sylvania 6842THG, Service Manual

Page: 110 / 123

2-3-15 PZ3PDMOP
Defect: Sustain (horizontal stripe) Short Defect: Dielectric material layer damage
– Symptom: Combined or adjacent lines are short in
sustain direction. The line appear brighter than
other at Ramp gradation pattern or low gradation
patter
– Cause:
1) Manufacturing: Panel electrode short/ Foreign
material.
2) Parts: Board/ connector/ pin error
3) Operation: connector/ assembling error
– Symptom: Burn caused by the damage of address
bus dielectric layer appears in the panel discharge/
non discharge area. sustain also open/short occurs
by the damage of address sustain printout
<Add Block and Line Open>
<Add and Sustain Open>
– Cause: layer uneven/ abnormal voltage/ foreign
material repair failed