5
Sony Model KZ-32TS1U // KZ-41TS1U TV Diagnostic Guide
Chapter 4 - Plasma Panel Picture Defects
Board Location – Ref. Figure 4-1
V
H
Vertical or
Horizontal
black / white
line through
the picture.
a)
Colored rain
in a black
background.
b)
White Noise
replaces 1/4
of the picture
c)
Normal Pix
Normal Pix
Black lower
half
Black upper
half
White noise
Black top, bottom
just white noise
d)
e)
f)
g)
g) A Dark Screen with sound can be caused by the plasma
panel or the TV circuitry. Measure the DC voltages and signal
entering the plasma panel to determine which is defective.
Power Supply Board
CN 23
1
CN 1
13, 15
gray wires
1
Dark screen?
Check DC and signal video levels at CN23 & CN 1.
Normal Voltages with TV ON, any input
CN23/pin 1 = 55Vdc
CN23/pin 3 = 5Vdc
CN23/pin 8-10 = 78Vdc (32") or 82Vdc (42")
CN1/pins 13 & 15 (gray wires) = 1Vp-p @ 30MHz
If these input voltages/signals are OK, the plasma
panel is suspect. CN1 is on the plasma panel below
the Power Supply board.
