No Video - Samsung PN15VT / VO Service Manual

5-1-16 No Video

Check signal cable and connection.
IC101 Pin 5, 6 and 7 inputs
14
are right?
Yes
IC101 Pin 18, 19 and 20
15
outputs are right?
Yes
IC103 Pin 1, 2 and 3 outputs
16
are right?
Yes
Cathode DC levels are right?
Yes
G2 voltage is right?
Yes
Change CRT.
Done.
PN15VT/VO
PN15HT/HO
No
Check the signal cable connection.
No
Check I 2 C bus and +12V line.
No
Check +12V, +72V line.
Check and replace IC103.
No
Check +72V line.
Check and replace IC102.
No
Check G2 wire, CRT Socket board
and FBT.
5 Troubleshooting
WAVEFORMS
14 1.00 V (IC101 #5, 6, 7)
15 0.5 V (IC101 #18,19,20)
20.0 V (IC103, #1, 2, 3)
16
5-9