20
3. Sound, but without picture
It has sound, but without picture
Check B+
Check if the
pin26 of N302
has H-frequency
Check if the
V301 is damage
Check if the digital
processing board has
RGB and H-V sync
output
Check the N700
and peripheral
circuit
Check if the digital
processing board has
RGB output
Check the digital
Check the N801 and
peripheral circuit
Without raster
Raster
Check if the H-V
circuit is normal
Check the FBT
Check the filament
voltage of CRT
board
Normal
Abnormal
No
No
Summary of Contents for IS-TVHD30
Page 1: ...COLOR TELEVISION IS TVHD30 ...
Page 10: ...8 APPX horizontal and vertical scanning adjustment diagram ...
Page 11: ...9 ...
Page 19: ...17 6 LA72700V 5 SIF input 25 R output 11 SDA 26 L output 12 SCL 31 9V ...
Page 20: ...18 Wiring diagram ...
Page 23: ...21 Schematic diagram ...
Page 24: ......
Page 25: ......
Page 32: ...603 TJ3060 01 Ver 1 0 603 TJ27780 01 603 TJ27680 01 ...