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TV board troubleshooting
No picture but have raster.
Measure the waveform of
R.G.B Hors, Vers at X7.
No
Check whether N1 has No Check whether X9 pin 1, pin 2 have
5V power supply. 5V power input.
Yes
Measure N1 pin 33, pin 35 No No
Replace N2 Replace N1
waveform.
Yes
Measure N1 pin 42, pin 44 No
waveform.
Yes
Check V105-V107's No
Replace V105-V17.
output waveform.
24
HLT-1751
HLT-2051-01
HLT-2051-02