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Troubleshooting guide
No raster
Does the logo appear on the screen
when turning on the set ?
Yes
Check whether there is R.G.B
output at X601 on TV board.
No
Replace TV board.
No sound
Check N8 pin 14, 15, 22, 23, 38,
39, 46,47 (these pins should
have 12V power supply)
Yes
Check N8 pin3, pin 5's input signal.
Yes
Check whether N8 pin 4, 27, 28 are
normal. Pin 4 should be 2.43V,
pin 27 should be 1.46V and
pin 28 should be triangle wave.
No
Replace N8.
No
Check whether the adapter
supply 12V power to Digital Board.
Yes
Check U125965V.
Good
Check whether U18 pin 63
is high level.
No
Replace Digital board.
No
Check L302, X604 pin 5 and pin 6.
No
Check N6 pin 5 and
pin 8 signal.
Yes
Check N8's welding
condition.
23
No
Check whether X101 is
properly inserted.
Check whether FUSE is melted.
Replace adapter.
No
Check N5 pin 27
and pin 28 signal.
No
Check N5 pin 67 signal.
No
Check whether U1 pin 11
have output waveform.
Good
No
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