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§ Troubleshooting
Vertical line on raster
Does drive pulse appear
B
sat pin 21 of e401?
No
Check the horizontal drive
circuits. (IC401)
Ne
Check the push-pull circuits.
{0407 and 0408)
Replace 0415 or check its
related circuits.
(D402 and T401)
Does drive pulse appear
EX
at emitter of 0402?
Does drive output pulse
appear at drain
of 0415?
Check flyback pulse at
Hi collector of 0416 and its
related circuits.
Samsung Electronics SyncMaster 17GLi
WAVE FORMS
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