Troubleshooting - Acer VG270 Lifecycle Extension Manual

5.1 No Display or display is unstable on analog or digital port:
No picture or picture unstable on analog port and digital port
Power off
No
Does cable plugs in
Connector?
Yes
Does power stable?
Yes
Is Power LED light Green or Amber?
Yes
Is Power LED status normal?
Yes
Does crystal work correctly?
Yes
Is Interface BD normal?
Yes
Is LVDS cable connect OK?
Yes
Replace Panel

5. Troubleshooting

Yes Turn on power
No Plug the cable then turn on power
again.
No Check Power Board DC-DC circuit and regulator
No Check Key BD and Key BD cable
No Replace IF BD
No Check crystal CKT or replace it ( Y1 )
No Replace interface BD
No Plug LVDS cable again or replace it
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