Hisense ISDB-T - TV Power On Troubleshooting

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5.3 TV won’t Power On
TV won’t power on
Is LED
light?
NO
YES
Measure Power 12V
Output OK or NO
NO
OK
Check Power
Cord
Only
one works
Replace Main
BD
Try Power on by
RC and Button
Neither
works
Both
Work
Power on
OK
YES
NO
Replace Power BD
YES
NO
RED
No light/blue
Panel Bright
NO
Replace Main BD
NO
YES
Check signal
Source
YES
NO
YES
Replace Panel
(to contact Hisense-tech support.)
OK
Replace power
board
Replace
Power Cord
Check/replace IR
BD or Keypad
PCA