No power on (LCD27TV006HD)
Does the standby light continue to blink? IF so, count the number of blinks and go to:
Continuous Blink Once A Second, No Pausing As Discussed Above---
No reply from the jungle IC301 (data bus is busy, shorted to ground or held high),
IK video path is defective.
ONE Blink--- not used for the self-diagnosis
TWO Blinks---B+ over current protection (OCP) , unit goes to the standby
mode then displays the 2 blink fault. Could be a short in the power supply
of any of the circuits.
THREE Blinks---B+ over voltage protection (OVP), unit goes to the standby
mode then displays the 3 blink fault. This is also a problem in the power
supply circuit, check T603 and R672.
FOUR Blinks---No Vert. Deflection (V STOP), Screen goes to a single
horizontal line then the video signal muted. Check IC1509, Q1505
FIVE Blinks---AKB circuit (AKB), the timer/standby indicator blinks for
about 30 seconds then goes to the self-diagnosis function. Something is
wrong with the video. Check video out, Q705, 732, 761 and other components
on the C board, also check Q218, 219, 220 on the A board. Also unit be in
blanking, try turning up screen slightly.
SIX Blinks---No Horizontal (H STOP), no raster, goes to the blinking
self-diagnosis function immediately. Check C515 & 516 and the jungle IC,
SEVEN Blinks---High voltage shutdown. The high voltage has exceeded 33k and
the unit goes immediately into safety shutdown. Check power supply
regulation and horizontal circuits.
EIGHT Blinks---Problem with the audio (AUDIO), unit goes to standby and
blinks the self-diagnosis code. Check IC406 audio amp, PS401 and 402.
That may help you decide what is going on.
In the long run you will probably need to have a tech take a look
at it. The problem you describe is usually a serious matter that needs
repair by a trained technician..
Don't forget to rate me as fixya...
Feb 03, 2008 |
Flat Panel Televisions