Here is a list of the problems that might have occurred indicated by
the number of blinks. The words in parentheses are those, which you
will see for each of these faults on a diagnosis screen described later
in this article.
- Unit is dead, No blinks - Problem in the standby power section. Might check fuse, R607, Q601, IC601, R612 and VDR601 (should show open).
- Continuous blink once a second, no pausing - 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 vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505
- Five blinks - AKB circuit (automatic kine
bias), 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. In addition, unit could be in
IK 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, IC206.
- 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. On some projection models of Sony TV sets,
this code means that T8005 (flyback transformer), or the associative
components in the high voltage circuits are defective on the D board.
- Nine blinks - Replace D 6116 and D 6301 on the
"G" board, do not resolder as this will fix the problem temporary. Or
Panel Module Error or Thermal Error. If it is intermittent 9 blinks,
meaning sometimes the TV comes on and other times you get flashing,
then change the switching regulator on the "G" board or check
connections. Make sure the regulator is -12 or -13 (negitive).
- Ten blinks - Check Q8014 and Q8013 for shorts,
leakage, or bad solder connections on the " D" board. If the
transistors are bad, check R8051 and IC8005, also on the "D" board.
Intermittent problems? This is a great feature. You can also bring up
these fault codes on-screen to see a list of the problem numbers with
the abbreviation of the problem and the number of times this problem
has occurred. This is slightly different than entering the service
mode. To see the diagnostic screen, press the following buttons:
Display, Channel, 5, volume Minus, ( not plus ) then Power. This brings
up a screen with a list of the problems and number of times they have
occurred. Each of the problems named, are abbreviated as, "OCP", "OVP",
"V STOP", ETC. We have repeated them in parentheses in the text for the
"Blinks" described above so you can correlate between the diagnostic
screen and the blink codes.
Now that you know about these self-diagnostics, how do you use them?
Say that you have a set with a black screen. You see that the LED is
blinking four times. This would tell you that you have no vertical
sweep, which is why the video is muted. If it was blinking 6 times, you
would know that you have a horizontal fault. It's not a sure cure..
IMPORTANT: After you repair the unit, you
MUST clear the
values on this diagnostic screen. These codes do not reset themselves
after the fault is corrected, so if you don't clear them, you'll be
seeing "old" fault codes the next time you enter this screen. Clearing
is done by going into the service mode (display, channel, 5, volume
plus, then power ). Press 8 and Enter,
Hope this may help;
Regards,
VOTIT
Comments:
Sep 01, 2008
- Your horizontal output transistor (HOT) is busted already,you better replaced
it with identical rating,so it will works better again,if you have a
knowledge of electronics,you can do it yourself.If not find a TV
repairman to do the repair for you or bring it to a TV repair shop,
maybe they cost you $100 to $150..
Hope this may help you.
Regards,
VOTIT
Sep 02, 2008
- The red light on the front blinks about 6 times then it stops but still nothing comes on i could hear the relay clicks two times
Six blinks - No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 & 516 and the jungle IC, IC206.
Regards,