Sony lcd projection tv in self diagnosis mode. 4 red flashes
I have a sony lcd projection tv product code kdfe42a12 and it has been stood unplugged for 2 months. when switching it back on the tv wont start but goes into self diagnosis mode flashing red 4 times in around 2 seconds. what does this mean, and how can i fix it?
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Eight time blinks to sony TVs indicates 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
Sony TV LED & Blinking Codes - What Does It Mean When Standby/Timer Light Flashes Sony has provided a "self-diagnosis function"
with your TV, that in the case of abnormalities or problems the LED or
red blinking light on the Timer/Standby indicator flashes a number of
times to indicate the issue. when there is trouble with your
Sony Television set -- it indicates the issue in either the diagnostic
mode, or even more commonly by flashing a series of LED blinks or
flashes on the front of your television. Each set or frequency of the
blinks indicates a very specific problem with the television itself. Sorry but unless you may be able to repair the television set yourself , please call a local repair shop
to the have a repairman sent out,, Take care and please Remember to rate/vote for us to continue for Helping out the Community :)
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
Anything less than 5 blinks is major trouble. More likely vertical IC and circuit failure. Picture has been muted or turned off by TV. If Stand By light was blinking 5 times the Stand By might have came out self-diagnosis function or mode. Contact Sony Service Tech for service adjustment to fix problem.
if your TV is a mitsubishi thats the code for short protect which is most often related to the convergence Ics having shorted especiallif its a WS55809. Post your model number and I can assist you with determining whats wrong.
How many times is the red light flashing? The number of times the red led blinks means---
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.
No blinks(Unit is dead) - Problem in the standby power section. Might check fuse, R607, Q601, IC601, R612 and VDR601 (should show open).
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1. Self-diagnosis error 4-4, check for open F9A06 part # 283P128050 on the Power PCB. 2. Self-diagnosis error 4-4, check for proper seating of the DVI cable between the FMT PCB and the DMD (Light Engine). It may be necessary to disconnect and reconnect this cable to insure proper connection. 3. Self-diagnosis error 4-4, if F9A06 is good and the connection on the DVI cable between the FMT PCB and DMD are secure, suspect the Light Engine part # 939P977020 4. Self-diagnosis error 4-4, check F9A07 part # 283P128050 on the Power PCB, if open suspect the Light Engine part # 939P977020 5. Self-diagnosis error 4-1, suspect the Power PCB part # 930B929001