How To Access Service Mode On A Sony Kv-34xbr800

Many of the later on model Sony Goggle box's take a built in self-diagnosis function. If the timer/standby indicator is blinking, this could be an indication of a problem with the unit. The diagnostic blinking will occur automatically with no action required by you lot to appoint it.

The timing of the blinking you encounter would be as follows: two to nine blinks, (depending on the mistake), about a tertiary of a second apart, then a intermission for 3 seconds, then the two to nine blinks nearly a 3rd of a 2d autonomously again.

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 decorated, shorted to footing, or held high), IK video path is defective.
• One blink - not used for the cocky-diagnosis
• Two blinks - B+ over current protection (OCP), unit goes to the standby mode then displays the 2 glimmer fault. Could be a short in the power supply of whatever of the circuits.
• Iii blinks - B+ over voltage protection (OVP), unit goes to the standby mode and so displays the three blink mistake. This is also a problem in the power supply circuit, cheque T603 and R672.
• 4 blinks - No vertical Deflection (5 STOP), Screen goes to a single horizontal line so the video signal muted. Bank check IC1509, Q1505
• V blinks - AKB circuit (automated 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, likewise cheque Q218, 219, 220 on the A board. In improver, unit could be in IK blanking, try turning upward screen slightly.
• Six blinks - No Horizontal (H Stop), no raster, goes to the blinking self-diagnosis part immediately. Cheque C515 & 516 and the jungle IC, IC206.
• 7 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 sound (Audio), unit goes to standby and blinks the self-diagnosis code. Cheque IC406 sound amp, PS401, and 402. On some projection models of Sony Television set sets, this lawmaking means that T8005 (flyback transformer), or the associative components in the loftier voltage circuits are lacking on the D board.

• Nine blinks - Replace D 6116 and D 6301 on the "G" lath, do not resolder every bit this will prepare the problem temporary. Or Panel Module Fault or Thermal Error. If information technology is intermittent 9 blinks, meaning sometimes the TV comes on and other times you get flashing, then alter the switching regulator on the "Thou" board or cheque connections. Make sure the regulator is -12 or -13 (negitive).

• 10 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 groovy feature. You can also bring up these fault codes on-screen to run into a listing of the problem numbers with the abridgement of the trouble and the number of times this problem has occurred. This is slightly different than entering the service mode. To come across the diagnostic screen, press the following buttons: Display, Channel, 5, book Minus, ( non plus ) and then Ability. This brings up a screen with a list of the bug and number of times they accept occurred. Each of the problems named, are abbreviated equally, "OCP", "OVP", "V STOP", ETC. We accept repeated them in parentheses in the text for the "Blinks" described above so y'all can correlate betwixt the diagnostic screen and the blink codes.

Now that you lot know almost these self-diagnostics, how do you lot utilize them? Say that you have a set with a black screen. Y'all 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 half-dozen times, you would know that yous take a horizontal fault. It'due south not a sure cure..

IMPORTANT: Later you repair the unit, you MUST clear the values on this diagnostic screen. These codes do not reset themselves after the fault is corrected, and so if you don't clear them, yous'll exist seeing "quondam" fault codes the side by side time you lot enter this screen. Clearing is washed by going into the service mode (display, channel, v, volume plus, then power ). Press 8 and Enter, which returns everything to the mill preset status.

How To Access Service Mode On A Sony Kv-34xbr800,

Source: https://techlore.com/article/understanding-sony-television-blinking-codes

Posted by: stewartarow1957.blogspot.com

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