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Sony AKB error picture wont come on. is there any way to override this diagnostic

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KDS-R60XBR1 AKB circuit fault


AKB is auto kine bias---means a problem related to one of the three picture tubes or the boards connected to each---if it showed in error buffer with a number to the right that is the number of times the error has been detected.

Aug 29, 2012 | Sony KDS-R60XBR1 60" Projection HDTV

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Turn tv on,picture good for 4 seconds,then green curved line like a rainbow all green,then 4 green sequence flashes,picture goes out theN volume continues for 2 seconds then out front red power light then...


This is a set with bad picture tubes-not available except on rebuild basis.

Are you seeing bright green screen and then set shuts off?

Let me know so I can help--8 blinks is AKB error.

SD TECH

Sep 15, 2010 | Sony KP-51HW40 51" Rear Projection...

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2002 Sony KP53s75 is it worth repair?


Ok, 5 times is an akb problem, and without red, this tells me one of three things are most likley wrong either the red tube is too weak to produce return current to the akb circuit, or you have a bad driver on the crt board or you have a defective focus block. There are several diagnostics that need to be done to determine which one is the cause, if you are un familure with electronic repair it could be a little hazardus to do, so i don;t recommend it unless you are aware of the issues. If you swap the neck modules with the blue tube, and the set looses blue then it is not the tube. and might be worth repairing. but again if you don't have experience it may not be a good idea for you to try this yourself.

Sep 01, 2009 | Sony KP-53XBR45 53" Rear Projection...

1 Answer

Sony KV36FS120 9 blinks, picture will not come on set


does the screen light up at all if not rejuvenate picture tube

Mar 29, 2009 | Sony KDS-R60XBR1 60" Projection HDTV

1 Answer

SONY REAR PROJECTOR TV


5 blinks means AKB detected. Try turning down all 3 screen adjustments slightly.

May 27, 2008 | Sony KP-53XBR200 53" Rear Projection...

1 Answer

Sony KP-51WS520 Stand by flashes 5 times


When a Sony TV flashes five times, that means that there is an AKB circuit fault.
This means that there is something wrong with the video.
When you get this error, several IC and components concerning the video signal must be tested and eventually replaced.

Mar 13, 2008 | Sony KP-51WS520 51" Rear Projection...

1 Answer

Sony KP-57HW40


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 IK blanking,
try turning up screen slightly.

Feb 19, 2008 | Sony KP-57HW40 57" Rear Projection...

1 Answer

Sony 52" rear projection tc


5 blinks means problem in the AKB (video) and 4 blinks means problem with the verticle deflection. Try this to get the screen to display any recent faults then get back to me and let me know what it said. Press the following buttons on the remote.
Display, Channel, 5, Vol 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 problem names is 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.

Jan 13, 2008 | Sony KP-41T65 41" Rear Projection...

1 Answer

Great Sound...no picture


v1 is your verticl scan has stoped for a reason,akb 1 is the feed back from the crt to the video ic, hv 1 is high voltage stop the set ,clear the error codes and start again record them and conpare the results for the true fault.

Sep 12, 2007 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Picture cuts out


If still under warranty or if you have no electronic repair experience you should take the set back to the shop or to a repair person. Some of the solutions described below can be dangerous, TV's are very hazardous to service. Even when plugged out, TV's can store very high voltages. The five blinks(count them again just to be sure) is an error codes that stands for the following: "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 IK blanking, try turning up screen slightly." So what is the AKB? It is Auto Kine Bias; a circuit that holds the video OFF until the picture tube (kinescope) is warm enough to run video. So, if there is trouble within the AKB it may not be turning on the crt. Or, the crt could be cold, or there could be power supply problems (which I favor because the audio is gone, too, which means it is not a "video only" matter). Therefore, I do not favor replacing the C board (or A board as indicated in the url above). I favor finding out why the AKB circuit is not functioning. It is necessary to get the set to come ON long enough to make sure the crt is heating up. You may have to manually defeat the protection circuit and force the set to come ON. If you can find the ON relay you may be able to hold it ON manually - at least long enough to find out more symptoms, but not too long or some further damage may occur. Go to: http://www.schematicsforfree.com/archive/?path=Sony%2FVideo where you may find a schematic or service manual for this set - or one that is close/similar enough to be of great value. Last comment: Some sets will, upon failure of the AKB function, after a few seconds, go into diagnostics - which is similar to protection. So, the audio may be working okey. Turn the set on with the volume up; if you hear audio for the until the set cycles into the flashing light routine it means the audio is really good. So, check that carefully. You may have to do a hard reset to cause the AKB function to reset. So, do this: Unplug the power cord for 4 hours or more. That will reset everything. Hope this helped, or gave you a general idea, but please don't take a further step unless you know the safety issues involved. Good luck

May 18, 2006 | Sony KP-61HS10 61" Rear Projection...

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