Question about Sony KP-53HS10 TV

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Akb error signal produced and TV goes to shut-down state

Wow, you know your stuff!

"AKB is White-Balance signal and it is not proper or maintained in your TV. So error signal produced and TV goes to shut-down state."

Is this something I can fix by resetting something?

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Yes mate, you can fix it if you know basic know-how in electronics. pls confirm to get further help as projection TV has high voltage risk inside and I want your safty 1st.

Posted on Aug 14, 2008

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I have a sony trinitron kv36fs210, no sound no picture, stand by light blinks 5 times, tried unpluging for 24 hours, same problem. google searched problem,results found akb circuit problem, im not a tv...


It seems to be a problem to the power supply unit. I would suggest you have a look at the circuit board and look for capacitors that could have a popped up head. If you notice any, replacing it would solve your problem. I had the exact issue with my tv and fixed it that way. If you have any question please do not hesitate to ask, good luck.

Aug 30, 2011 | Sony FD Trinitron WEGA KV-36FS120 36" TV

1 Answer

1) I have a Sony KV-32FS13 that has a green tint in the picture. Does any oneknow how to access the service menu for this model? I tried other adjustments and I can't get rid of the annoying green...


Code 5 is "AKB error". AKB, or auto kine bias, is a cicuit that monitors the three color guns of the picture tube (red, green and blue) and tries to adjust them for proper color balance. If it can't, the picture is blanked (usually) and the timer/standby light blinks 5 times. When the color drives aren't balanced, you see a color tint in the picture like you're describing.

There might be a problem in the AKB circuit, or the picture tube may just be old enough that the AKB circuit has run out of adjustment range. If the tube is at fault, you should consider replacing the set. A new tube will cost nearly as much as a new 32-inch LCD TV, and you'll need to pay someone to install it and set it up. There are special tools required to perform the convergence which gets the color guns aligned with the face of the tube so they hit the right colors.

If you'd like to try tinkering with the service menu adjustments, this site explains how to access the menu and gives a list of settings.

Jan 02, 2011 | Sony KV-32FS13 TV

1 Answer

The tv is at least 17 years old.The blinking red light blinks 5 times ,then the tv picture goes off . The voice is still on


Five blinks is the error code for an AKB (auto kine bias) error. What this means is that the set isn't able to balance the three color guns (red, green and blue) of the picture tube properly, and it's blanking out the screen.

To get the proper colors, the signals for the three colors need to be balanced, and Sony sets have circuitry to do this automatically. Other brands don't, and when they go out of balance you see a picture that starts to show tinting or colors that are off. As the picture tube ages, it gets harder to adjust the balance until finally the AKB circuit can't anymore, and poof, the picture goes away. With a 17-year-old tube, it's not surprising.

There isn't anything that can be done to fix the picture tube, it would need to be replaced. But the cost of the tube and the work required to get it set up after installation makes it completely uneconomical to repair this TV. A new picture tube is nearly $200. Then special tools are required to set the tube up (a process called convergence), so you'd need to find someone to put it in, and possibly pay to have the old one disposed of. A new 32-inch LCD set is around $350 now. Treat yourself to a new one.

Jan 01, 2011 | Sony FD Trinitron WEGA KV-27FS120 27" TV

2 Answers

My screen keeps losing the red colour


not absolutly sure but it sounds like one of the crt's are starting to fail. Sony has a white balance circuit that constantly will attempt to correct for white balance errors, if it has a hard time fixing the white balalnce what you describe can happen. Durring these events your tv's power button can blink in repeating pattern of 5 blinks indicating an akb or auto white balance error. Eventually the picture may flicker on and off or the tv will shut down all togeter with a 5 blink error. But i cannot be sure without looking at it myself. There are other causes aswell; focus block, or a crt driver can cause simular issues. But given the age of this set i feel it is a better chance one of the crt;s are going bad. But again it could be the other things i mentioned.

May 07, 2010 | Sony KP-43HT20 43" Rear Projection...

2 Answers

Tv keeps turning itself off and the white in the picture looks alittle off.


To get the right colors, especially a plain white, requires the right mix of red, green and blue from the picture tube. Sony TV sets have a circuit called AKB that automatically keeps the picture tube balanced by adjusting the signals to it. If that balance can't be achieved it shuts off the picture. This may due to tube aging so one of the color guns is too weak to adjust, or failure of parts in the AKB circuit itself. If the sound stays on and the power light starts blinking when the picture goes off, this is likely why.

On the other hand, if the set is turning off completely with no picture, sound or power light, the set may have power supply problems or defective parts in the picture tube high voltage circuits.

Since there are several possible causes, this set needs to be checked by a technician who can diagnose the problem and decide what needs to be done. It's not a simple thing I can point to and say "change this part". If the picture tube is the cause, it's better to replace the set. Otherwise get an estimate, then decide whether to fix or replace.

Apr 04, 2010 | Sony FD Trinitron WEGA KV-36HS20 36" TV

3 Answers

KP-57WS520 Sony Projector - No picture


Hi,
5 times blinks shows incorrect white balance (AKB) error. TV needs Screen Volts (G2) adjustment.
Take off lower front panel, find Focus Block that has 6 control knobs, adjust Screen volts of each CRT (red-green-blue) and problem will be solved.
Be Careful while working in TV.
Let me know if you have further question.
Thanks.

Dec 09, 2009 | Sony KP-57WS520 57" Rear Projection...

1 Answer

Sony Wega Kv-36XBR250 screen blinking


I have seen this flashing before, this could be an indication that the picture tube is weak, what happens is that if the white balance is off there is a circuit called akb it monitors the kathode of each gun and if they are not in balance it will attempt to balance it out. if it can't the picture will begin to flash, sometimes in some models the power light will blink 5 times. On some models the power light will only flash if the tv gives up trying to compinsate for white balance and shuts off compeletely. If you see the tv shutting off with 5 blinks then you know for sure it is time for a new set.

Sep 02, 2009 | Sony FD Trinitron WEGA KV-20FS120 20" TV

1 Answer

'standby' mode and akb error number


AKB 66 in self diagnostic test means...TV goes to standby (shut-off) for AKB problem 66 times. AKB is White-Balance signal and it is not proper or maintained in your TV. So error signal produced and TV goes to shut-down state.
Regardnig Standby button, its available on remote only. If you push TV Power switch, TV will switch ON, push it again to OFF TV. Power Button on remote set TV in standby status and you dont need to push power button of TV itself.

Aug 14, 2008 | Sony KP-53HS10 TV

1 Answer

AKB?


its a white balance failure . check the drive transistor on each of CRT pc boards one of them may be defective also. What is the model number of your set?

Jul 03, 2008 | Sony KP-53XBR200 53" Rear Projection...

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