Sony KDF E55A20 - 5 Flashing Read Lights


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Sony KDF E55A20 - 5 Flashing Read Lights

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Dorwrath
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Mar 17, 2012, 1:16 AM

Post #1 of 14 (18355 views)
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Sony KDF E55A20 - 5 Flashing Read Lights	Can't Post

We have had a Sony KDF E55A20 since January 2006 and it has been trouble free. I was expecting the bulb to go after about five years but so far it has been going good.

Well today I was playing and my TV went black screen. The TV was still on but the screen was black I can turn it back on and it flashes 5 red lights.

Now I can turn it back on and the picture will show for like maybe 20 seconds and then it will go back to the black screen.

I am thinking its more than just the bulb if the picture is there for so second or could it just be the bulb?

Any ideas because if its just the bulb I can change that out myself, but if its more than just the bulb I'm not sure if it will be worth getting a tech into fix because I presume it will cost a lot to fix it.

Thanks

mel
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Mar 17, 2012, 3:09 AM

Post #2 of 14 (18338 views)
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Re: [Dorwrath] Sony KDF E55A20 - 5 Flashing Read Lights [In reply to]	Can't Post

Five blinks indicates the lamp or lamp driver. Given the age, I would suspect the lamp first.

Ron.M
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Mar 17, 2012, 4:03 AM

Post #3 of 14 (18328 views)
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Re: [Dorwrath] Sony KDF E55A20 - 5 Flashing Read Lights [In reply to]	Can't Post

Dorwrath;....

I concur with mel...
Altho you do not say which light is flashing red , you have a light on the front that is for the lamp ONLY...
If you do not have the user manual , get it here & start on page 11.:=>...
http://www.retrevo.com/...myTrevo.jsp?page=man

Select manual #1 , scroll down to enter the captcha number to start the download..

IF your lamp does turn out to be bad , some advice:=>..
Use ONLY NEW Sony Replacement lamps...
Do NOT use generic or substitute lamps...
They are known to be DOA , start & run erratically & have a reduced lifespan..

Good Luck &
Have fun...

Have a GREAT evening.... Sly

...

Later...Ron.M.... Cool

...
Veteran & Retired TV technician

(This post was edited by Ron.M on Mar 17, 2012, 10:54 PM)

Dorwrath
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Mar 17, 2012, 4:09 AM

Post #4 of 14 (18323 views)
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Re: [Ron.M] Sony KDF E55A20 - 5 Flashing Read Lights [In reply to]	Can't Post

Sorry I didn't say which light was flashing. The TV will switch on fine green power lights. Then after about 20 seconds the screen will go black. If I turn off and turn on the power light will flash red 5 times.

Leave it off for a bit and it will do the same.

(This post was edited by Dorwrath on Mar 17, 2012, 4:09 AM)

Ron.M
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Mar 17, 2012, 4:20 AM

Post #5 of 14 (18317 views)
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Re: [Dorwrath] Sony KDF E55A20 - 5 Flashing Read Lights [In reply to]	Can't Post

Dorwrath;....

I still think you have a bad lamp...
IF you decide to go that route , make SURE that the seller has a no-hassle refund policy in case it's not the lamp....(In writing !!!)...
That way you lose NO money by trying the obvious...

Good Luck... Sly

...

Later...Ron.M.... Cool

...
Veteran & Retired TV technician

Dorwrath
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Mar 17, 2012, 4:31 AM

Post #6 of 14 (18314 views)
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Re: [Ron.M] Sony KDF E55A20 - 5 Flashing Read Lights [In reply to]	Can't Post

Thanks, I been trying to find out what the flashes mean on the power light. 6 is thermal fuse but I doubt it would be that.

# flashes was like the lamp not in there properly.

Never found out what 5 flashes is.

You don't know any trust worthy sellers . I would have to order online anyway.

Dorwrath
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Mar 17, 2012, 4:43 AM

Post #7 of 14 (18312 views)
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Re: [Ron.M] Sony KDF E55A20 - 5 Flashing Read Lights [In reply to]	Can't Post

Now this is strange. I turned the TV back on and it did the same thing.

However I pressed on the cover part thats in front of where the bulb goes and the screen came back again.

So I am wondering if the lamp somehow has got loose.

Its late now, but tommorow I guess now my first course of action would be to check if it has come loose somehow. I can't imagine how though, weird.

Thanks you have helped very much and I hope its something simple. Much appreciated :)

Dorwrath
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Mar 17, 2012, 2:55 PM

Post #8 of 14 (18307 views)
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Re: [Ron.M] Sony KDF E55A20 - 5 Flashing Read Lights [In reply to]	Can't Post

I wanted to add some more because I have a feeling it maybe more than the bulb or it might be the bulb anyway.

I turn it on, power light flashes green. After about 40 seconds it goes black screen. Then about 20 seconds later the screen will come back, 40 seconds later the screen will go black again rinse and repeat.

At no point during that does any red light flash. However if I turn off and turn on the power light will flash red 5 times.

Sorry I should have waited longer to see what it was doing over time.

(This post was edited by Dorwrath on Mar 17, 2012, 2:56 PM)

Ron.M
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Mar 17, 2012, 6:25 PM

Post #9 of 14 (18291 views)
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Re: [Dorwrath] Sony KDF E55A20 - 5 Flashing Read Lights [In reply to]	Can't Post

Dorwrath;.....

According to this website;=>...
http://www.ecoustics.com/tl/15444/
5 flashes are :=>...

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.""
BUT , that does not apply to your set as that code is for projection sets that have 3 CRTS & do NOT use a lamp...
Your TV does not have that...
I'm going to do a search for the service manual for your TV & see what I can find out...
Need some time for that...

Quote

6 is thermal fuse but I doubt it would be that.

Where did you get this from ???
Do you have the service manual ???
Would you be willing to share it ????

Quote

I turn it on, power light flashes green. After about 40 seconds it goes black screen.

Do you see a pix during those 40 seconds ???

Quote

However I pressed on the cover part thats in front of where the bulb goes and the screen came back again.
So I am wondering if the lamp somehow has got loose.

Press & hold the cover for about 2 minutes...
Does the pix stay on ???

As for the lamp cover....

Make sure the set is unplugged & the lamp IS cool..
I suggest you remove the lamp completely...
Then re-install it making sure that all screws are tightened securely....
(Do not over tighten the screws)
See if that helps any...
There is a possibility that the cover switch is acting up...
Please post results...

Quote

You don't know any trust worthy sellers . I would have to order online anyway.

When you pull the lamp out , get the number from it & post it...
I will see what I can find out for you...

Have a GREAT St Patty's Day.... Wink

...

Later...Ron.M.... Cool

....

Veteran & Retired TV technician

(This post was edited by Ron.M on Mar 17, 2012, 6:37 PM)

Dorwrath
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Mar 17, 2012, 7:30 PM

Post #10 of 14 (18281 views)
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Re: [Ron.M] Sony KDF E55A20 - 5 Flashing Read Lights [In reply to]	Can't Post

I found a copy of the service manual. It says nothing about 5 red flashing lights. All it says is about 3 red flashing lights and that is that the bulb is loose .

Ignore the part about me pressing the cover and the pic coming back. It just coincided with the picture returning.

For the 40 seconds there is a picture, seems to be just as good as it was before this issue started, but after the 40 seconds just black screen, not even any channel headers, nothing but black. Then 20 seconds later the picture will reappear just as good as before.

I got the manual online from here

http://esupport.sony.com/...=manuals#/manualsTab

Thank you again Kind Sir

(This post was edited by Dorwrath on Mar 17, 2012, 7:30 PM)

jts1957
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Mar 17, 2012, 7:35 PM

Post #11 of 14 (18279 views)
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Re: [Ron.M] Sony KDF E55A20 - 5 Flashing Read Lights [In reply to]	Can't Post

http://elektrotanya.com/...egoria=&kat2=all

-------------------------
Location: Far, Far Away

Ron.M
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Mar 17, 2012, 11:24 PM

Post #12 of 14 (18264 views)
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Re: [Dorwrath] Sony KDF E55A20 - 5 Flashing Read Lights [In reply to]	Can't Post

Dorwrath;....

The link you posted is for the User Guide/Owners Manual...
It is NOT a service manual...
I did not download it....
Thanks anyway... Wink

...

jts1957;....
Having trouble with Elektrotanya webpage...
So I did your trick & Googled it...
Thanks anyway.... Wink

...

Dorwrath;....

In the Service manual , 5 blinks is as follows;=>...
This is for the POWER led ...

5 : Lamp driver When the "LAMP-PROT" (pin 95 IC6902) is low, the lamp is not turned on. If the "LAMP-HV-DET" (pin 96 IC6902) is low at the same time, it is classified as no high voltage of the lamp driver....

Check for this;=>....

Lamp error LAMP-LED is ON. - Lamp is dead - No picture/No sound

Now , since this can get confusing , I go back to my original suggestion;=>...

Quote

I still think you have a bad lamp...
IF you decide to go that route , make SURE that the seller has a no-hassle refund policy in case it's not the lamp....(In writing !!!)...
That way you lose NO money by trying the obvious...

The reason is below...
This can get involved , but , I really think this would be a good place to start...
Your call....

Quote

since January 2006 and it has been trouble free. I was expecting the bulb to go after about five years but so far it has been going good.

That's a long time for a lamp...(5 , going on 6 years)
With normal usage , the lamp is due for replacement...

Good Luck & please keep us updated....THANKS.... Sly

....

Have a Happy St Patty's Day..... Sly

...

Later....Ron.M.... Cool

...
Veteran & Retired TV technician

Dorwrath
New User

Mar 17, 2012, 11:34 PM

Post #13 of 14 (18262 views)
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Re: [Ron.M] Sony KDF E55A20 - 5 Flashing Read Lights [In reply to]	Can't Post

So the errors are saying its the lamp driver, but the bulb could well be causing the issue?

If I replace the lamp and its still doing it, I presume it must be the lamp driver.

There is no lamp LED light flashing or on, just dark like its always been.

I think I will get a bulb, Im hoping to get it through for a year and then we will upgrade next tax season.

Thank you so much, it really appreciated :)

Ron.M
Veteran

Mar 18, 2012, 12:34 AM

Post #14 of 14 (18261 views)
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Re: [Dorwrath] Sony KDF E55A20 - 5 Flashing Read Lights [In reply to]	Can't Post

Dorwrath;....

Quote

So the errors are saying its the lamp driver, but the bulb could well be causing the issue?

That would be my guess...

PLEASE REMEMBER this;=>...

Quote

IF you decide to go that route , make SURE that the seller has a no-hassle refund policy in case it's not the lamp....(In writing !!!)...
That way you lose NO money by trying the obvious...

Just in case it's not the lamp...

GOOD LUCK.... Sly

....

Later...Ron.M.... Cool

...
Veteran & Retired TV technician

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