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Sony KDFE55A20 problems

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Old 02-21-2009, 03:46 PM   #1  
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Default Sony KDFE55A20 problems

Like most others that I have found while doing internet searches(which is how I found this forum) My Sony KDFE55A20 TV decides by itself when it wants to shut off and turn on. It does this quite often, 3-4 times per hour and it is getting quite frustrating. I have replaced the bulb and it seemed to work fine for the first 3-4 hours. Also when I was replacing the bulb after installing it in the housing and while starting to put it in the TV part of the ceramic (ballast maybe) fell out. It was part of the area that is around the stud where the wire goes. The nut and wire were still tight and there was only a small part of the ceramic broke off. I thought it would be no big deal but now am wondering.

Question, would that broken offf ceramic or ballast be enough to cause the TV to continue to keep shutting down and restarting or should I be looking for something else.

I am really quite upset with Sony's customer service as the guy I talked to there was clueless.
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Old 02-21-2009, 03:50 PM   #2  
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The piece fell off your new bulb or your TV?
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Old 02-21-2009, 04:18 PM   #3  
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It was off of the new bulb.
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Old 02-24-2009, 03:48 PM   #4  
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A few random thoughts:

Is the cooling fan working properly. Malfunction could be causing the TV to shut down.

Most units with replaceable bulbs have a safety feature on the bulb door to ensure door is put back on before TV will operate. Possible faulty connection there.

Why did the bulb have a piece come off it? Mis-handling or factory defect? If the latter, take it back.

Do you use a universal remote? Could be messed up and sending an on/off signal at the wrong time.

Are you getting normal power to the tv. Voltage fluctuations could be screwing things.

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Old 02-25-2009, 03:21 AM   #5  
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I believe the issue is caused by a mis-placement when you replace the bulb. I'd suggest to return the bulb (since it has a defect) then purchase a "bulb w/ housing" which could minimize the risk of mis-handling when performing the replacement.
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Old 02-25-2009, 07:59 AM   #6  
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Thanks for the response borms. The broken piece came off of the new bulb when I went to install it. I'm not sure if it was a defect in the bulb or caused by me tightening the nut to much. Either way the seller has been very pleasant to work with and is sending out a new bulb with housing, should be here today. The ceramic or ballast on the bulbs is very delicate and the slightest of overtigthening the nut will cause failure. The seller is sending a new one out free of charge and I suspect that this will solve the problem.
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Old 02-25-2009, 08:54 AM   #7  
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Quote:
Originally Posted by Ranger429 View Post
Thanks for the response borms. The broken piece came off of the new bulb when I went to install it. I'm not sure if it was a defect in the bulb or caused by me tightening the nut to much. Either way the seller has been very pleasant to work with and is sending out a new bulb with housing, should be here today. The ceramic or ballast on the bulbs is very delicate and the slightest of overtigthening the nut will cause failure. The seller is sending a new one out free of charge and I suspect that this will solve the problem.
As per Sony when replacing bulbs or bulb assy's DO NOT OVER TIGHTEN. Just install and gently snug attaching hardware. it's very probable you caused the delicate ceramic fitting also do not touch the bulb with your fingers touch only the housing. the oils on your skin can and will contaminate he bulb and cause failure.
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Old 02-25-2009, 09:12 AM   #8  
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As per Sony when replacing bulbs or bulb assy's DO NOT OVER TIGHTEN.

That's why I spent the extra money for a bulb with housing, don't want to make the same mistake twice. Thanks for the heads up on the touching the bulb, I was aware of that.
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Old 02-25-2009, 05:05 PM   #9  
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Let us know if problem solved.
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Old 02-25-2009, 05:22 PM   #10  
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No clapping yet borms. The problem is not solved. With the new bulb replaced it still shuts down on it's own. I have pulled the back of the TV apart and cleaned the dust that had built up inside of it thinking that it was an overheating issue. That has not solved the problem either. I get about 30 green flashes between the shut off/restart cylce. Once in a while it will only flash 9 times but on average it is 30 flashes before it turns back on. I'm stumped.
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Old 02-25-2009, 05:30 PM   #11  
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Can you hear the fan running?
Does your manual give any indication/ideas about the flashing lights?
I know you had less than adequate help from Sony support but did thay give you any ideas?
How old is the TV?
Is this your first bulb replacement?
Sorry 'bout the premature
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Old 02-25-2009, 05:36 PM   #12  
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There are actually two fans, both of which are running. Sony help blows, they basically told me to unplug it and let it sit 15 minutes and if it does it again then call back and we'd go from there.

It is the first bulb replacement and the TV is about 2 years old. The old lamp had 8955 hrs on it. I have also reset the lamp timer in the Tv.

I need to load the manual for it as I cannot find the one that came with the TV. I've pretty much tried here and another forum to see if there was any help. It seems to be quite a common problem with this model of TV, a Google search turned up quite a few others that have the same problem as mine.

It's quite frustrating when you spend over 1K for a TV and it fails in 2 years. I've had old tube type TV's last for decades.
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Old 02-27-2009, 11:07 AM   #13  
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Well the TV has been on for a solid 4 hours this morning and has not shut off but it now has about 10 vertical lines on the left side of the screen. It did shut down/restart on it's own last night to.
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Old 03-01-2009, 07:54 AM   #14  
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BTT

The TV does not shut off as much but now it gets a bunch of black and red lines vertically in it and when the lines show up I have no control over the TV.

I'm about ready today to go to the Circuit City that is closing up and buy a Panasonic TH58PZ800U that they have on clearance. It is brand new in the box for 2199.00
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Old 08-10-2009, 04:44 PM   #15  
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BTT

The TV does not shut off as much but now it gets a bunch of black and red lines vertically in it and when the lines show up I have no control over the TV.

I'm about ready today to go to the Circuit City that is closing up and buy a Panasonic TH58PZ800U that they have on clearance. It is brand new in the box for 2199.00
Hi,it sounds like a problem with the light engine or digital board.you will need to replace it in orderto fix it.
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