Sony KDL-40S20L1 Flashing Standby Led, No pic, No Sound

My KDL-40S20l1 standby led flashe red 4 times pauses and the flashes red 4 times and keeps doing this. There is no sound and no picture. The power button does nothing. I tried the up arrow on the remote while pushing the power button on the set, this did nothing. I tried pushing display > 5 > + > power on the remote with no results. The manual says 4 flashes on the power led is a backlight failure. The power led is not lit at all, only the standby led flashes.

7 more comments
Anonymous Aug 25, 2007

Thanks, but that's the owners manual and doesn't really tell me anything.
Anonymous Aug 25, 2007

Thanks, but that link is just the owners manual.
Anonymous Aug 26, 2007

I guess what I need to ask is, what does the sequence of four on the standby led mean? The service manual says the power led is the one that you count the flashes on. The power led does not light at all.
Anonymous Aug 26, 2007

I guess what I need to ask is, what does the sequence of four on the standby led mean? The service manual says the power led is the one that you count the flashes on. The power led does not light at all.
Anonymous Mar 17, 2014

No picture sound only, no remote functions or from side controls but green led blinks when you use remote, also switches off momentarily and back on again
Anonymous Mar 20, 2014

standby led flashes 5 times. standby led flashes 5 times.
Anonymous Mar 24, 2014

I don't know where the led button is I don't know where the led button is
Anonymous Mar 30, 2014

happened when kids turned it on & off quickly a couple of times - capacitor pop???
Anonymous Mar 31, 2014

try to power on but nothing happen. still no picture or sound

2 Answers

Anonymous

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6,966 Answers

Hi, If all else fails, try do a hard reset. You can verify from your manual, but in some units, this is merely unplugging the unit from mains for a couple of hours. Try again, if it still shows error codes (blinking lights) you probably have to seek the services of a qualified professional. Hope this be of some help/idea. Good luck and kind regards.

Posted on Aug 26, 2007

Anonymous Aug 26, 2007

Hi again,

4 blinks of the standby led - Most probably video muting caused by (in some models/version/firmware):
1. vertical stop
2. absence of source
3. video board fault

Pls note:
a. Most probably & in some models/version/firmware - Sony uses same model number but for different regions and/or different versions of the firmware and therefore the blinks may refer to something else;
b. When you press the buttons: Display, Channel, 5, volume Minus,(not plus )then Power, this normally should bring up a screen with a list of the problems and number of times they have occurred.

The blinks indicate error codes but not necessarily the exact board/component at fault. At most that it can tell you is where to start diagnosis.

Most techs (or even Sony Service for that matter) would suggest that you try a hard reset as most cases are resolved this way.

Hope this be of further assistance to you.

Anonymous

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Try some of the solutions on this link hope one will work for you. http://www.docs.sony.com/release/KDL32S20L1.pdf look under troubleshooting for no picture good luck

Posted on Aug 25, 2007

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