There are a lot of varieties of LED strips. When I suspect the LEDs I disassemble the TV and check what LED exctly they are using. Mostly it's 3V nominal voltage per LED sometimes 6V. They come in all sorts of formats. To find the number of a LED strip before disassembly you could try Shopjimmy or eBay, but I woouldn't rely 100% on that. Buying LEDs, measure nominal voltage of an intact LED, measure package size with a caliper, then go to Aliexpress or eBay, search for "backlight LED TV (voltage 3V or 6V) (package). Pay attention to anode cathode size , sometimes anode is the larger pad.

Check if the acrílic sheet is upside down. They went in one specific position. Is wider on the bottom.

Yes probably the same problem. I would also lower the LED current by chaning the shunt resistances near the controller chip to a higher value

thank you for your kind information. i have replaced a new power adaptor but problem not solved. i will try do it as your suggestion. but can you please sharing a video how and what kind of parts to swap? thank you again

Maybe the driver chip was damaged? How did you test all the LEDs? With an external PSU? Did you reconnect the LED strips.?

Please try shopjimmy or ebay and search for "(TV model number) LED strip"

Yes this can happen. They are probably about to die.

@@tomtechtod9200 you mean just replace a strip LED which have 1 unit faulty LED doesn't won't fix it?

I have the same tv. I have been having the same problem for over 6 months. I find that it happens when watching a movie that has dark scenes from a channel like HBO or Cinemax from the HDMI input from cable box or an Android movie app Iflix . I can watch a channel like CNN or the Android KZfaq app all day with no problem. I called the Sony repair here in Jakarta Indonesia, they said would have to replace the main screen, but no stock.

I have changed some settings under Picture Advanced settings: Black adjust OFF, Adv. contrast enhancer OFF. Since doing this I have been able to watch a movie, that had previously caused the TV to shut down every time a dark scene showed, completely without problems.

6 blinks, the manual says it's the mainboard as far as I remember. I think almost everything was on only single board, so that doesn't tell us much.

check the smd resistors around the LED driver chip, I've seen them getting too hot and either be defective or their solder joints are bad. the LED driver chip could then detect an open circuit and shut off. the problem can be elsewhere though as well

Hi have u sorted it now

The same problem, you mean 6x blinking LED? As far as I remember there is not much more in this TV than one PCB and the LEDs. If got the board from eBay it might be defective. Are you sure you connected the LED strips correctly before reassembling everything?

@@tomtechtod9200 thanks for your response, I had to buy original LEDS and now the tv is working.

Your model is different. In the tv from the video 6 flashes actually means main board failure, from what I remember. May be something different in your TV... LEDs is just one of the most common problems

@@tomtechtod9200 i have replaced the main board but still same problem. I suspect it's the some of the backlight LEDs. The backlight does light up before shutting down.

You could only do that if both TVs have the same panel

@@tomtechtod9200 they have the same panel in terms of screen resolution & size.

@@narvaeztiamson918 must be the same panel model number AFAIK

@@tomtechtod9200 How many led bulb does a 32inch panel has & the maximum voltage it requires to lit up all the led bulb? tnx

@@narvaeztiamson918 this depends on the panel. some have all in series, some don't some may have an edge lit display and so on. no general rule afaik

www.shopjimmy.com/sony-lb48009-replacement-led-backlight-strips-7-kdl-48w650d/ www.ebay.ca/itm/313702139081?hash=item490a1ac4c9:g:SRgAAOSwuANhXxOp I wouldn't bother replacing single LEDs

For 3V LEDs it's about 2.6. For 6V LEDs about 5.4. (per LED). Always start at low voltage and increase slowly.

Correcto, es mejor cambiar las tiras por completo.

désolé, j'en ai pas. normalement c'est vissé. chaque télé est différente.

Smd led 3228

Sorry, this is wrong. It is true that all the other LEDs were subjected to the same high current that caused some of them to fail. However, you can replace single LEDs if you lower the average current afterwards for all LEDs. I did this a lot of times and it works without problems (and without returns). The best option is to lower it on the driver PCB itself, usually by increasing the current sense resistor. Second best option is to do it via the menu (backlight), but you have to make sure to lower it for all sources and disable options that change the backlight setting dynamically.

Sorry, I would need the TV in front of me . The manual for the 470 syas 2 blinks = mainboard fault, so that

@@tomtechtod9200 its already opened up.. also i tried removing coaxial cable jack from the circuit.. didnt help.. in other videos i saw they changed two resistor smds ..one sky blue color(82k/82 somthing) and another one.. u know it used to work fine for 15 mins after the surge hit my tv..then time slowly decreased to 10 5 and now only logo comes and goes to two blink.. do i need to chk voltage in some parts of the circuits... ?? thank u for ur time bro

Assuming you don

@@tomtechtod9200 I have the exact same TV with the same problem and I'm thinking of opening it up. I have a handheld multimeter, but I wasn't sure what's the voltage that the LED should be tested with. I think I have a holder for 2/4 AA batteries so I could use those too. I just heard that you said these are 3228 LED and on eBay thay say it's 3V so I guess 2 AA batteries would be good. I don't have a hot plate but I have a heat gun and solder paste so I guess I'll do this with the heat gun. Thanks a lot for the speedy reply.

it was for me

If stuff lasted 20 years they couldn't sell us their new and improved stuff , everybody had less work and more leisure time and less awesome products and much less trash on our landfills. What an absurd idea (sarcasm)

@@tomtechtod9200 Yes I understand ... but it's a shame that these LEDs fail right after the warranty period expires. No problem making a television that would live for at least 6 years ... unfortunately this is called rotten capitalism. I hope this stops one day in any way. We humans are the biggest wound cancer in the world.