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-   -   Toshiba 47L6453D LED Strip component (https://www.badcaps.net/forum/showthread.php?t=80131)

caveman11 10-18-2019 03:52 AM

Toshiba 47L6453D LED Strip component
 
http://7thbrandy.com/wp-content/uplo...ip-768x370.jpg

Does any of you guys know what this blown component might be and what you would do if you had to fix it?

The component next to it has ae written on it very feintly.


Cheers chaps

diif 10-18-2019 08:22 AM

Re: Toshiba 47L6453D LED Strip component
 
Can't see it.

caveman11 10-18-2019 08:55 AM

Re: Toshiba 47L6453D LED Strip component
 
the pic or the component?

budm 10-18-2019 10:41 AM

Re: Toshiba 47L6453D LED Strip component
 
The burnt protection diode?

caveman11 10-18-2019 10:50 AM

Re: Toshiba 47L6453D LED Strip component
 
yes, any idea what to replace it with?


Or, is it suggesting a fault somewhere else that caused failure?

CapLeaker 10-18-2019 11:32 AM

Re: Toshiba 47L6453D LED Strip component
 
That’s a TVS diode and it’s shorted to GND. Remove it and short is gone, but then you have no protection.

budm 10-18-2019 11:36 AM

Re: Toshiba 47L6453D LED Strip component
 
Did you verify that you do not have shorted out or open LED's in that strip?
Can we also see the straight shot pictures instead of in the angle?

caveman11 10-18-2019 11:58 AM

Re: Toshiba 47L6453D LED Strip component
 
Quote:

Originally Posted by budm (Post 920795)
Did you verify that you do not have shorted out or open LED's in that strip?
Can we also see the straight shot pictures instead of in the angle?

http://7thbrandy.com/wp-content/uplo...19/10/led2.jpg

What's the worst that can happen if I just removed it?

close up pic added.


All leds on the strip and all others working ok.

budm 10-18-2019 01:45 PM

Re: Toshiba 47L6453D LED Strip component
 
It is for protection, not needed to function.

CapLeaker 10-18-2019 08:22 PM

Re: Toshiba 47L6453D LED Strip component
 
I am thinking same what budm said. The diode went, because there is a very likely probability that there is something wrong with that LED string first place. See, LED's are current controlled, not voltage controlled.
If you do decide to remove that diode, the short goes away and it should fire up. However, there is no over voltage protection anymore. Probably you will find out that there are some bad LED's on that strip.

caveman11 10-19-2019 08:58 AM

Re: Toshiba 47L6453D LED Strip component
 
Quote:

Originally Posted by CapLeaker (Post 920884)
I am thinking same what budm said. The diode went, because there is a very likely probability that there is something wrong with that LED string first place. See, LED's are current controlled, not voltage controlled.
If you do decide to remove that diode, the short goes away and it should fire up. However, there is no over voltage protection anymore. Probably you will find out that there are some bad LED's on that strip.

Thanks. I will let you know in a day or two how i get on

caveman11 10-20-2019 08:32 AM

Re: Toshiba 47L6453D LED Strip component
 
Removed that component...not really much of it left to remove.


Now the leds will sometimes:-

not turn on at all
turn on but go off after a few seconds
stay on

...completely at random.

All leds illuminate equally.

CapLeaker 10-20-2019 07:55 PM

Re: Toshiba 47L6453D LED Strip component
 
an led has gone faulty. they can fail like that. Now, turn the backlights waaay down and retest.

caveman11 10-21-2019 06:56 AM

Re: Toshiba 47L6453D LED Strip component
 
Quote:

Originally Posted by CapLeaker (Post 921194)
an led has gone faulty. they can fail like that. Now, turn the backlights waaay down and retest.

wouldn't it be better to turn them up to flush out the faulty one?

budm 10-21-2019 10:48 AM

Re: Toshiba 47L6453D LED Strip component
 
Sounds like it is time to replace the whole set of the LED strips.

nomoresonys 10-21-2019 10:59 AM

Re: Toshiba 47L6453D LED Strip component
 
LOL, good answer Bud.

caveman11 10-21-2019 12:53 PM

Re: Toshiba 47L6453D LED Strip component
 
Quote:

Originally Posted by budm (Post 921298)
Sounds like it is time to replace the whole set of the LED strips.

I would but its a very unusual set and can only find them abroad with long delivery times.

zomi 10-21-2019 01:04 PM

Re: Toshiba 47L6453D LED Strip component
 
Just buy them from ali express
they are about 24 delivered

they take about 2 -3 weeks to come across


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