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Old 10-18-2019, 03:52 AM   #1
caveman11
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Default Toshiba 47L6453D LED Strip component



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
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Old 10-18-2019, 08:22 AM   #2
diif
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Default Re: Toshiba 47L6453D LED Strip component

Can't see it.
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Old 10-18-2019, 08:55 AM   #3
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Default Re: Toshiba 47L6453D LED Strip component

the pic or the component?
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Old 10-18-2019, 10:41 AM   #4
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Default Re: Toshiba 47L6453D LED Strip component

The burnt protection diode?
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Old 10-18-2019, 10:50 AM   #5
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Default 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?

Last edited by caveman11; 10-18-2019 at 10:51 AM..
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Old 10-18-2019, 11:32 AM   #6
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Default 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.
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Old 10-18-2019, 11:36 AM   #7
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Default 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?

Last edited by budm; 10-18-2019 at 11:45 AM..
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Old 10-18-2019, 11:58 AM   #8
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Default Re: Toshiba 47L6453D LED Strip component

Quote:
Originally Posted by budm View Post
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?


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.
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Old 10-18-2019, 01:45 PM   #9
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Default Re: Toshiba 47L6453D LED Strip component

It is for protection, not needed to function.
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Old 10-18-2019, 08:22 PM   #10
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Default 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.
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Old 10-19-2019, 08:58 AM   #11
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Default Re: Toshiba 47L6453D LED Strip component

Quote:
Originally Posted by CapLeaker View Post
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
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Old 10-20-2019, 08:32 AM   #12
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Default 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.
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Old 10-20-2019, 07:55 PM   #13
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Default Re: Toshiba 47L6453D LED Strip component

an led has gone faulty. they can fail like that. Now, turn the backlights waaay down and retest.
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Old 10-21-2019, 06:56 AM   #14
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Default Re: Toshiba 47L6453D LED Strip component

Quote:
Originally Posted by CapLeaker View Post
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?
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Old 10-21-2019, 10:48 AM   #15
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Default Re: Toshiba 47L6453D LED Strip component

Sounds like it is time to replace the whole set of the LED strips.
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Old 10-21-2019, 10:59 AM   #16
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Default Re: Toshiba 47L6453D LED Strip component

LOL, good answer Bud.
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Old 10-21-2019, 12:53 PM   #17
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Default Re: Toshiba 47L6453D LED Strip component

Quote:
Originally Posted by budm View Post
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.
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Old 10-21-2019, 01:04 PM   #18
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Default 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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