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thermal paste for TV - LEDs ?

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Posted · Original PosterOP

one of the LED inside TV is damaged, I managed to get a new set of same led stripe and replace it.

it is taped on a large plate of aluminium backplate. Do you think adding thermal paste can preserve TV better? 

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Posted · Original PosterOP
2 minutes ago, TechyBen said:

Would need a photo. Could be a light diffuser. How are the LEDs mounted?

its just taped/ glued

 

around 7th min

 

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Hi, I have seen many LED strip but never some with thermal paste. Usually, the high-power ones are glued onto an aluminum surface like it appears to be the case here. Since you aluminum backplate is large, I expect heat dissipation to be ok if the TV's ventilation slots are all unobstructed.

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Yeah. Was it heat or humidity that killed them? If it was not heat, then thermal paste is a waste anyhow. Thermal paste helps for CPUs due to the contact of the IHS/die and the heatsink. But for a gapped/glued in LED, it may need a different solution.

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1 minute ago, TechyBen said:

 Thermal paste helps for CPUs due to the contact of the IHS/die and the heatsink. But for a gapped/glued in LED, it may need a different solution.

The big difference to a CPU is the amount of heat that has to be dissipated and the contact area available. All power that goes into a CPU has to be dissipated since it becomes heat whereas a LED converts some of it into light (so not everything becomes heat, but still a fair amount).
The consumer grade LED strips I have seen have a power draw of less than 20W per meter, so it's not nearly as challenging a task as keeping a CPU cool.

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ITs still debatable that cooling is the problem here and whether adding extra cooling would fix the failure in the LED strip.

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6 minutes ago, greenhorn said:

The big difference to a CPU is the amount of heat that has to be dissipated and the contact area available. All power that goes into a CPU has to be dissipated since it becomes heat whereas a LED converts some of it into light (so not everything becomes heat, but still a fair amount).
The consumer grade LED strips I have seen have a power draw of less than 20W per meter, so it's not nearly as challenging a task as keeping a CPU cool.

I've seen many LEDs heatsinks on. But yes, most LEDs in a TV won't need em.

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