thermal paste for TV - LEDs ?

[dgsddfgdfhgs]

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? 

[TechyBen]

To what? Your face?

 

Thermal paste on what?

[dgsddfgdfhgs]

paste on each LED to Al plate

1 minute ago, TechyBen said:

Thermal paste on what?

 

[TechyBen]

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

[dgsddfgdfhgs]

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

 

[greenhorn]

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.

[TechyBen]

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.

[greenhorn]

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.

[Ertman]

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

[TechyBen]

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.

[dgsddfgdfhgs]

thank guys, its now fixed .