Replace PSU Heat Shield or Not?

[johnboy1313]

This Samsung LN52A750 had a heat shield over the PSU. Should I put it back on or not?

[johnboy1313]

Re: Replace PSU Heat Shield or Not?

Pic of the shield.

[tom66]

Re: Replace PSU Heat Shield or Not?

It's not a heat shield, it is an EMI shield. It's not critical and it may run cooler without it, but it will not be FCC compliant any more. I doubt it matters to you.

[johnboy1313]

Re: Replace PSU Heat Shield or Not?

It's not really if it matters to me. It's if it matters to whoever buys the tv. I'm selling it to a close friend of mine and I'd prefer that it doesn't hassle him.

[tom66]

Re: Replace PSU Heat Shield or Not?

I don't see it mattering.

[johnboy1313]

Re: Replace PSU Heat Shield or Not?

Right on, thanks

[T30M31]

Re: Replace PSU Heat Shield or Not?

It may matter if your friend or any of his neighbors use medium wave or shortwave radio receivers. The shield will reduce the emission of signals that may cause harmful interference to these receivers. This would include receivers for the AM broadcast band, shortwave broadcast bands, amateur/ham radio bands, and citizens band.

[tom66]

Re: Replace PSU Heat Shield or Not?

It may matter if your friend or any of his neighbors use medium wave or shortwave radio receivers. The shield will reduce the emission of signals that may cause harmful interference to these receivers. This would include receivers for the AM broadcast band, shortwave broadcast bands, amateur/ham radio bands, and citizens band.

This is a good point, but do remember that the most common sources of interference aren't unshielded SMPS like this (the noise rarely extends beyond 1MHz, which only just enters radio bands) but poorly designed transmitters, leaky LO from crappy receivers, and those Chinese computer PSUs with absolutely no line filtering at all.

This shield probably just added a few dBs attenuation and got them into the OK band.