Choice of tape for LCD repair (EMI/RF tape?)

It is an insulated metallic tape. Both outside surfaces are normaly not conductive. The idea of this tape is to shield from electrical interference of which is mostly RF.

When servicing LCD screens and not replacing this tape, I found that at times there were interference problems. This is why the manufactures went to the extra expense to use this type of tape.

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JANA _____

There are several types of "metallic tape" or "aluminum tape" in the market, but I'm not sure what kind of characteristics I'm looking for, and I really don't know what the LCD display needs it for anyway

-reducing electromagnetic and radio interference and taking away heat?

I first thought the tape should be electrical conductive, but using a continuity testing function in a multimeter this seems not to be the case. So what am I looking for? Will this do?:

What kind of intereference? Problems with wireless networking on a laptop? I was under the impression that the tape was used to prevent the LCD from overheating as well, but leaving it out won't cause any actual physical damage then?

NoSp wrote in news:483991b9$ snipped-for-privacy@news.broadpark.no:

You might cause interference with nearby shortwave radio equipment and even with police and fire department or aircraft navigation equipment. You need to be cautious about removing anything related to reducing Radio Frequency Interference.

You could probably stick down some aluminum foil using double-stick clear tape. Put a layer of clear tape on top if you want to insulate it as the original apparently was.

You might be right. I wouldn't have guessed that but it may have some such effect.

I would not leave it out. I would replace it with something as close as possible to the original.

If you remove the metal tape, and not put it back, you can cause interference internally in the monitor, the computer near to it, with public service communications in the area, and possibly with other external devices.

Many of the electronics parts suppliers that supply parts for communications systems also sell insulated metal shielding tape. You can also go to a hardware store and buy metal tape, but it must be surface insulated for safety issues. You don't want such a large area of conductive metal being exposed in case something touches it, or it touches the circuit board or other parts.

Whatever metal you use for shielding, it must be properly grounded to have the effect. If not, it will become an antenna and even worsen the emitted radiation. In some cases we found the length and width of the metal to also have an effect on the characteristics of its shielding effect. This can be seen with a spectrum analyser using an antenna probe.

I've just purchased a roll of "aluminum tape" at a local hardware store. Didn't cost much. They had a multimeter at the store and I got to check that the outer surface is conductive while the inner surface (the sticky side) doesn't conduct electricity. Its acrylic glue surface is protected against moisture, UV, heat and aging and can stand temperatures up to 120 degrees C for short periods of time. The store had no idea if it could be used for shielding electronics (I don't even know if they understood what I meant).

Does that sound like something I can use, or do I need to look for something which is specifically named "shielding tape" or similar?

That stuff should be fine, give it a go.

It will be fine and should work without it as well.

Mike