Disassemble DirecTV remote?

Check for more screw(s) behind the label/sticker. Also, you may need to have a flat edge screwdriver or knife to prise open the remote.

Most remotes or at least many snap together and some have screws as well. Pushing in on the sides will sometimes open them. If not usually a tiny screwdriver flat ended will usually get a part started and keep it moving along the edge until you can get a second one in the seam. When you get the Remote apart check the connections on the front LED. Resolder carefully not putting to much heat on it for too long. Then get a pencil with a good eraser on it and clean all the connections where the buttons strike the contacts on the circuit board. Then your remote should work and if it doesn't get a universal remote and use that after programming using manuals designed to do so.

This is likely to be the most comon button usedvand therefore your problem could be general wear. The construction of most remote controls are pretty simple. Remove all visible screw s and batteries and pry sides apart. Buttons are usually a single layer of rubber with a conductive pad underneath that makes contact with the pcb below. Cleaning the area on the pcb where the power button makes contact and the bottom of the rubber button, will in most cases resolve your problem, was h the rubber button sheet with soapy warm water is ok. Obviously dry throughly before putting back together.

Just about all handheld remotes have a carbon pad under the button that makes contact with the bare "traces" on the printed circuit board within the remote. Over time, the use and handling of these remotes gets the carbon pads remarkably dirty from the oils on our hands so the remotes are either difficult, unreliable or quit altogether. Simple solution is to take the remote apart and clean with plain rubbing alcohol and a q-tip. Remove the batteries, and look for screws that hold the two pieces together. Manufacturers like to hide screws under labels so remember to look there. In today's world alot of things just snap together and are easy to unsnap once you get started. If this is the case, use a small flat screwdriver to begin prying the top and bottom halves apart, be patient and try not to break the clips, once you get one to pop, work your way around the remote until it separates. Remove the rubber button pad and turn it over to see the carbon pads, inspect the circuit board and note where the carbon pads touch the bare traces, if these look gummy and oily this is probably your problem. Use the alcohol and q-tips to clean all the carbon pads and traces, alcohol won't harm anything so use it to your hearts content. Dry with a soft lint free type cloth and re-assemble, install the batteries, and test the remote.

Good luck

If you've tried everything on the web and still n progress , try taking the remote apart and cleaning it with a little alcohol and a paper towel. A spare tooth brush is helpful too. clean the casing, the rubber touch pad (tooth brush helps here), and the circuit board where the rubber touch pad contacts the board (not the under side).
I think the manufacturer uses a black silicone grease in there , that "gunks" it up after a while. The difference in mine is night and day. I works like new again .
It's not that tricky to take apart. Just watch the video below first before you try it to see how to take it apart and let the alcohol evaporate completely before you put it back together and put the batteries in it..
https://www.youtube.com/watch?v=f_L3VhlbdQI

Being the most used buttons on the remote, you may very well need a new one.
That said, it won't matter if you ruin this one trying to fix it.
There's usually a screw in the battery compartment, but check for screw holes under stickers as well.
The unit should be fairly easy to pry apart with a flat screwdriver after that by gently prying around the seam to release the snaps.
Once this is accomplished, you should see that all buttons are on a big rubber pad with each button having a carbon contact at it's base.
locate the channel up and volume up pads, and scrape them with a pocket knife or other sharp instrument, but don't cut them....keep the blade 90 degrees to the pad when scraping.

Reassemble the unit, and make sure you have good batteries in it.

This should fix the remote and let you use it another year or two before you have to go contact scraping again.

Once you remove the screw from the battery compartment you will need to find a long flat iten to pry the remote open, such as a knife, metal ruler or the like. There is no way to do this without marking the sde of the remote. Simply place the pry between the two halves of the remote and gently pry. You will hear a snapping sound as their are 4 internal catches on either side. Tease it apart in more than one place along the edge. and it will eventually pop apart.

If you have the slow button problem a small circle of tin foil/aluminium paper glued to the back of the rubber pad will have your remote working good as new.

Check for and remove any screw(s) in the battery compartment. Then try gently prying the two sections apart. When seperated remember where the rubber buttons (buttons are usually one single, rubber like, pad) were seated (most the buttons will only fit one way, or you will remember where they were located just by looking at it). on the remaining cicuitboard in the other half of the casing, you will see numurous black dots, these are what the rubber buttons push to make the connection that will execute the command you are trying to give your tv. With a q-tip, slightly moist (no cleaning agents!), gently brush these black dots a few times. Gently rinse the rubber (buttons) pad under luke warm water ( no cleaning agents!) taking detail to the underside. A slight cleaning will be plenty to improve the functioning of the remote. Make sure to let the parts COMPLETELY DRY before installing them back in the remote!

If this helped you (or not ), please rate, thank you!

There are a total of SIX screws. You have already found two in the battery compartment. There are four more under the GREY panel on the front of the remote. That grey panel pries out; there are two tabs on the lower sides and one on the top, above the > button, that hold it in. Should not be hard to get it out to reveal the four screws. Take them all out, and the remove easily pries apart for service access.