1

This needs to carry a huge 77 inch TV. There are 4 screws like that. However, while trying to put the tv on the mount I managed to get it stuck in a weird way and the dowel broke out the wall and left a huge hole.

Can I somehow repair this whole and use it again? I don't want to move the TV elsewhere. Or should I just make two more holes in the middle of the mount and leave the corner alone?

How important is it to have lots of space between the dowels?

Can I use foam or simply mix gips to plug the whole and then just put a new dowel there?

This is how it looks:

enter image description here

This is the dow (rigips type):

enter image description here

Mount: enter image description here

The mount outer holes are about 37cm width, 10cm height.

Currently it looks like this, with only one side to the stud, hope thats reasonably safe?

enter image description here

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  • 21
    You trusting drywall/plaster to hold a big expensive TV. Good thing you were holding the tv. Do it right and find the studs. If the studs are not in the right place, screw in thick plywood or 2x4s across the studs. Screw in mount and you don't worry when the tv falls down.
    – crip659
    Dec 21, 2023 at 20:25
  • The mount is what came with this oled77 g series TV. Its pretty small. Dec 21, 2023 at 23:22
  • This is better than four anchors for this purpose -- it's been holding my 40-something-inch TV in very flimsy drywall for a long time -- but even it is not rated for the size of TV. Dec 22, 2023 at 4:52
  • Add an image of the mount if you're interested in exploring the option of drilling new holes over wall studs. The stud spacing and mount dimensions are important information.
    – popham
    Dec 22, 2023 at 10:08
  • See these related questions.
    – FreeMan
    Dec 22, 2023 at 13:35

3 Answers 3

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Simply put, you can't reuse that type of anchor in that hole even if you patch it. The paper backing is where the strength resides, and that's compromised. Use a winged toggler if you must keep it there.

I can't imagine why you wouldn't attach to framing, though. Over and over again the question of large televisions come up on this site, and the recommendation is always to either attach to studs or overlay a rigid plate of some sort to span between studs.

Based on new information, see also How can I mount a TV tight to the wall with steel studs?

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  • How do I go about installing a rigid plate? Do I then use regular screws to srew the mount to the plate and the plate is fixated exclusively to the studs or also to the drywall between the studs? Any good tutorials? Dec 21, 2023 at 23:32
  • Depends how neat you want to make it - done properly it will be entirely hidden behind the TV, so something as simple as nailing a sheet of plywood to the nearest two studs, over the top of the plasterboard (sheetrock/drywall) would do. Much neater would be to cut out a section, screw the plywood in, then skim over the top with plaster, but that requires much more effort/skill.
    – MikeB
    Dec 22, 2023 at 9:27
  • Added a picture. My studs seem to be metal. So do I just use wood screws that go as far as the plywood goes (18mm plywood, 18mm screws) ? Is plywood even strong enough to hold 40kg tv? Or should I use drywall dowels that go through the plywood and the drywall behind it? Dec 22, 2023 at 11:08
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You are lucky that’s all that broke.

As noted in the comments, 4 fasteners into drywall/gypsum are completely inadequate for a heavy tv.

You need to find the studs and screw solidly into the middle of them. If your studs are placed wrong, there are plenty of questions you’ll find here where people screw plywood to studs and then the tv mount to the plywood.

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  • What if I go for the concrete behind the drywall? Its about 5cm behind the drywall? Not sure how to find the studs and if they are wooden or metal. Dec 21, 2023 at 23:19
  • You can mount into solid concrete (be wary of hollow blocks), but you’ll want to use washers to bridge the gap between the concrete and the outside face of the drywall. Dec 21, 2023 at 23:47
  • 2
    @user1721135 Your problem with that is 5cm of leverage on the screws. That's not just a problem for the screws, but also the leverage damaging the concrete and causing failure that way. A ply board to fix the TV to, and multiple screws to spread the load, would solve that problem. But then if you're putting up a ply board, you might as well fix it to the studs instead, as everyone else has already suggested.
    – Graham
    Dec 22, 2023 at 8:26
  • Do I fix the tv to the board using wood screws or should they go through the board and drywall? Dec 22, 2023 at 8:53
  • 1
    yes, metal studs are almost exactly the same procedure. Just try to find a screw that specifically mentions metal on the box (generally fine-pitch screws).
    – flaviut
    Dec 22, 2023 at 17:55
5

Assuming you want to center the tv and there are no studs where you want to hang it. You are going to have to patch the hole from the old lag anyway, so cut a rectangle out of the sheetrock from stud to stud, wide enough to hold a 1x4 (or piece of 3/4" plywood if you need a large mount. Keep the cut-out to put back later. Mount some backing to the studs, set back so the 1x4/plywood can mount to it and the sheetrock can mount to that. Screw old sheetrock to backer board. Tape/texture to match wall. Paint. Pre-drill holes for screws to avoid any splits (not a concern if you use 3/4 ply).

My pic of this: enter image description here

Larger hole to patch, but all the same steps are necessary so it won't take any more time and will give you a secure place for mounting.

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  • I wouldn't cut out the drywall. That's overly destructive with little benefit. It'll practically disappear behind that huge TV.
    – isherwood
    Dec 22, 2023 at 15:23
  • Probably not an issue, but metal studs won't carry much pointed pulling weight from the front. The torsion strength is from the side (I-beam effect). Depending on the weight and leverage potential (arm extension for tv, for example), you might consider something stronger (like screwing into the sides of the studs with lateral wood supports).
    – RG Hughes
    Dec 22, 2023 at 15:59
  • You don't actually need a hole that big in the drywall. If you cut a narrower hole, just a bit smaller than the mounting plate, you can still fit your wood in.
    – Huesmann
    Dec 22, 2023 at 17:15

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