Tapcon TV Mount on Concrete Wall | concrete screws in cinder block holding up a TV 

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They worked well for my wall, but be sure to test the mount to make sure it doesn't budge because it will only be as strong as the wall

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This video should answer that: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-srQLcR9DY54.html

As long the concrete is in good shape, the holes are drilled at the right size, the dust is blown out, and the screws are installed properly then you should be fine

Yep, I concur. I’d say don’t use the conical head Tapcons. Use the hex head ones with the flat washer bushing. Make sure that hole is really cleaned out.

The drill bit needs to be smaller than the screw threads. The package will tell you the size for the screw: 3/16" bit for the 1/4" screws for example.

A ceiling mount with lag bolts into the ceiling joists would likely be the most secure there as well as easiest option. If you don't like the look of that and need it on the wall, consider a flat mount (more secure) and long Tapcons in the bricks after drilling deep enough, cleaning out the brick dust, and using spacers the size of the space between the bricks and the mount. The problem is the air gap, so you need either spacers or cut out a piece of plaster/lath to attach wood to the brick. Drill and mount onto old bricks at your own risk!

You have 1 1/4" inch between the mount and the concrete, so you need at least 2 1/4" long screws to have 1 inch embedded in concrete. You could use either 3/4" metal spacers to fill the gap between the drywall and concrete, but personally I would try a one-stud mount and drill through one of the 1x3's and drive screws into the concrete with at least 3 screws.,. But be sure to install the concrete screws properly.

I use the same Tapcon screws in brick for TV mounting or anything else like I do in this video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-rRpi1usP7_c.html, (edit: the same 1/4" screws). You can also use the plastic anchors but for the lag bolt sleeves that's a lot of drilling

If it wasn't deep enough, it would probably just spin and strip the hole. I've had the small Tapcons heads pop off but never a larger one. It just must have been really dense material or maybe you weren't holding the drill perfectly straight (when you drilled the hole). If you still have that hole, I'd use a plastic expansion anchor and maybe even drill a larger hole for a larger anchor.

I'm putting up a video of just that today; I used 1/4" Tapcons to attach wood to brick. It's very important to 1) drill deeper than the screw length, 2) clean the hole of debris and dust, and 3) do NOT over-tighten. If you're not used to driving TapCons, it may be wise to use a socket wrench, especially at the end, otherwise you may over-tighten and strip the hole. If the hole is stripped, you can use a plastic anchor and screw because the hole will probably not work with the Tapcon any more.

Handrail malfunctions can cause major injuries so I would recommend getting an insured contractor to install it. If installed properly, the Tapcon screws used in this video should hold hundreds of pounds of weight.

5/16″ x 2¼

If installed properly, at least 4 concrete screws into at least 1 inch of concrete should hold up most TV mounts. But as always the mount is only as strong as the wall so if the wall is crumbling, cracked, damaged, or if the holes are drilled wrong and the dust not blown out, etc, you will have problems.

Where did you buy your blow air bottle? Compressed air is very expensive.