How can I make the image on tv screen smaller?

Press the Format button. It's directly below the power button. It has a symbol of a rectangle with a double-headed arrow inside.

Press it to cycle through the different picture shapes.

Use picture menu and adjust screen resolution or size.

Move the projector closer to the screen.

Check the menu settings for the picture. You may be expanding the image to fill the sides, in the process, cutting the top and bottom.

Hello there... You access its zoom. Zoom it out (until you get the desired or normal size) or simply turn off its zoom. Hope this helps... Ai-ai

That symptoms are due to failure of convergence out ICs in your TV that will be replaced to get correct converge picture on front screen.

There are 2 big black IC mounted on big aluminum heat sink and number would be written on as STKxxx, these 2 ICs will be replaced.

If you want to repair TV by yourself then confirm model number of TV to provide you more info or call local tech to replace said ICs.
Thanks.

What you will need to do is grab your remote that came with the tv - click "Menu">select "Settings">go down to "Screen" and make sure that:

1. Wide Mode reads "Full"
2. Auto Wide reads "On"
3. Display Area reads "Full Pixel"

Hope that helps.

Is there a zoom or ratio button on your remote?

Good Day, deon453;
Sounds like a convergence problem.
Corrective Action: Replace the defective Convergence Output IC Part Number 23905094 (STK392-110) using the revised “T” version IC Part Number 23135090 (STK392-110T). When Convergence Output failure is
detected, it’s recommended that both IC’s be changed to the “T” type IC
version.
Good Luck, Big Irish.