My VR helmet broke, it doesn't react to my head moving when I turn on the video.

The belts are weak and are skipping and also tired. Your VCR needs the belts to be replaced.Only some VCR types this problem does occur with.

Your helmet is now destroyed and should never be worn for protective purposes. get a ballpien hammer and smash it through the helmet to make sure no one ever uses it.

Quit moving your helmet! or just get a normal shield or two.

Call Shark cust. service. They should send you a new head

Yes welding arc is a much brighter light and it will work fine for you.

What you described is normal for that helmet.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

check your speaker balance and check that the bass isn't turned all the way down.

From your description it appears you may have dirty heads. Either try a video head cleaner tape or better still , remove the casing & using either a proper head cleaning tool & an appropriate head cleaner fluid (isopropal alcohol) very gently wipe the heads, Do Not put too much pressure or rub too hard as this will damage the heads. If this does not cure the problem then new heads will be required.
Your VR 354 is possibly the whole of the tape path needing cleaned especially the pinch roller (black round roller on the right hand side) this might be worn & again needing replaced

"Getting the right fit is the most important factor to consider when buying a Snowboarding Helmet: 1. Measuring Tape. Your helmet size is determined by the circumference of your head. Wrap a measuring tape around your head to get your helmet size. 2. Align the front of the helmet above your eyebrows and hold both straps until the helmet fits well. 3. Make sure there are no unwanted gaps between the helmet lining and your head. The back of the helmet should not touch the back of your neck. 4. The helmet should fit snug and nicely. 5. Try one of your favorite pairs of Snowboard Goggles and make sure they fit properly on your helmet. Please note that the producers of helmets all have different ideas on the shape of a human head. Although the size might be right, the shape of the helmet might be different from the shape of your head."

My Kenwood VR-507 had been working great. I hadn't changed anything. I hadn't even moved it. It just suddenly stopped producing sound. It didn't just stop while it was on. I had turned it off and when I turned it back on, nothing. I tried running the speaker setup to see if it would output pink noise, I could hear the test sound, but I couldn't hear any audio from the TV or DVD player..

Help. :-(