Battery for stanley stud finder 77-115 - Stanley 77 115 Intellisensor Plus Stud Sensor

Possible low battery.

Most stud finders have a sensitivity adjustment that should be carefully adjusted per instruction manual before use.
Failure to do this results in erroneous indications.

If you have adjusted exactly per the instructions with the same result the unit is probably faulty.

Try using a magnet instead. Move the magnet back and forth against the wall, slowly... until it sticks to one of the ferrous screws hidden in the sheetrock. These hidden screws are holding the wall board/sheetrock onto a stud.
Magnets! Free stud finder! and no batteries to replace!

The stud finder works by picking up density of the product it is pressed and slid on..Turn your stud finder on make sure the ok light is on...then slightly press it against the wall or surface you are working with,,then slowly moved it right or left still against the surface. As the finder starts to detect more density "thickness" it will. Glow or beep depending what type you have..It will get brighter,louder or what ever it signals are while crossing the stud beneath the surface..keep moving until it stops then move back
again until it stops.....mark or note the position where the signal starts then find the middle...2x4's are 1 1/2 inches across...so center should be 3/4 of an inch...good luck..

Go to http://www.youtube.com/watch?v=QInszVD9WpE&feature=youtu.be - doesn't tell you everything, but better than the manual Stanley ship with the product, which is just a collection of hard to decipher graphics.

Please people dont waste your money but a cheap standard one Stanley 77-730 stud finder is bad does not work at all , miss my old cheapy never failed me

I had this problem as well. The solution was to replace the 9 volt battery that it runs on. The beep was much louder and it calibrated correctly. Apparently the old battery was enough to make the beeping sound but not strong enough to emit the energy required to penetrate the drywall.

Your stud finder keeps beeping because old plaster walls have lath boards behind the plaster that are attached to the studs and running horizontally. Try adjusting the sensitivity of the stud finder by placing it on the wall and turning the sensitivity down until it just stops beeping. Then move it back and forth in a wide enough arc to be sure that you have crossed a stud, turning up the sensitivity ever so slightly until you get a tone when you cross a stud. Hope this works out for you.

replace the battery and if it still doesn't calibrate then junk it

Hi Gene,

• Place the unit flat against the wall.
• Press and hold the button.
• The LED will come on for a second or two then go out.
• Slowly move the unit laterally until the LEDs come on again.
• When they top out, that is the beginning of the stud.
• When they start to go back down, that is the end of the stud.

That's about it..

Best regards
Mike