Stanley rl 100

Select a location that is relatively level and flat.
The edge of a bench is best so that the level can be placed in the same position when the level is rotated during the calibration process.

To calibrate follow below:

Press and hold Calibrate button for about 4 seconds. The display will now show CAL1.

Press the Calibrate button briefly again and the 1 will flash, a beep will be heard and CAL2 will be displayed.

Rotate the level 180° end to end with the display still facing you whilst the level is now upside down. Place the level in the same location.

Press the Calibrate button briefly one last time. The 2 will flash, a beep will be heard and the display will revert back to normal.

it is not doing what it's supposed to do.

power is not routed properly - replace the board

Hope This Helps

If you have the standard RL-H3C then there are 3 buttons. Starting from the left there is the "height alert" then "manual" then "Power".

Height alert is a function that after the laser levels and spins monitors the position of the laser. If the laser moves more then a tiny amount then the height alert function is tripped, and the laser flashes it's lights and stops spinning (or spins slowly) to let you know the base line position of the laser has changed. Pressing the height alert button twice shuts this mode off.
Manual mode means after the laser is leveled, it completely ignores the level vials. You can turn the laser any way you want to and it will always spin and not cause any errors.
Power is self explanatory.
If it's a RL-H3CS then it has two arrow buttons, that when in manual mode, allot one axis of the laser to be manually adjusted up and down to do a manual slope.

I have one of this model too and have the same problem. It spin and spin but won't level. After a couple of minutes it stops and the power led fast blink.

Hopefully it's the simple answer. The bubble vial may be out. start where the level vial says is level, and move outwards in slow circles to try and find a place the laser thinks is level. if you find a spot, use the 3 adjustment screws on the bottom of the bubble vial to make that your new center.
Otherwise, it's a not good news. A couple things could be gone wrong. The oil bath compensator could have leaked. If you open the laser, and it's oily inside, throw it away.
It could be the peep site could need adjusting, or the laser diode could be blown. If the laser diode is dead, same solution as the compensator leaking. There are no parts available for these anymore, chuck it out.
The peep site isn't a write off, per se. The laser operates by shooting the beam through a oil bath, which compensates for the instrument not being perfectly level, and then through a splitting lens. part of the beam travels up, and through the rotating head. And the rest goes through a peep site, to a light reflecting area of the main circuit board. if the board or peep site is no longer aligned, the laser will never think it's level. The bad news about that, it is a very tricky and time consuming repair, that few technicians know how to do, or if they do know how are most aren't comfortable doing it.
You can try taking the cover off, leveling the instrument, powering it up and trying to move the circuit board until the laser thinks it's level, but i wouldn't waste much time on it.

Sound like the laser diode is failing. It's power is likely just strong enough to get the level position right, then dims as it runs. The unit, no longer seeing the laser, decides it's out of level and stops. Or the oil in the compensator is leaking, and the same process is happening. Unfortunately the replacement part is not economical to replace.

to calibrate you need to have an area 75 to 100 feet in distance. place laser on tripod 20 feet from one end, take measurements on short and long end, then move laser to center of range and take measurements on both ends . the distance between both sets of marks should be within + or - 1/4 inch if not move level screw to move beam to center then center bubble

Hello.I will be glad to help you out.

Choose which of the 3 buttons you wish to use, on the car.

Take the remote transmitter, depress the actuator button, and continue to hold it until advised to release.

Depress the button, on the car, of your choice, and hold it down until advised to release.

Hold the garage door actuator (while holding the actuator button down) above the car's 3 buttons.

Rotate the door transmitter until the red light above the 3 buttons starts to flash slowly.

Stop moving the remote around when the light flashes slow.

Within several seconds, the same light n the car will now flash rapidly.

Release the car's button, release the transmitter button.

Verify that the door now operates..

IT MAY BE SEVERAL THINGS TRY SOME OF THIS ONES ADJUST THE BACKGROUNG USUALLY BLACK LEVEL, MAYBE THE LAMPS ARE OLD AND FADING. TRY THIS TWO ITEMS.