Office Chair Switch Broken

If the switch of an office chair is broken, targeted repair measures can be taken according to different fault manifestations.

If it is button malfunction:

• First, check if there are any foreign objects stuck in the gaps, such as dust, food crumbs, or fine fibers. You can use an old toothbrush to gently brush around the buttons or use the cold air setting of a hairdryer to blow away the debris. Then, use a dry cotton swab dipped in anhydrous alcohol to wipe the contact surface at the bottom of the buttons.
• For wired remote-control buttons, check if the connecting wire is loose. Unplug the connector and plug it back in tightly. For wireless buttons, try replacing the batteries.
• If the metal contacts inside the buttons are oxidized, use your fingernail or a small plastic piece to pry open the button panel. Use fine sandpaper to polish the oxidized layer on the contacts and then put the panel back after cleaning.
• If the silicone pad at the bottom of the buttons is worn and thinned, cut a silicone sheet of the appropriate size and pad it at the bottom.
• If the above methods are ineffective, it may be that the internal switch of the buttons is damaged. It is recommended to contact the manufacturer's after-sales service for handling. Do not forcibly disassemble chairs with gas springs by yourself.

If it is height adjustment failure:

• When the operating handle is misaligned, turn the seat over and check if the end of the control handle can accurately touch the small metal dot (plunger) at the top of the gas spring. If it is misaligned, use a wrench to adjust the position of the fixing screws on the base.
• If the handle cannot touch the plunger when pressed all the way down, you can stick a hard gasket above the plunger to compensate for the gap.
• If the rebound of the plunger is blocked due to excessive accumulation of grease or dust in the base, spray a small amount of WD - 40 or sewing machine oil into the gap of the plunger and press the handle repeatedly several times.
• If the gas spring leaks oil, automatically slides down slowly after sitting, or has cracks on the outer tube, it must be scrapped.

If it is angle adjustment button malfunction:

• Check the microswitch of the adjustment button. If the resistance value exceeds the range of 0 to several ohms, it needs to be replaced.
• Check the drive chain connecting the adjustment button to the control mechanism of the chair body. If it is stretched more than 5% of its original length or has obvious wear, it should be replaced.
• Check the spring in the angle adjustment device. If the deviation of the elastic coefficient exceeds 10%, it needs to be replaced.
• Use a multimeter to test the wire connected to the button. If the resistance is infinite, it indicates an open circuit, and the wire needs to be rewired.
• The clearance between the button cap of the adjustment button and the internal mechanism should be between 0.5 and 1 millimeter. If it is not appropriate, make appropriate adjustments.
• If hydraulic adjustment is used, check the hydraulic oil pressure. It should normally be between 2 and 3 megapascals. If the pressure is insufficient, check for leaks and replenish the oil in a timely manner.
• Check if the metal shell of the adjustment button is deformed. If the deformation exceeds 1 millimeter, you can try to repair or replace it.
• For office chairs with electronic control modules, refer to the product manual to reset the control module.
• Check the gear set associated with the angle adjustment button. If the tooth thickness of the gear is worn more than 0.3 millimeters, replace the damaged gear.
• Apply an appropriate amount of grease, such as molybdenum disulfide grease, to the moving parts of the adjustment button.