Monitor Arm Won't Stay Down With a Light Monitor: Check Minimum Load

Quick Answer: If the arm still rises at its lowest tension setting, your monitor is below the arm's minimum load, so change the arm height or the mount.

• Arm sits on a pole and rises to its top stop: Lower the whole arm on the pole instead. Use Fix A to drop the arm on its pole
• Your arm's maker sells a lighter spring: Fit the lower-range part. Use Fix B to fit a lighter spring
• No lighter spring, and you need free height adjustment: Change to a mount rated for your monitor. Use Fix C to choose a matching mount
• Not sure the tension is at its minimum: Confirm that first. Go to Step 1 to confirm the cause

• Difficulty: Easy to check and to lower the arm on a pole; moderate if the spring or the whole mount must be changed.
• Tools: The hex keys supplied with the arm, and a tape measure.

Jump to:

• Step 1 - Confirm the Monitor Is Too Light for the Arm
• Step 2 - Match the Mount to the Monitor's Weight
• Step 3 - Check the Screen Holds at Working Height
• Common Mistakes
• FAQ

Why a Light Monitor Floats to the Top

A spring-balanced arm's tension screw can only reduce the lift so far. That lowest lift is what sets the arm's minimum supported weight.

If your monitor weighs less than that minimum, the spring still pushes harder than the monitor pulls down, even with the screw at its end stop. The arm climbs until it hits its top stop, and no amount of further turning changes that.

So the fix is not a tighter setting. It is either a different way to set the height, or a spring or mount whose range includes your monitor.

Problem state: The tension is at its lowest, yet the spring's push still exceeds the monitor's weight, so the screen rises to the top of the arm's travel.

Corrected state: The screen sits at your working height, either because the mount's range now includes the monitor's weight or because the height is set by a fixed position instead of the spring.

Critical Safety Warning: An arm that already overpowers a light monitor springs up even harder when that monitor comes off. It can strike your face or hands, and an arm loosened on its pole can slide down suddenly.

This happens when the monitor is detached from a tensioned arm, or when a pole collar is loosened without holding the arm.

• Before removing the monitor, put the arm in the removal position its instructions specify; many arms call for the highest position. Do not pull an empty arm down by hand.
• Support the arm from below before loosening any pole collar or height clamp.
• Do not tape, glue, or tie loose weights to the monitor or arm to hold it down, and do not open, heat, or cut the gas spring.

Step 1 - Confirm the Monitor Is Too Light for the Arm

Keep the monitor attached for these checks. You only need to confirm two things: that the tension is truly at its lowest, and that the monitor's weight is below the arm's range.

1. Confirm the tension stop: With one hand on the monitor, turn the tension screw toward − or "less" until it stops turning easily. Don't force it past the stop.
2. Release test: Lower the monitor to your working height, let go gently, and watch for a minute.
3. Compare the weights: Find the monitor's weight without its stand on its spec sheet. Add anything mounted on it, such as a webcam or light bar. Then find the arm's minimum weight on its label, box, or product page.

What you found decides the next step:

• It stays down once the tension is at the stop: The tension was simply set too high, and you are done. Use the slower tuning method of the "monitor arm shoots up when you let go" problem if it now sinks slightly.
• It still rises, and the monitor is below the arm's minimum: This article applies. If your arm is on a pole with a movable collar, start with Fix A; otherwise see Fix B and Fix C.
• It still rises, but the monitor is inside the arm's range: The adjuster may not be working. Check whether turning the screw changes the lift at all; if it doesn't, the adjuster or spring has likely failed and the arm needs the maker's replacement part or a new arm.
• The arm sinks instead of rising: That is the opposite problem. See Why Does My Monitor Arm Keep Falling Down?

If the spec sheet lists only the weight with the stand, it overstates what the arm carries. Look for a "without stand" figure, or weigh the monitor on a scale whenever it is next off the arm.

Step 2 - Match the Mount to the Monitor's Weight

Fix A and Fix B depend on your arm's model. Find the model name on the label under the arm or on the clamp base, then check the maker's support page for the assembly guide and any listed replacement springs.

The guide tells you whether the arm can be repositioned on its pole and whether a lower-range spring exists for it. If you can't find either answer, go to Fix C.

Fix A - Lower the Whole Arm on Its Pole

Use when: The arm mounts on a vertical pole with a height collar or clamp, and it rests steadily at its top stop.

Before you start: Hold the arm from below before loosening the collar, because the whole arm and monitor can slide down the pole at once. See why a loosened collar is risky.

You need: Your target screen height and the hex key for the collar. A helper makes this easier with a larger monitor.

This method accepts that the arm lives at its top stop and moves the whole arm lower instead. You keep forward, back, and side movement, but lose quick height changes.

1. Let the arm rise to its top stop: Note how far the screen's top edge sits above your target height. That difference is how far the arm must come down the pole.
2. Support and loosen: Hold the arm under its base joint and loosen the collar just enough to slide it.
3. Slide down by that amount: Lower the arm along the pole, keeping it level.
4. Tighten the collar fully: Tighten it as the guide directs before letting go of the arm.
5. Confirm the pole can go that low: If the collar reaches the bottom of the pole first, the remaining gap can't be closed this way.

Check: With the arm resting at its top stop, the screen sits at your working height and the collar doesn't move when you push the screen. Go to Step 3 to verify it. If the pole runs out of length, use Fix B or Fix C.

Fix B - Fit the Maker's Lower-Range Spring

Use when: The arm's maker lists a lighter spring or light-load version for your exact arm model, and its range includes your monitor's weight.

Before you start: A spring swap means taking the monitor off a tensioned arm and working near stored spring energy, so follow only the maker's replacement procedure. Read how to unload the arm first.

You need: The part number listed for your model, its stated weight range, and the maker's replacement instructions.

1. Match the part: Confirm the part is listed for your arm model and that your monitor's total weight falls inside its range.
2. Remove the monitor: Take it off with the arm in its specified removal position.
3. Swap the spring: Follow the maker's procedure step by step. If the procedure asks for steps you can't do safely, stop and use the maker's service instead.
4. Remount and tune: Reattach the monitor and adjust the tension until it holds at your working height.

Check: The monitor floats and stays at any height you set. Go to Step 3 to confirm it. If no matching part exists for your model, use Fix C.

Fix C - Change to a Mount Rated for Your Monitor

Use when: Fix A and Fix B don't fit your setup, or you need free height adjustment.

Before you start: The old arm will spring up when the light monitor comes off, so keep your head out of its path and leave the empty arm at its top. Read about removing a monitor from a tensioned arm.

You need: The monitor's total weight, its VESA mounting pattern from the spec sheet (for example 75 x 75 or 100 x 100), and your desktop thickness at the mounting spot.

Choose a replacement against these criteria:

• Weight range: Your monitor's total weight sits inside the stated range, not at its very bottom edge.
• VESA pattern: The mount lists your monitor's exact pattern.
• Desk fit: The clamp or grommet range covers your desktop thickness.
• Mount type: A spring arm with a lower range keeps free height changes. A non-spring mount, such as a pole mount with a fixed height collar, holds a light monitor without any minimum weight.

1. Remove the monitor: Detach it with the old arm in its removal position.
2. Weigh it now: While it is off, weigh it to confirm the figure you used.
3. Install the new mount: Follow its own instructions for the clamp and VESA plate.
4. Set the height: Tune the tension, or set the collar, to your working height.

Check: The monitor holds at your working height on the new mount. Go to Step 3 to finish.

Step 3 - Check the Screen Holds at Working Height

Put a strip of painter's tape on the wall or pole level with the top edge of the screen. Sit in your normal position, release the monitor, and wait about a minute.

Then push the screen gently forward, back, and sideways as you would during normal use, and check the tape mark again.

PASS: The top edge stays at the tape mark after release and after normal pushes. Any collar or clamp you tightened hasn't moved, and cables stay slack.

FAIL: The screen climbs above the mark, a collar slips down the pole, or the new mount sinks below the mark.

NEXT ACTION:

• The collar slipped: Support the arm, reseat the collar, and tighten it as its guide directs with Fix A. If it slips again when fully tightened, stop using that collar and replace it.
• It still climbs after a spring swap: Recheck that the spring's range really includes your monitor's weight, then lower the tension further.
• The new mount sinks: Raise its tension. If it sinks at full tension, see Why Does My Monitor Arm Keep Falling Down?
• Your height needs keep changing: A fixed-height setup will frustrate you. Move to Fix C and choose a spring arm whose range fits.

Common Mistakes

Mistake: Comparing the arm's range with the monitor's weight including its stand or packaging.

What happens: The monitor looks like it fits the range, so you keep adjusting an arm that can never balance it.

Instead: Use the weight without the stand, plus anything attached to the monitor.

Mistake: Strapping weights to the back of the monitor to hold it down.

What happens: An improvised weight can come loose and fall, and it adds an unplanned load to the VESA screws.

Instead: Use Fix A, a listed spring, or a mount rated for the monitor.

FAQ

Is it harmful to leave the arm resting at its top stop?

Resting at the stop is part of the arm's designed travel. Fix A relies on that, as long as the arm feels steady there and no joint rattles.

Will a heavier monitor fix it later?

Yes, if the new monitor's weight falls inside the arm's range. Retune the tension for it once it is mounted.

This guide covers spring-balanced desk monitor arms used with monitors lighter than the arm's stated minimum. Spring replacement steps depend on the arm model and should follow its maker's procedure.

Written and edited by Lio Lim

Every guide on The ErgoDesk Lab is reviewed before it goes live so each step leads to a clear next action. Spotted something unclear or wrong? Let us know, or read how these guides are made.