Question about Cst /Berger 57 LM30 Manual Leveling Dual Beam Rotary Laser Level With Case

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CST/Berger LM30 - Push power button, laser comes on and shaft spins but goes off as soon as power button is released. Batteries have been replaced.

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Posted on Jan 02, 2017

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SOURCE: cst berger LM30 tried 2

Hello Virginia. Go to the auto parts store and get an aerosol can of electrical contact cleaner. Remove the batteries again and use the contact cleaner and cotton swabs to thoroughly clean the contacts and the corrosion. Once it is very clean, return the new batteries being sure that you have paid strick attention to the polarity of each battery. Test it out again.

If it is still not functioning, you can take it apart and trace each wire looking for corrosion. Continue to use the electrical contact cleaner to remove any corrosion and insure that the bulbs are all seated properly. J.

Posted on Oct 20, 2010

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1 Answer

Pilot goes off as soon as I release the button


You need to hold the button down for about 3 mins. If it goes out after that long the thermocouple is probably bad. Look at how long the wire is from the pilot light to the gas valve. They come in different lengths.

Jan 18, 2016 | World Marketing Kozy-World 3 Plaque...

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Which instruments does the the CST/berger DTEP diagonal eyepiece work with?


according to http://www.engineersupply.com The CST/berger DTEP diagonal eyepiece works with the following instruments:

  • CST/berger DGT-02 theodolite (56-DGT2)
  • CST/berger DGT-10 theodolite (56-DGT10)
  • David White DWT-10 theodolite (46-8890)

Apr 17, 2013 | Retail Supplies

1 Answer

I have a CST/berger Magna-Trak 202 magnetic locator that just stopped working.


Likely the on/off button is no longer at the right position to make contact with the tab. Take it apart, and you may need to glue a little piece of plastic to the button.

Feb 01, 2013 | Bosch CST Berger MagnaTrak 200 Series...

1 Answer

Lasermart LM30 wont spin and all lights blinking


My LM30 worked OK for a while, then the zig-zag chalk line feature stopped working, and finally it would not spin for more than a second for either rotate setting, and got the flashing lights thing. Of course tried replacing batteries to no avail. So the meticulous experimenter in me started on a mission to find out why it stopped working.

If my findings are the only reason this unit gives this error, the company should be ashamed of itself charging so much for such a simple repair.

Check these two things if you get the no spin/flashing lights problem.

Test one: Gently holding the rotating head, lift up a bit. If there is a little up/down movement when you lift on it, go to test two.
Test two: Holding the unit upside down, try running through the functions. If all functions work, the repair is easy and inexpensive/free.

The problem is there needs to be no axial shaft slop for the unit to work, and that slop is removed with a thin wave washer under the spinning head. That washer get's weak over time, and I think there is a sensor on the board that makes sure the drive pulley doesn't drop too far down, which triggers the shutdown.

Tools needed:
Phillips screwdriver
Small phillips screwdriver
1.5mm allen key
Retaining ring pliers

The fix:
1) Remove batteries and the screws from the top of the spinning head, and remove the cover.
2) Remove three screws from the bottom of the LM30 holding the yellow case on.
3) Carefully lift off the case. The control board has a slide pin connection to join it to the rest of the internals. It has a slight resistance to being removed, but if you feel a higher resistance, the control board is probably snagging on the drive motor inside. Squeezing the case sides gives you a little more clearance. Take your time getting it off.
4) Remove a 1.5mm allen head jam screw from the prism head, and carefully slide the prism off the shaft (gently prying up with a screwdriver)
5) With retaining ring pliers, remove the retaining ring.
6) Remove the wave washer. You can find a replacement or simply bend the existing one to make it a bit "wavier". Don't go crazy, just bend it slightly more than it is.
7) Support the shaft with a screwdriver inserted under the drive pulley
8) Replace the wave washer on the shaft.
9) Replace the retaining ring
10) Temporarily remove screwdriver to check that there is no up/down slop in shaft. If there is, you need to bend the washer a little more.
11) Reinsert screwdriver for support.
12) Carefully replace prism and reinstall the allen screw
13) Remove screwdriver providing shaft support
14) Carefully replace yellow cover, assuring slide connectors line up on the control board, and replace three screws
15) Replace prism cap and screws.
16) Replace batteries and test functions.

-Rod Reidnauer (meticulous experimenter)

Jan 09, 2012 | Cst /Berger 57 LM30 Manual Leveling Dual...

1 Answer

I need a manual. Power will not come on. Changed batteries. No power. Also, where does the red attachment that tells you to go up or down hook on? I have power to the unit which hooks to the pole.


Hi Richard.
The manual is available from this webpage.

http://www.cstberger.co.uk/uk/en/

Type lm30 into the text box which says "trade name/tool number" and click "start search"
Click on the thumbnail then to download the pdf.
Check for corrosion on the battery terminals and those in the laser.
From what I can see in the manual, there should be a clamp for the laser receiver that lets you clamp it to a staff.
The target plate (part 24 in the manual) has a reflective coating and there should be a magnetic holder for it.

Nov 24, 2011 | Cst /Berger 57 LM30 Manual Leveling Dual...

2 Answers

My laser turns levels tries to spin but wont. I am told its the motor. can l buy a motor ?


Please contact CST/Berger directly for warranty service or parts inquiries about that laser.
Their website is here. If you click on the self-support knowledge base link and type in warranty service you'll be able to access a list of options for repair of your unit.
(If you have a product(s) that needs to be returned for service, please contact the Customer Support department at 800-435-1859 or click on the LIVEPERSON icon right now to obtain a RMA number before shipping the product(s) back.)
I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks!

Jan 06, 2011 | CST/Lasermark Self-Leveling Rotary Laser...

1 Answer

I need the mounting bracket that attaches to the story rod. the model of receiver is rt-a1655


check with bosch or cst/berger. robotoolz is now owned by bosch and they have eliminated most of the robotoolz product line

Jun 17, 2010 | Robotoolz RT-5250-2XPK ePlane XP High...

1 Answer

Green light turns on momentarily, then nothing from unit


make sure batteries are tight in unit ,making good connection there are many internal things that could be wrong no rotation could be bad drive motor broken belt bad pcb robotoolz now owned by bosch who owns cst-berger discontinued robotoolz lasers there is a guy who will give free estimate on repair A.P. Service & supplies 610-944 8030

May 28, 2010 | Robotoolz SelfLeveling Laser Level with...

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