Science & Laboratory - Recent Questions, Troubleshooting & Support

Make sure the unit is unplugged!!!
I believe it is the lid switch. You can remove the housing and the switch is located adjacent to the latch. Test it with a multi-meter.I do not recommend bypassing the switch except to test it's operation. Serious injury can occur!!!

Eppendorf 5402... | Answered 2 days ago

$25 or $30 if it is in OK condition. maybe $50 if pristine

Tasco Science &... | Answered 2 days ago

It sounds like the backlight of the LCD display is out. The Image is still being displayed there is just no light to illuminate the image. Try shining a flashlight on it (Put the light right against the screen) and see if you can see what's on the screen. The display is fairly easy to install but I do not know where you can purchase one directly.

Zeiss Gdx/vcc... | Answered 2 days ago

Your question is hard to answer without more detail, including movement rate and required magnification. For relatively slow moving objects you can use a movable stage (X-Y stepper motors tied to a computer). Usually the direction of motion is erratic or unknown, and some digital tracking software will have to be written to drive the steppers so as to follow the designated object of interest. This may be something you have to develop yourself, although there may be some "tracking" software commercially available (or adaptable).

Note that you usually cannot take a video of the object as you track it, due to the quantum action of the stepper motors. However, this does not keep you from taking a series of stills (step - capture - step - capture - step ... etc.) and turning them back into a stop-action video. There are a lot of free or cheap programs out there to do that.

If the motion of the object is rapid, then you have a much bigger problem. One project I did some years back had this problem, and we could not actively track the sudden motion with a microscope. What we did instead was to reduce the microscope magnification, and significantly up the resolution of the high-speed camera (and yes, that was very expensive). At 1500 FPS, we could capture the object as it moved rapidly across the stage, then post-process the resulting frames to center on the object. The obvious limit here is that the object needs to cover a relatively small portion of the overall picture - which limits the magnification you can use. Of course, the offsetting advantage of this method is that you pay more for the camera, but don't have to have a movable stage on the scope.

Science &... | Answered on Jun 21, 2017

Could you send user manual of dynatech microplate reader mr700 to me please?

Dynatech... | Answered on Jun 12, 2017

Is it filled with water? If yes, then the liquid level sensor has failed in the unit. This will happen normally, but does happen frequently if you have growth in the water reservoir. Call for service. Follow instruction in the manual about flushing the reservoir.

MTN Gearsmith... | Answered on Jun 02, 2017

As long as you don't damage it, a long time.

Science &... | Answered on May 09, 2017

If you're clever with electronics and can solder, consider an LED replacement. Do you have any data on the voltage, current, or lumen rating of the bulb?

Science &... | Answered on May 06, 2017

Does it do it if the cap is off?

Autometer... | Answered on May 02, 2017

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