Question about Science & Laboratory

2 Answers

Nikon Optiphot-2 Does anyone know where I could get a repair schematic for a Nikon Optiphot-2 microscope? Or maybe, better yet someone has dealt with one of these when the projector lamp won't light. The lamp is a quartz 100W 12V bulb. The bulb appears good, also the main fuse in the bottom of the unit. It appears that the 12 volts comes from a built-in 12 volt dc supply. I looked over the circuit board and found nothing obvious. Sure could use a schematic diagram...

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 questions.

  • Contributor
  • 45 Answers

You should start by changing the bulb, even though it looks ok chances are that it's no longer working. Do the same with the fuse if the new bulb doesn't work.

Test that power is reaching the socket with a voltmeter or a multimeter so ensure the wiring is ok with the new fuse. If no power is reaching the bulb socket, then you will need to check the wiring every step of the way.

Posted on Apr 28, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

You can purchase a variable power supply that will light this lamp and control its intensity if you determine that the power supply in the microscope is bad. This may be the easiest way to fix the problem. Parts for many older microscopes are no longer available and this is a common way to repair the microscope. It's also a common modification made to many laboratory instruments for research purposes. Carefully check the lampsocket as well. It's common for them to fail and replacement is the only cure. The lamp socket is not expensive.

Posted on May 22, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have nikon microscope alphaphot2, YS2-H and I need complete PCB for power of lamp 6V 20W ! Please, informe me where can I order this board! My mail is:

try to find on ebay or on the manufacter support or with technicians who work repairing micorcopes.
this micro. is already considered obsolet \ not in production. i have one. so if it's yours and you know about engineering\electronics it would be better\easier fix it yourself making a new board or adapting other lamp.
i guess that my one the bulb is burn from i remenber and i'm thinking in adapt a led lamp. so add me in facebook that if i change my board i tell u how i do or maybe i could my original board if it's working

Mar 26, 2013 | Nikon Science & Laboratory

1 Answer

Pinion gear for raising & lowering condenser tray is broken need part #

In the Optiphot there are two small grub screws under the left hand side of the condenser column. Once loosened the metal housing of the pinion can by pulled or pushed out and the new one inserted. You may need a small mirror to see the screws due to their hidden position. You can then replace the pinion in which the black nylon gear will have broken

Jan 15, 2013 | Nikon Microscope Alphaphot-2 Ys2-t 4...

1 Answer

I need a manual for a nikon ys2-t microscope

this is the manual , the model is alphaphot 2 look at the picture in the page 4 . i have this same microscope and it have a label with ys2-t writed .

Jan 20, 2012 | Nikon Science & Laboratory

1 Answer

Remove collector and open base of Nikon Labophot

send an image of your microscope so that I maybe could help you,my email address

Feb 18, 2010 | Nikon Science & Laboratory

1 Answer

Nikon Optiphot stage is falling

This might be sign of trouble, because the Nylon gears inside might be worn out. I did not noticed a tension ring on Optiphot 1 or 2. The Nikon S and Metaphot from 1960s to 1976 have Nylon gears with tension ring adjustments.

Nov 25, 2008 | Nikon 7314 Binocular Microscope

1 Answer

Nikon Optiphot-2 microscope: tube length?

The Nikon Optiphot 2 tube length is 160 mm DIN finite. It is a 1990 vintage microscope. Any objective lens with the standard RMS thread, -160 engraved on it will work. It will not work with other brnads with the infinity symbol engraved on it or infinity tube length Nikon 200 mm, CFI60 objectives for 2000 vintage to present microscopes. - Lawsen Lew

Oct 22, 2008 | Nikon 7314 Binocular Microscope

Not finding what you are looking for?
Science & Laboratory Logo

Related Topics:

1,088 people viewed this question

Ask a Question

Usually answered in minutes!

Top Science & Laboratory Experts

Gareth Cockram
Gareth Cockram

Level 3 Expert

661 Answers

William McMath

Level 2 Expert

178 Answers

ray gallant

Level 3 Expert

49253 Answers

Are you a Science and Laboratory Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides