How to change the brightness on a Varian SpectrAA 55
October 9, 2008 5:55 PM Subscribe
Chemist-Filter: I am an analytical chemist working for a company that specializes in leaching semi-precious metals out of waste material. The display on our Varian AA (atomic absorption) Spectroscope is too dark. Can it be fixed without calling in our repair/maintenance technician? All information is appreciated.
posted by mrw to technology (5 answers total) 2 users marked this as a favorite
Our AA is a Varian SpectrAA 55 (Model # Spectra 55 B) and in summary, the screen has gone dark. We are currently able to see it if we turn off all the lights in the lab, however as you can imagine, this is an inconvenience. I have determined from whatever I can see without taking the machine apart that either the LCD screen slid behind the backlights which are mounted on the sides of the screen, or the overall brightness of the screen was turned down in some manner. Our technician that comes in to fix the SpectrAA is very expensive, costing us approx. 350$ an hour on site, plus a total of 6 hrs of travel time. I am hoping that I will be able to fix the instrument without having to call him in, for obvious reasons. Varian technical support just keeps telling us to call in the technician.
I have looked through all of the menus that i can find on the machine, there is no brightness or contrast setting anywhere on it. I would think that any kind of machine as such would have similar settings. It is an old machine so there might not be, however unlikely this may be. Hopefully someone has seen something similar and can give me some kind of idea on how to change the brightness or contrast of the screen.
Also, if someone has knows how I can procure a copy of the manual without having to purchase one through Varian, it would be greatly appreciated.
Thanks in advance.