what does photosensor look like old one?

Will look very similar to a new one - electonic components rarely change their apperance with age unless subject to excessive heat - a poorly rated resistor for instance will blacken with the heat unless of sufficient Wattage. Photosensors, however, are unlikey to suffer this syndrome.

Use google - enter "photosensor" and click on Images to see lots of different (mostly new) photosensor pictures.

Peccavi
August 2009

An old photosensor looks very much like and old photosensor, young one. How would we know what type you have? and on what?

bob
August 2009