Light Meter Repair: Silicon Cell Replacement

[ic-racer]

This Yashica Atoron uses a simple silicon cell and galvanometer with a match-the-needle dial.

The silicon cell has almost no output and won't make the galvanometer budge.

 

[ic-racer]

I just realized there is already a repair thread on this camera, I'll continue the light meter repair there:

Yashica Atoron (non-Electro) Repair (Minox Type)

The non-Electro Atoron comes apart similar to the Electro version. Remove the threaded inserts at each end of the camera just like the Electro. Then remove the film chamber door release lever and film chamber door. There is a micro ring-nut. I made a special tool to remove it. The nut was also...

www.photrio.com

 

[Hunter_Compton]

Important but pedantic distinction, Silicon is a semiconductor material found in photocells. Silicone is a synthetic rubber.

 

[MattKing]

Important but pedantic distinction, Silicon is a semiconductor material found in photocells. Silicone is a synthetic rubber.

I'm a great supporter of pedantry. If anyone would like something to be corrected by a moderator, feel free to ask!

 

[ic-racer]

Thank you spell checkers, but you missed galvanometer.

 

[MattKing]

Thank you spell checkers, but you missed galvanometer.

Thread title fixed too .
After spending a chunk of my working life carefully proof-reading stuff, it is a burden difficult to shake!
Thanks for an interesting thread.

 

[wiltw]

If you look online at a supplier of silicon photodiodes, you will quickly come to the understanding that the RIGHT one has to match quite a few different parameters as the one which is being replaced! I see 7 different parameters that need to match.

Si photodiodes | Hamamatsu Photonics

Silicon photodiodes with high sensitivity and low dark current, as well as silicon PIN photodiodes suitable for high-speed applications.

www.hamamatsu.com

How does one characterize the existing part?... as simple as matching a visible product code number?

 

[koraks]

I just realized there is already a repair thread on this camera, I'll continue the light meter repair there:

Yashica Atoron (non-Electro) Repair (Minox Type)

The non-Electro Atoron comes apart similar to the Electro version. Remove the threaded inserts at each end of the camera just like the Electro. Then remove the film chamber door release lever and film chamber door. There is a micro ring-nut. I made a special tool to remove it. The nut was also...

www.photrio.com

So let's continue here: https://www.photrio.com/forum/threa...electro-repair-minox-type.204035/post-2846428