Gossen Sixtar PCB repair need wiring diagram

Hello everyone,

I recently acquired a Gossen Sixtar light meter that had severe corrosion on the PCB — the green verdigris had destroyed 3 copper traces on the board.

I cleaned everything with isopropyl alcohol, contact spray, and scraped the solder points mechanically. The galvanometer responds correctly when tested with a multimeter, and the CdS cell also shows variable resistance as expected.

I replaced the 3 broken traces with wires (green, orange, blue), but before soldering permanently I want to confirm the correct connections — especially where the GREEN wire should connect. From the photos it seems to go between the galvanometer and the main battery holder, but I'm not 100% sure.

Does anyone have the service manual or internal wiring diagram for the Gossen Sixtar? Or has anyone done a similar repair and can confirm the circuit topology?

I'm attaching photos of the board before and after cleaning.

Thank you!

Learn Camera Repair website has a "Gossen Sixtar Service Instructions" Factory service instructions on their website, would that be similiar to what your looking for? If anything, you can send em an email asking

Have a look there:
Has nice and clear pics with the original PCB copper tracks.

Note:

• There may be damage on the reverse side as well;
• You might consider replacing the adjustment potentiometers, or at least contact cleaner + some back and forth sweeping.
• Of course you need to re-calibrate against a known good meter. A good occasion to change to silver oxide --SR44 in adapter, since silver oxide in 625 format is unobtainium.