Radio Road

RE: Marantz 10 B Optocouplers.

128.48.7.72

In Reply to: RE: Marantz 10 B Optocouplers. posted by tesla on May 05, 2008 at 11:08:22

Hi, tesla:

Have you tested for resistance across the leads in your optocouplers?

It could be that either your pilot lamp (neon type) is out or intermittent, or the actual CdS cell or cells inside have become faulty.

Years ago, the owner of L&M Electronics, located in Daly City, CA, developed a little circuit board as a mod for these LDRs.

I do not know anything at all about his circuit or if he still offers this as a service.

I doubt if he sells the part, however, since I believe it to be proprietary from his design standpoint.

Apparently, opening up the originals and substituting fresh CdS cells and a fresh Ne lamp might do you some good.

That is basically what is in them.

Richard Links
Berkeley, CA

Follow Ups:

RE: Marantz 10 B Optocouplers. - tesla 12:16:09 05/05/08 (10)
- RE: Marantz 10 B Optocouplers. - Marantzguy 12:53:24 05/05/08 (9)
  - I have installed the optocouplers offered by sq38s on my 10B... - crooner 17:45:07 05/05/08 (8)
    - RE: I have installed the optocouplers offered by sq38s on my 10B... - Marantzguy 11:16:08 05/06/08 (1)
      - LOL, you are right! - crooner 15:04:57 05/06/08 (0)
    - Here's a "before" pic with the original optocouplers in place... - crooner 17:49:53 05/05/08 (5)
      - Here's the "after" pic with the eBay optocouplers in place... - crooner 17:51:32 05/05/08 (4)
        
        RE: Here's a pic of what's in the optocoupler - Steve O 20:51:33 05/08/08 (3)
        
        thanks for posting! - crooner 16:39:51 05/09/08 (0)
        
        RE: Here's a pic of what's in the optocoupler - Marantzguy 11:03:38 05/09/08 (1)
        
        Interesting post as usual Rich! - crooner 16:44:33 05/09/08 (0)

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