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Thread: Olsen 595 Output Problems

  1. #11
    Join Date
    Nov 2008
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    Default Re: Olsen 595 Output Problems

    Quote Originally Posted by Ronp View Post
    Nope 595 feeds 2803 then leds then rj45 so if leds work whats next lol
    Would have to disagree with you their. LED,s on this version are powered by 595s then the 2803s after. I have these boards, homemade from plans from here.

  2. #12
    Join Date
    May 2007
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    Default Re: Olsen 595 Output Problems

    Based on the trace files from the wiki and provided by DVC2013, I'll agree with jmksparks.
    Phil

  3. #13
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    Sep 2007
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    Default Re: Olsen 595 Output Problems

    Thanks everybody for your replies. I hope to have a chance tomorrow afternoon to try swapping some chips out. No time during the week because the show starts right after I get home from work and was busy today Christmas shopping.


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    Dave-1200Px-20KLts

  4. #14
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    Sep 2007
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    Iowa
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    Default Re: Olsen 595 Output Problems

    It sounds like there is at least a couple of versions of the board...

    I dug up a post of a 595 with what appears to have the LED's after the ULN's. I believe it may be Macrosill's coop board...

    http://doityourselfchristmas.com/for...564#post122564

    Dave can you post a picture?
    Last edited by Reddy_Kilowatt; 12-04-2016 at 12:06 AM.

  5. #15
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    Sep 2007
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    Default Re: Olsen 595 Output Problems

    So I swapped a "potential" good 2803 chip from another spare board and no change. I guess I should swap another known good chip on the same board. Anyway attached are pictures of the LED's on the Olsen and the tester, what board I have, and the traces showing the 2803 drives the Led's and the outputs.








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    Dave-1200Px-20KLts

  6. #16
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    May 2007
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    Default Re: Olsen 595 Output Problems

    Looks like Ronp was right.

    In any case, I would use a light and a magnifying glass to look inside the Rj45 connectors for the offending channels, checking for bent, corroded or otherwise damaged contacts. That is, if you haven't done this already. Also double-check for cold solder joints on the RJ45 connectors that may have decided to go open this year.
    Phil

  7. #17
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    Sep 2007
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    Default Re: Olsen 595 Output Problems

    Yeah. This board was purchased already built so could definitely be a cold joint or problems with the RJ45 connector.


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    Dave-1200Px-20KLts

  8. #18
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    Sep 2007
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    Default Re: Olsen 595 Output Problems

    So I found the problem. It was the RJ45 connectors. The stupid connectors that were used on this board. They have little fingers that the contacts are supposed to stay in but they get out of line and get stuck below the fingers and then don't spring back up to make contact with the connector. Apparently they didn't come from Mouser. Thanks for all your help.


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    Dave-1200Px-20KLts

  9. #19
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    Default Re: Olsen 595 Output Problems

    I'm glad that you found your problem.
    Phil

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