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Thread: I think I broke my SS24

  1. #11
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    Default Re: I think I broke my SS24

    If you get to the point you would like someone to look at it, you are more than welcome to send it me and I will check it out.
    James Family Christmas - 1600 channels of SS Renard channels
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  2. #12
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    Default Re: I think I broke my SS24

    Quote Originally Posted by Wayne J View Post
    Using RS232, did you place a shunt on JP1?
    Yes,
    JP1 is shunted
    JP2 is open
    JP3 is shunted

  3. #13
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    Default Re: I think I broke my SS24

    Quote Originally Posted by Wayne J View Post
    If you get to the point you would like someone to look at it, you are more than welcome to send it me and I will check it out.
    Thank you. I am close but not there yet. I have a couple more things to try first.

    I predict it is something simple that I am overlooking and I will be embarrassed when it is solved.

  4. #14
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    Default Re: I think I broke my SS24

    From the schematic (once again, not my forte), it looks like there should be direct electrical continuity between U5 Pin 1 and U6 pin 5.
    Is that correct?

    I used a (cheap) digital multi-tester on the chip pins and there was no continuity between U5 Pin 1 and U6 pin 5. That appears to be the direct data path from the input port to the PIC, so I think that would explain everything I am seeing.
    I will visually inspect the board and reflow those solder joints and see where that gets me.

  5. #15
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    Default Re: I think I broke my SS24

    Shunt should be on JP2
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  6. #16
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    Default Re: I think I broke my SS24

    Did you re-flash the PICs w/ Renard Firmware? So they are not running the Diagnostic firmware>
    Matt

  7. #17
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    Default Re: I think I broke my SS24

    Quote Originally Posted by Wayne J View Post
    Shunt should be on JP2
    When you say shunted, should the jumper between the pins be installed or left off?
    I am using a USB to RS232 converter and connecting to JDP1.

    The wiki says:

    RS-232 Communication (direct connect to PC)
    JP1 installed
    JP2 not installed

  8. #18
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    Default Re: I think I broke my SS24

    I currently have the diag firmware running but I have gone back and forth several times.
    I don't think data is getting to the PIC, so I am monitoring SD LED which the diag firmware should flash when the board is getting data.

  9. #19
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    Default Re: I think I broke my SS24

    Quote Originally Posted by Jerry-Rigs View Post
    When you say shunted, should the jumper between the pins be installed or left off?
    I am using a USB to RS232 converter and connecting to JDP1.

    The wiki says:

    RS-232 Communication (direct connect to PC)
    JP1 installed
    JP2 not installed
    Yes, what you have there is correct for RS232

    Not sure if you are using it, but here are the instructions for the Diagnostic firmware.
    http://doityourselfchristmas.com/wik...e_Instructions
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  10. #20
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    Default Re: I think I broke my SS24

    I resolved the problem.

    As noted in post 14, there was no continuity between U5 Pin 1 (output from incoming communications) and U6 pin 5 (incoming communication to the PIC) which should be a direct connection.

    I inspected the solder joints and some in the area looked sketchy so I reflowed all joints on U4, U5, and U6. That gave good continuity. When I tested, it all worked.

    Thank you James and others who helped me with this issue.

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