(Topic ID: 231212)

Bsd optos


By johnny77

4 months ago



Topic Stats

  • 22 posts
  • 7 Pinsiders participating
  • Latest reply 4 months ago by johnny77
  • Topic is favorited by 1 Pinsider

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    optoboard-1.jpg
    Screenshot_20181213-181304_Drive (resized).jpg
    20181213_181239 (resized).jpg
    154438522320810566317841044163 (resized).jpg
    15443842614216153876519308643867 (resized).jpg

    #1 4 months ago

    Well turn my bsd on today and coils started firing then they stopped. So i started a game and opto sw that control coil wont kick out ball. Ive checked fuses and wire conection. I did notice board under playfield that opto plug into has no red led to show power. J118 sends power to board but not sure what sends power to j118 section of board. Thanks.

    #2 4 months ago

    12v fuse may have blown. Did you recently add anything to the 12v line like a color dmd or other mods?

    #3 4 months ago
    Quoted from WeirPinball:

    12v fuse may have blown. Did you recently add anything to the 12v line like a color dmd or other mods?

    Isn't colordmd 5v?

    #4 4 months ago

    No added nothing. Just. Turned it on and acting weird. What fuse is that?

    #5 4 months ago

    Check fuses first, if nothing is blown then check your 10 opto board that’s under your playfield

    #6 4 months ago

    Ok all fuses check out. The red led light is not on the 10 opto board

    #7 4 months ago

    I pulled 10 opto board and it smelled burnt. This is what it looks like.

    15443842614216153876519308643867 (resized).jpg
    #8 4 months ago

    You’d have to look at the traces on the back but looks like that cap could have went. Certainly looks like it got hot

    #9 4 months ago

    I had the same problem with mine years ago, I needed up going with a new homepin board, but mine was burned up pretty bad

    #10 4 months ago

    I was going to post check for puking caps on the opto boards... so make that 3rd as that is what happened to mine.

    The electrolyte looks like it may have just opened up the 12v trace by rotting it out. 12v comes in the connector on right. Goes through the top diode and then that 100uF cap.

    #11 4 months ago

    So should i just replace cap and clean traces or buy new?

    #12 4 months ago

    Traces under cap seem fine

    154438522320810566317841044163 (resized).jpg
    #13 4 months ago

    depends on your soldering tools and skills and want to screw with it. It doesnt look ruined to me.

    Pull the cap off and top two diodes. Scrape off all the crud (carefully electrolyte is probably nasty stuff). Wash with a solvent (maybe before scraping or in the middle of). Inspect for broken / rotted out copper and patch accordingly.

    I think its just going to be a busted trace around the the cap. sepcially if the LED on the opto board is out and the 12v opto fuse is not blown.

    Oh.... if the cap puked on this opto board I wouldnt trust the caps on any of the other opto boards. specially if they share the same cap brand/value.

    #14 4 months ago

    Ok i will order new cap and clean it up now should i just use same value or differant value cap. Ita a 35v 100ufd.

    #15 4 months ago
    Quoted from johnny77:

    Ok i will order new cap and clean it up now should i just use same value or differant value cap. Ita a 35v 100ufd.

    A higher voltage one is fine but make sure it's 100ufd.

    #16 4 months ago

    Thanks bro's will keep you posted when i get it repaired.

    #17 4 months ago
    Quoted from johnny77:

    So should i just replace cap and clean traces or buy new?

    Yea, that looks way better than mine did. Mine lifted all the traces and everything. Ha when mine went the whole undercab was full of smoke, I thought it was gonna start on fire! Good luck!

    #18 4 months ago

    Damn thats crazy. I hope its just the cap.

    #19 4 months ago

    So still waiting on cap to come in, but i was looking a circuit board. Just wondering if on top side is the banded side of D13 supposed to go to pos to c1.

    20181213_181239 (resized).jpgScreenshot_20181213-181304_Drive (resized).jpg
    #20 4 months ago
    Quoted from johnny77:

    banded side of D13 supposed to go to pos to c1.

    Yes, correct.
    Like this:

    optoboard-1.jpg

    #21 4 months ago

    So the heavy green traces connect thats the pos + side of C1 and also on bottom of C1. thank you

    #22 4 months ago

    Good news got my dracula working again. All opto working great. New 100uf cap fixed it. Thanks guys.

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