Reply to "NY MTA R-21 30-2198-1 Pop sound, then smoke!"

Dave45681OGR Forum Member

The pop sound lots of times means an electrolytic capacitor blew, but you should see that as very noticeable if you look at the boards. (the top or bottom of a cylindrical shaped capacitor would be notably bulged and/or totally opened up)

Good luck with your attempts to troubleshoot/fix.

-Dave

5/19/187:15 PM

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