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Reply to "Lionel #213 Lift Bridge"

shawn posted:

The way that circuit board is payed out. You might be able to solder a dip socket to the board. Then, see if you can find a emu 812 chip. The ratings are a bit higher on the dip chip. Plus, you could replace it.

Yup.  The EMD812 in DIP seems more available than the EMD811 in surface mount.  Might be a challenge finding a place to mount a socket since I get the impression it's pretty tight quarters in the tower control box. 

Separately, I'm not convinced the more "powerful" EMD812 (vs. EMD811) is the issue.  What I find interesting about the 213 design is the controller inputs run right to the EMD811 IC chip.  In looking at the technical description of the part, I believe the part will be damaged if you apply AC accessory or track voltage to a controller input.  It is widely written that the controller uses the same lever switch as other track-side accessories.  So in my way of thinking, a typical user might (in)advertently do so since so most accessories work that way.  Then poof - maybe no magic smoke - but chip is damaged.

Here's an amusing EMD812 seller.  Obviously some kind of translation program.  I'll award a gold star to whomever can figure out what it's meant to say!

EMD812 DIP

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  • EMD812 DIP

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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