Hai alc problem

[dukester999]

Made a bad mistake today while changing out a alc switch on a hai omni lt system. While changing out the switch hot I acidently touched the low voltage signail wires with 110 volt power. Made a spark like it went to ground. Alc switches in my house still work manually . But unable to be controlled from keypad or PC access. Everything else seems fine except for the alc end. Is there a fuse or diode I may have blown? Is there a reset button? Should I just start with one switch hooked up and see what happens? Think I might have blown up all the switches? Any direction on this would help a lot. Thanks.


Hope someone can help me. Just looking for the first place to check.

 

[jlehnert]

Probably blew the communications chips on the ALC board at the Omni.  Take a look at the board, and if you see scorch marks around one of the parts, that's probably your problem.