94 124 ACC Climate Control Smoke & dead

[Bob Weir]

I strated the car on a 90deg very humid day. Off switch was engaged. I pushed the AC arrow down button, and a puff of white smoke came out of the center vent[s] and now its dead. No response to any direction buttons, fan speed or temp wheel. Fuse ok in main fuse box.

I pulled the control unit. Circuit board looks ok on one side. I released clips on face place, but it won't release completely and circuit board is partially secured in area near face plate. I'd like to release circuit board and inspect components on other side. How do I release circuit board? {8lb sledge & 3' crowbar?}

Could puff of smoke come from another component?

Suggestions appreciated...

Bob