[jotom55]

Used self clean cycle on oven and few days later replaced oven light. Oven functions won't work now. Tried replacing membrane panel and did no good. Clock functions work but no error code comes up. When you push any oven function button the panel goes dark. Do we need to replace the erc circuit board or something else wrong?

[denman]

Here are your parts
Parts for Amana ACS7270AS - AppliancePartsPros.com

See the attachment for the tech sheet

The ERC Control Module (item 22 in section 03 Main Top) would be at the top of the list.

Does "any function" also include the oven light?

There is a possibility that you have a bad connection in either power or Neutral wires going to the ERC.
The bad connection allows enough power/amperage through to run the ERC electronics but drops the voltage when you try to close relays etc on the board.
This would be a long shot but I would unplug the unit and check the wiring to the board.