Transfer switch trouble

[Huntindog]

My TT has an ATF wired up with a whole house inverter.
Today it started acting up. No power to anything when on shore power.
Power was fine on inverter.

Trouble shooting found the culprit. There is a small circuit board inside the ATF enclosure. It has a micro switch that can delay the power transfer when set the the "I" position. That is where I had it set to allow our generators some time to get going when hooked up to the shore power cord. No power was getting through to the TT when in that position. When I tried moving the switch to the "on" position, Everything worked perfectly, although without the delay. There is a small green LED on the board that I seem to remember should be lit. It does not light up.

I am thinking that the circuit board must be bad. Unfortunantly I buttoned it up without getting the info off the ATF. It is a real common one though.

My question is, are those circuit boards available? Or do I need a entire new ATF?

[Huntindog]

I found a replacement that is very close to what I have. Might even be the same company.

ATF
As I. said, I buttoned it back up in a working state. I have a big trip coming up, so I need it functional. It is in a difficult position to access. Gonna have to unwire it all to get it out to work on. For the $$$ and difficulty involved, I am leaning towards just replacing the entire unit, when I have more time

[enblethen]

Do you have the model number of the unit?

[ScottG]

Can you just post a pic of the board?
Sometimes failed components can be spotted.
(Retired EE)

[afidel]

The board is probably available somewhere, but even if it's not since the board isn't completely dead it's likely someone with an electronics background can fix it for a lot less than the cost of an ATS.