I've seen a few Valve Body failures on the Subaru TR690.

P2763 and P2762 are codes that have come up.

Both of those are solenoids on the valve body.

Subaru doesn't sell just the solenoid so the entire valve body must be replaced.

But you can buy just the solenoid from the manufacturer (Subaru doesn't make the solenoid) and replace it yourself.

Solenoid used in the video is here:

https://amzn.to/2ODxoN3

It should work on many Subaru Transmissions including the TR580 and the TR690.

Please also watch the procedure on removing the valve body detailed else where.

Mr Subaru has a great video on it here:

https://www.youtube.com/watch?v=PuyymrUHYqw