New to the forum...I have an old MillerMatic 35S that will not feed the wire. Cr1 is not fully engaging, I have checked all the full wave bridge retifiers and all appear to be OK.. I might have a bad CR52.. but have some other checks to make to be sure that is bad.. I do have 28VAC at CR1, but it will not energize fully...trigger and gun are OK in SPOT mode...CR51 has checked OK...any help would be appreciated.

Thanks
Chet1