Standing pressure of R22 of 200 PSI sounds a little high to lil old me. I'd expect more like 90-100 equalised. Would try rto reclaim some juice and see what happens to prove over charged thoery, before jumping to conclusion of a dead TXV. Could be non condensables too if someone doesn't consider a vacc pump worthy If it is over charged after taking some juice out, reclaim the lot just incase of non condensables, throw in a new liq drier, vacc the lot out way down low and crage her again. This time make sure the ambient is high enough or block some condenser not to over charge her. Head pressure is relative to suction!
Assuming the obvious,the fan is running, and there is no other valve between high side and low side which might be DOA, closed blocked. TXV could then be the only blockage. Those ball valves are open right?