Did you shut it off for a few minutes then try it again. Sometimes the HV shutdown circuit will kick in when this happens, but not actually damage the monitor. A power cycle will sometimes bring it back on. If you were adjusting the B+ at the time, turn it down a bit to see if it will come back on, then get an alligator jumper or something to attach to the test point to keep this from happening again.
Otherwise, check the part you shorted to, as well as diodes, transistors, or chips on that trace to see what failed. And check (carefully) to see what the B+ is with it not working...