how to test relay from jbl amplifier?

Hope these are readible

yes, i have seen a similar post that you have helped with, i will post the readings shortly.

Do not pull the transistors out of the board. Chances are there is only one on each side that is actually shorted. You will need to replace all associated with the one that shorted. They all went through the same abuse, the ones that did not fail are more than likely weak and will not hold up. After you locate the shorted one or 2, you can remove them and see if the amp works. Do not play it loud or long, we just need to see if that is the only damage. To check them, one meter lead on the metal case of the transistor, the other lead to the right leg of the transistor. If it reads near a dead short, one of the ones in that bank is shorted. To find the shorted one, move the lead from the right leg to the left leg. Check all of them and notice the readings. One will read lower than the rest. That one is shorted. Remove it and check the ones on the other side. Remove the shorted one there too. Make sure there are no solder bridges on the ones you removed. It really needs to be put back in the heat sink and all transistors clamped down when testing it. Remove all fuses on the amp and place a single 10 amp fuse for testing.

How many 540s are there on each side of the amp?

There are 2 540's on each side of the board and 3 9540's on each side.