Siemens OP15 AG

Hello friends. As in the title i have this OP15 panel on a line for more than 15 years,and now a couple of buttons has started to fail due to long activity.I found a replacement for him,and i was able to transfer from the panel and back to the panel with no problems.It asks me level 1 password that i know it is 100.I can change the protocol used for the SS1 if i need but it worked so far.Now my problem is that on the panel i want to change,after i try to put it in transfer mode he resets very quickly.Same story with the level 1 password,but he never stays in transfer mode,he quickly(i mean i barely have time to read it)display this line:
"ANLAUF NACH COM TEXT ABBRUCH",that i understand he say it is restarting.My guess is that maybe i need the supervisor password to enter in transfer mode.I am using the original PG from siemens with Step5 program.
Any help is appreciated.

Ok guys..i solved the situation.It seems like 1 or more of the buttons were pressed and the panel after entering transfer mode would exit it immediately if 1 button is pressed.I had to unplug the button ribbon from the pcb to make it stay in transfer mode.

Glad you got it sorted. Thanks for posting back the solution. ;-)