Okay guys this "thermotraking" is a little stupid here because the diode in the transistor shunts the CE and cant make 1.5 diodes drop.
However, i tried again this time with 220v 100ohm lamp between output emitters.
it worked and i measured the voltage across the lamp, from there i know the standby current was 10-20 ma.
i removed the lamp and tried, it worked touching the signal cable.
I plugged in the laptop and searched for music.
It failed before i found the music.
now another power transistors are dead
is this oscillation issue ?
from the double bootstrapping that is my idea and never seen it before ?
If it is osc, is 10nF between the bases cure the problem ?