Please post your schematic or link to it.
It is all about current. Your 100 ohm resistor R24, for example, burns because too much current came from SOMEWHERE. My first impression? Open R8 in the power board.
1. Measure resistance between red and black speaker posts. SHorted together? Bad crowbar triac SAC187. Not short, good.
2. Open unit from rear, eight screws ( I think) and the two power assemblies lift up and out to the sides on the slack in their wire harnesses. The four pin connector on each disconnects it from the circuit. By running one at a time, your bulb will tell you which one (not usually both) has a short. Leave the good one unplugged.
3. Next to the four pin connector is your inductor. It is a coil of wire, next to it is R19 5.6 ohm. Measure that resistor right at its leads. If it checks as a SHORT, zero ohms, that is GOOD, means the coil is intact. if the resistor measures 5.6 ohms, then your coil is open, likely cracked loose at one end.
4. I brought the inductor in because it is a handy test point. Look at the two huge filter caps in the power supply. Ground in the center, then each has a screw that is one of the main rails. Now on the module measure resistance between the inductor and each power rail. This finds shorted output transistors.
5. Once any shorted outputs have been found or replaced, ALWAYS check all those 0.33 ohm 10W resistors for opens. R11,13,15,etc. R8 goes open, then R24 becomes a current path. And check small resistors R1,2,3,22.
6. Pull the driver card, does the thing settle down?
A thing about bulbs, they are fine for saving fuses and not blowing things up, but amps are not made to operate on the bulb. It runs the amp on spongy low voltage.
7. Make one channel 100% before even thinking about bridge mode.
8. Does the channel pass signal with NO LOAD? is it clean? Does the waveform change in ANY way if you apply a load?
Emitter Q7 blows? Then it was a current path for a failure upstream, whaddaya know, same one that took R24. Once again I am tied to R8.
R30 simply should never burn up, make sure CR12 is connected to the right place on the driver card.