power amp trys to turn on by its self?

[p5200]

I had to replace two op amps on the input board of my power amp after loaning it out and when I got it back it had a few roaches in it.    I replaced the CD4013B chip which is used for the pulse when pushing the power on/off switch and checked all other components on that small board. The amp has a trigger switch on the back for manual, audio signal input turn on, or 12v turn on input. I was wondering if maybe, one of the components on the small trigger board may be causing the amp to try to turn on when in off/standby mode. I was guessing maybe the 4N32 chip might be causing this problem? The amp works fine when turned on otherwise. her is a schematic of the trigger board any advice would be greatly appreciated!