Before I ask, I know the risks involved in opening a high power amplifier. I know sending it to an authorized repair shop is the best (and most expensive, possibly more so than buying a new amp) option. I'd like to fix it myself if possible for several reasons. Now that I have that covered, my amp has been working fine. The other day it was running for a while and suddenly made a furious ticking sound (like a zapping sound). ALL FOUR lights on the front (Power, Fault, Clip 1, and Clip 2) flashed simultaneously with the sound. It lasted for maybe 2 seconds tops. Immediately following, the unit powered off. All four led indicators are off at this point (and have not turned back on at all since). Not enough time for me to turn it off, but I hit the switch a second later or so. I tried the circuit breaker just in case, but figured there's no way that was a breaker. Smelled a burning type of smell after all that too. I tried powering the unit on a couple minutes later: nothing. Tried again w/ speaker disconnected, new power cable and no input xlr: nothing again. Tried a day later just for s...n giggles with speakers plugged in and no input signal. Surprised me when the speaker started trembling a bit and I turned it off immediately. I've done some looking around the web for posts n such. The circuit breaker seems to be fine. Did not pop and when I measure the resistance I got .2 ohms. Seems to me the breakers fine. Same reading past the switch, so that's good. I just tried plugging it and turning it on for a brief second to see if the red leds on board light up and they don't. (figured) after a couple of seconds, I turned it off. Again noticed a burning smell coming from somewhere right around the power supply / transformer area. (pretty sure) Anyway, the speaker terminals seem to be ok on the ohm meter. Channel 1 comes up as about 280 kilo-ohms Channel 1 was the only channel being powered. Amp is being used to power a single subwoofer. Does that mean anything? Seems to me like that shouldn't be a problem, but I'm not sure. Channel 2 doesn't even produce a reading, so I think that's even better. I think I've included all the detail possible at this point. What are the next steps I should take in troubleshooting the components? I'm guessing it's maybe the transformer itself, since I'm pretty sure the amp has a soft start which normally makes a click when it turns on. That is not happening either. Silence, no LEDs are lit up, and last I checked it sends a slight thumping/trembling/low frequency signal to the sub-woofer. (not that I'm gonna try that again hahaha) Thank you in advance for anyone who can help me out with this. I do have a schematic, but I'm pretty sure there are several modifications of this amp with the same exact model number. Thank you everyone!