I installed both, turned it on and no relay, protect light was dimly lit
After about 20 seconds idling the amp and the headunit I have hooked up to it both shut off
Turning the amp back on the fan speeds are about a quarter of what they were and no protect light but also no relay from what I heard
I did hear a very subtle click when turning it off but it sounded farther down the amp than the relay
This is what the output shows after turning it back on, sending audio through it did not make a difference, none of the pots did anything, changing headunit volume does nothing
After about 20 seconds idling the amp and the headunit I have hooked up to it both shut off
Turning the amp back on the fan speeds are about a quarter of what they were and no protect light but also no relay from what I heard
I did hear a very subtle click when turning it off but it sounded farther down the amp than the relay
This is what the output shows after turning it back on, sending audio through it did not make a difference, none of the pots did anything, changing headunit volume does nothing
Attachments
Power supply is only outputting 11v as of right now
11v source
I checked DP5 which I believe is just before the relay, had about 11v DC on both sides
Half protect present
11v source
I checked DP5 which I believe is just before the relay, had about 11v DC on both sides
Half protect present
My supply, I'm not sure why, sometimes it will go up to 14v, sometimes it wont go over 11v
When starting up it goes up to about 14v and drops to 11v even with nothing connected
Its an older supply, I'm wondering if the caps in it are bad, I don't really have a good idea on how it works
It’s supposed to go up to 20v
When starting up it goes up to about 14v and drops to 11v even with nothing connected
Its an older supply, I'm wondering if the caps in it are bad, I don't really have a good idea on how it works
It’s supposed to go up to 20v
Is the output of the supply a clean DC voltage or is it noisy?
Is the amp drawing more than the supply can deliver?
Is the amp drawing more than the supply can deliver?
I just checked my supply with my scope and realized one of the lights were creating this on the power output on the supply (photo 1)
With it being unplugged this is the power output on the supply (photo 2) these photos were taken with the same scope settings
I did not realize this in the previous post about you asking if other things are plugged it to the power strip
It’s a 40amp power supply, I’ve seen it output 20a one of the times I hooked it up previously and it was behaving like this (I was powering my other amplifier listening to music, nothing abnormal from what I could tell)
I also have a 10 amp fuse on +12 when testing this amp, almost every time it goes to about 10a on the initial turn on then bumps down to 2-5a
With it being unplugged this is the power output on the supply (photo 2) these photos were taken with the same scope settings
I did not realize this in the previous post about you asking if other things are plugged it to the power strip
It’s a 40amp power supply, I’ve seen it output 20a one of the times I hooked it up previously and it was behaving like this (I was powering my other amplifier listening to music, nothing abnormal from what I could tell)
I also have a 10 amp fuse on +12 when testing this amp, almost every time it goes to about 10a on the initial turn on then bumps down to 2-5a
Attachments
The power supply was behaving like this the last time I had used it with the previous amp
Some time after it went back to normal and just started acting like this again a few days ago
Haven’t tested that amp on the power supply within the past few days since it started acting up again as I have it in my car right now
I’ve tested a few different headunits since though and they all work fine
Some time after it went back to normal and just started acting like this again a few days ago
Haven’t tested that amp on the power supply within the past few days since it started acting up again as I have it in my car right now
I’ve tested a few different headunits since though and they all work fine
Do you think I'm still able to diagnose the amp with the lower supply? Or should I try and troubleshoot my supply first?
If the supply won't supply its rated current (like it did when you first started using it), troubleshoot it (in a different thread) first.
Well the amp on this thread is still having issues, I do have other amps that work fine on this supply though
The lack of consistency in this repair is making the chance of success unlikely.
Is the amp consistently producing rail-rail oscillation on the output transistors regardless whether in half-protect or not?
Is the voltage steady DC on both ends of the protect LED when the amp is in half-protect?
Is the amp consistently producing rail-rail oscillation on the output transistors regardless whether in half-protect or not?
Is the voltage steady DC on both ends of the protect LED when the amp is in half-protect?
No oscillation out of half protect, all it does is flash this (first photo, about 1v peaks) every second or so then goes back to nothing
Rail-rail oscillation starts in half protect
Out of half protect, anode and cathode of protect led shows the first picture, same thing described above
Half protect, anode shows second photo (looks to be about 2v peaks), cathode shows third photo (0v with some noise)
Rail-rail oscillation starts in half protect
Out of half protect, anode and cathode of protect led shows the first picture, same thing described above
Half protect, anode shows second photo (looks to be about 2v peaks), cathode shows third photo (0v with some noise)
