Studio speakers Mackie CR5BT no sound

Hello Randy

Thanks for your answer. This all I know what you wrote. I’m ham radio operator and I know something about electronic. Problem is I’m in Asia now far from home, and dont have any electronic stuff with me. I found on forum some advice about model CR3 and CR4 , with headphone socket and cut pin 5 in chip TDA7265 … I made this post to find someone who had same problem but with my model CR5BT. My speakers out of guarancy now. That only I can open speakers and cut pin 5 on chip if someone confirm me it , also who did on own speakers.

COMMENT PART 1 - This part of your original post is confusing to me - it's a matter of the wording: "When I put headphones to headphone connector on front panel , normally work in headphones sound , that connection from computer to speakers working good."

Do you mean that when you plug headphones into the headphone port on the front panel of the left-hand Mackie, everything works as expected? Meaning not just sound, but the volume knob on the Mackie works to control the volume?

If so, then I would suggest editing the title of your question to make this clear. Besides that, I guess it would be good news that headphones still worked - in the sense that perhaps there is just a problem with muting of the speakers occurring, as in the case of the CR3 where someone did a rather ugly fix by cutting the mute pin on the chip.

COMMENT PART 2 -

Continuing -

On that same thread about the CR3, someone else mentioned an easier way - just get the headphone jack to work properly again. One of the spring contact points in the jack acts as a switch & if it is connecting when it shouldn't be that would engage the mute. So if if it were me, I wouldn't do surgery on the chip (regardless of whether it's a TDA7265 or some other chip), I'd try & see if I could take apart the speaker enough to get that jack out of its socket & see if it's the problem; if so it could be easily replaced.

If you don't have any tools w/ you, you might not be able to do such work easily - but you could at least try plugging & unplugging a cord into the headphone jack to see if that would free up the contact switch?

At any rate I think whatever you do, without a schematic or anyone else posting on the web about this problem, you're on your own in terms of trying to solve it. But as I would say I would try & fix the jack before I mutilated the chip.