No sound coming out for my hartke amps?

Contact Hartke directly to inquire.

Thread Hartke GT100 power amp section schematic needed

Try the second link. First one mentioned is busted.

There are too many possible problems for someone to advise you without the amp on the bench. I suggest taking it to an authorized Behringer repair as they will have better access to parts should it be a cracked board.

Sounds like the loudspeaker relay switch is disconnecting the spkr.
i) Check heat sensor on heatsink has good connection to PA board. Dust on h'sink/fan usually needs vacuuming off!
ii) Check voltage on the amplifier output resistor R334 is at 0v (referenced to chassis) - if this voltage is raised,the amp stage is faulty.
Otherwise the fault lies in the speaker protection stage (IC301).

The amplifier takes a bit of time to come to DC balance and same thing happens as power goes down. Some fancier units will have a relay to disable speaker until balance occurs, but this one does not. As long as the cone centers within a couple seconds it will not cause a long term problem.

Easiest way to check is to measure the resistance between the ground pin of your cord and the chasis of the unit. It should be very low. That is the only critical one... Look at a receptacle. See one bllade is wide? That is the neutral. The other one is the HOT side. The HOT SIDE should go to either the fuse or the switch first in your unit. If you have those right the third wire will be right.
When powering up an amp there often is a noise until the amplifiers balance out. Very high quality and high power amps have a relay that disconnects the speaker until balance is reached... but the smaller amps do noot have this feature.

A simple test is to connect internal speakers across an AA battery (for about half a second) & listen for a click as battery is connected & another as battery is disconnected.

If this does not happen, check the internal jack plug connection & its connection to the speakers.

If OK, then you can test each speaker individually using the same battery across each in turn.

If this advice is helpful, I would appreciate a rating.

If you have tested with other speakers, you may have blown the ones that are not working. Test the speaker(s) on another source. I am not sure how you have tested your amp that it "has output"... indicators mean NOTHING on the amps as far as actual power going out.

I'm not sure what this will do, but electrically you can hook these up. Using the line output from the swx, connect it to the line level input. I think that that would be the active input. When you connect a guitar(without a battery powered pickup) to the hartke, it goes to the passive input right? If so, then connect the line out of the swx to the active input. Reverse if the behavior is opposite of what I described.

Realise that with these two connected to each other, you will be using both pre-amp sections and the amp section of the hartke.

Dan