Speakers are cutting out. Checked connections to receiver and they seem good. Wiggled ports on back of receiver and speakers worked, but cut off again as soon as I let go of them.

What model Technics?
Is there a Tape Monitor Switch or Mute switch on the unit ?..IF so , turn them OFF

You Need to Change Wire Connected to Speakers. it's may be damaged internally.

Could be bad connections on the speaker relay. You would have to be able to view the bottom of the board to check for these.

Disconnect all of your speaker leads at the head unit, make sure none are touching, then power it back on. If it still cuts out, check your ground, if it doesn't, re-connect speakers one by one and test power again. It will either cut out when you get to a speaker or wire that's shorted, or work just fine. it's protecting itself from damage by cutting off when speakers are either bad or have shorted wiring. Most common shorted wiring happens on door speakers at the hinge. If it continues to cut off without speakers connected and you have a good ground, the unit needs service. If it still plays and you find the speaker or wire that's causing the problem, disconnect the wire at the speaker and test again, if it works, replace the speaker, if it doesn't, replace the wire. Hope this helps

Did you ever fix this problem? I am having the same issue. I pulled the speakers and checked all the connections which seem fine. Funny thing is that when they do cut out, if I tap the side of the speaker panel that particular side will come back on as if it is a loose connection.

has to do with the ohm either 4 or 8 of the speakers, sometimes if you try to run pairs of speakers out of the same port (2 on the left port and 2 on the right-4 speakers on 2 ports) the speakers will work but when you set them up on an A or B selector and try to run both A & B at the same time one of the speakers will cut out. Check the OHM ratings and if all else fails run them off the same port using only A.

Disconnect all speakers, then test power. if it cuts off, your receiver needs serviced. If it stays on, Check all your speaker wires for shorts and connections at speakers. If they seem ok, re-install one speaker wire at a time and test power. once you find the speaker that's causing the problem, replace the wire and connect a different speaker (that you know works) and test again. If it cuts out, the problem is in the receiver and needs serviced. If it plays, put the original speaker on the new wire and test again, If it cuts out, it's a bad speaker or internal crossover depending on the model. Unless you are very proficient with a meter, this is the easiest way to check your connections. If you still have questions, post a comment and I'll help some more Hope this helps

HI,
Yes you are right man, this problem occurs only with the cable problem, i can explain you, if there is a receiver problem means you won't get the sound its dam sure,
only if there is a cable problem you will get some noise or sound cut off with the speakers, so you please check the cables properly it will be alright.

Normally this denotes a protect condition. Remove the speaker wires from the back of the amp and see if the green light stays on. If this fixes the problem, then there is a short circuit in your wires, speaker level volume control or speakers. The amp sees the short and goes into protect. After a couple seconds it closes the connection again and if the short is still present it goes back into protect.

same problem on right speaker tannoy 8d!!!