Question about Line 6 Spider Iii 75 Guitar Combo Amplifier

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Why does my line 6 make a loud screeching noise when cut on

It worked fine one day, the next it wasn't. It screeches a high pitched uncomfortable noise when i cut the amp on with the guitar jack in the input. When i cut it on without the jack in, it makes a popping noise inside.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

danforddan1
  • 192 Answers

SOURCE: amp turns on but no sound even with diff guitars and cords

Hi Dan
I wish I could just say what to fix, but you can not do this at home. Line 6 is a great amp and worth the time taking it down to the music shop , to be looked at an give you a repair estimate. good luck keep on rocking in the free world. DFD

Posted on Apr 13, 2009

  • 1137 Answers

SOURCE: cable broke off in the input jack

I'm pretty sure t6hat the output jack is a sealed unit(contacts inside soldered to the surface of the circuit board. You may be able to grasp the center shaft of the plug with a thin jawed hemostat or really skinny long nosed pliers and pull it out that way. Make sure the amp is off and unplugged from the wall. If that doesn't work you will either have to get it removed at a shop or disassemble the amp to remove the circuit board and unsolder the jack and replace it or get the broken plug out of the jack once it is unsoldered. I've never had a Line6 apart yet but thats probably the type of jack they used. Thats because it has to be electronically isolated from the chassis. Hope this helps.

Posted on May 15, 2009

paulm10
  • 73 Answers

SOURCE: line 6 spider III 15 watt sound problems

Hi there. Sounds like the power amp IC is shorted. Must replace.
Paul

Posted on Jul 09, 2009

PolyrhythmFX
  • 109 Answers

SOURCE: High pitched squeal when the input jack is used.

Sounds like your master volume is turned up too much. The channel volume will make the squealing go away(caused by high gain and humbuckers). The best thing to do is dial in your favorite presets and change the channel volume to the correct level with the master volume where you usually keep it. I use my Spider Valve at master volume at about noon and the channel volume between nine o'clock and noon. Let me know if this does not solve the problem......

Posted on Aug 27, 2009

Kree8iv
  • 192 Answers

SOURCE: I don't know....

Hi,

As you know, when you plug in your headphones, the amplifier cuts the sound to the external speaker, routing the signal through your headphones instead.

When you accidentally pulled the headphone plug from the jack, it apparently damaged the jack, which has the relay attached that routes the sound to your headphones.

Replace the jack, and everything may be OK. I say may be, because the jack is attached to a circuit board in these line 6 ampllifiers, and if you have damaged the circuit board, you will have to send it to line 6 to be repaired.

The downside is if it is not under warranty, it is an out of pocket expense, and Line 6 will not even give an approximation on how much a fix will cost. I have gone through it with Line 6 in the past, so I am very aware of the procedure. It is also a limited warranty, and they may not cover this particular damage.

However, if you are straight with them and they feel obliging, they may fix it under the warranty, if it is still active on your amp.

I had a spider 2 x 12, which was switching between amp models by itself, and they told me that because it was not under warranty, that I might want to consider NOT sending it to them, and just buying another amp. I didn't like that advice, because they seemed as though they didn't care about retaining my business.

Now, something to consider is taking it to a reputable amp repair shop (preferably one that is Line 6 authorized), and see what they can do. Maybe your clip is just bent, not allowing it to spring back from the contact switch that cuts off the main speaker. It could be a very inexpensive fix, but you need to have a shop actually take a look at it up close and personal.

Good luck. I, for the most part, enjoy Line 6 products, and their excellent distortions. Just remember, their amps tend to have a LOT of problems. You can find sites that list many many dissatisfied Line 6 amp owners. All that electronics (on board effects, soft buttons and switches, etc.,) make them vulnerable.
Now I mainly use my old reliable Marshall 1/2 stack with my Line 6 pod, as well as quite a few other pedals.

You would be amazed by the fact that you can still get pretty good money for a broken line 6 amp, maybe get something with less bells and whistles to break, and go with off-board effects pedals and processors.

Please excuse me for adding my own opinions, I am quite well versed in this type of advice having grown up in a luthier / guitar shop and have been playing for 38 years.

Good luck with everything, and if all goes right, adn it is just bent, it may cost you as little as a few dollars to fix. I'll keep my fingers crossed for you.

Thank you for using FixYa.

Posted on Sep 09, 2009

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