Line 6 Music - Recent Questions, Troubleshooting & Support

unplug it and open it up. there are ribbon tape connections in there that arent very secure. maybe one came loose...

I've also been looking HD500 schematic, but never got it. You can use X3L schematic as a reference and compared. Some sections of the X3L diagram, similar to the HD500. By the way, what is the problem with your HD500? Maybe I can help or share. HD500 X3L

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Make sure the volume and master volume are turned up. Try the amp with a different cabinet and a known good speaker cable. If you get sound, it's your speakers or your speaker cable. If still no sound, you need your amp serviced.

I suspect the power cord or it's connector is fasulty. That wouldbe the easyiest fix.Past that, it would need to go to an authourized Line 6 repairman.

It sounds like the pots need replacing if re-soldering didn't work. i would take it to a Line 6 authorized service center. Line 6

Try doing a reset as explained in this video- http://line6.com/support/page/kb/_/pod/pod-hd300400/video-tutorial-pod-hd300-400-factory-reset-r214

Line 6 has a network of authorized repair centers listed on their site. Due to the complexity of the device and the possibility of needing specialized parts, i suggest t you find the repair center nearest you and have them look into it.

I've had both very good and very bad customer service from Line 6 over the years, Personally, Id take it back to GC and have them explain what you need.That way if it's a case of a defective item, they can replace it on the spot,

If you read down almost to the bottom of this link, you'll find a working link to it. Thread LIne 6 Spider IV 30 Schematic request