Members blckbldng Posted September 4, 2006 Members Share Posted September 4, 2006 So yesterday I plugged in my beloved 5150 and I noticed right away that something was wrong. I got almost no low end left and I have to turn post gain way up to be loud. Usually I have it on 1/3rd I cut presence and treeble completely down, maxxed the bass and resonance but it still sounds wrong please help Link to comment Share on other sites More sharing options...
Members Joshtruction Posted September 4, 2006 Members Share Posted September 4, 2006 check every cable you are using. test the m one by one to make sure they are functioning properly, and make sure they are all plugged all the way in. Try a second guitar also. If none of that fixes it, look into some tubes. Link to comment Share on other sites More sharing options...
Members blckbldng Posted September 4, 2006 Author Members Share Posted September 4, 2006 Ok I just checked cables and guitar. No problem there. Probably time for a retube. Actually it still had all the original tubes. Isnt the 5150 an amp without bias pot ? SO I guess I can just buy some tubes and pop them in ? Link to comment Share on other sites More sharing options...
Members ams2ek Posted September 4, 2006 Members Share Posted September 4, 2006 Do you have anything plugged into the loop? I herd that a dirty effects loop will make that kind of problem. Rick Link to comment Share on other sites More sharing options...
Members SeraphSlaughter Posted September 4, 2006 Members Share Posted September 4, 2006 Originally posted by blckbldng So yesterday I plugged in my beloved 5150 and I noticed right away that something was wrong.I got almost no low end left and I have to turn post gain way up to be loud. Usually I have it on 1/3rdI cut presence and treeble completely down, maxxed the bass and resonance but it still sounds wrongplease help i'm willing to bet bad power tubes. Link to comment Share on other sites More sharing options...
Members blckbldng Posted September 4, 2006 Author Members Share Posted September 4, 2006 Originally posted by ams2ek Do you have anything plugged into the loop? I herd that a dirty effects loop will make that kind of problem.Rick nope, nothing in the loop Link to comment Share on other sites More sharing options...
Members Joshtruction Posted September 4, 2006 Members Share Posted September 4, 2006 Originally posted by blckbldng Ok I just checked cables and guitar. No problem there. Probably time for a retube. Actually it still had all the original tubes. Isnt the 5150 an amp without bias pot ? SO I guess I can just buy some tubes and pop them in ? it's a fixed bias, so you can swap them in and out with no worries Link to comment Share on other sites More sharing options...
Members Giga Posted September 4, 2006 Members Share Posted September 4, 2006 Did you by any chance plug into a cab you've been working on ? Speakers out of phase ? Other than that -> tubes, pre and/or power Giga. Link to comment Share on other sites More sharing options...
Members blckbldng Posted September 4, 2006 Author Members Share Posted September 4, 2006 I tried running it at half power, pulling the 2 outer tubes and then the 2 inner ones. I put also the switch to 4 Ohm instead of 8. It seemed worse with only the outer ones running. So I guess I will change tubes. It had SOVTEK 6L6W XT, I think I will try TAD RT814 6L6WGC-STR and see whats what Link to comment Share on other sites More sharing options...
Members JerryP Posted September 4, 2006 Members Share Posted September 4, 2006 Dirty loop jacks. Plug a cord in and out of the loop jacks a few times and see if it helps. You can also switch the loop off using the footswitch. Jerry Link to comment Share on other sites More sharing options...
Members StratTone Posted September 4, 2006 Members Share Posted September 4, 2006 Originally posted by JerryP Dirty loop jacks. Plug a cord in and out of the loop jacks a few times and see if it helps. You can also switch the loop off using the footswitch. Jerry +100Listen to Jerry!! He bailed me out of this same situation about a year ago. Thanks to his expertese I have helped others with this same situation. Also giving credit where credit is due of course. Thank you again for helping me out with the coutless problems I have had in the past Jerry. You the man!! Don't forget that I have some NOS tubes with your name on them if you ever need them. Link to comment Share on other sites More sharing options...
Members blckbldng Posted September 4, 2006 Author Members Share Posted September 4, 2006 Originally posted by JerryP Dirty loop jacks. Plug a cord in and out of the loop jacks a few times and see if it helps. You can also switch the loop off using the footswitch. Jerry WOW THANKS A LOT !!! IT WORKS NOW Its the best advice I got in the 5 years I joined this forum :eek: :thu: but there must be some real problem with the loop. I tried to clean it but when I unplug the footswitch, the loop is reconnected. Link to comment Share on other sites More sharing options...
Members JerryP Posted September 4, 2006 Members Share Posted September 4, 2006 You can give the loop jacks a quick shot of contact cleaner and plug a cord in a few times to clean them. That usually works. If they're real bad they need to be replaced. You can also plug a short jumper cord in the loop jacks. Jerry Link to comment Share on other sites More sharing options...
Members blckbldng Posted September 4, 2006 Author Members Share Posted September 4, 2006 Originally posted by JerryP You can give the loop jacks a quick shot of contact cleaner and plug a cord in a few times to clean them. That usually works. If they're real bad they need to be replaced. You can also plug a short jumper cord in the loop jacks.Jerry weird, the jumper cord trick does not work, oh well, Ill just keep the footswitch plugged Link to comment Share on other sites More sharing options...
Members Geno_xl Posted August 24, 2012 Members Share Posted August 24, 2012 Dirty loop jacks. Plug a cord in and out of the loop jacks a few times and see if it helps. You can also switch the loop off using the footswitch.Jerry Sorry to resurect an old threat but I just came across this and this saved my amp. I had tried all new tubes and was thinking about taking my amp to the shop. THANK YOU JERRY!!! Link to comment Share on other sites More sharing options...
Members notjonahbutnoah Posted August 24, 2012 Members Share Posted August 24, 2012 Sorry to resurect an old threat but I just came across this and this saved my amp. I had tried all new tubes and was thinking about taking my amp to the shop. THANK YOU JERRY!!! Wow. Someone used the search function and handled a problem all by themselves. Very nice. :citizenkaneslowclap: Link to comment Share on other sites More sharing options...
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