Mystery bits

[17thLevelWizard]

So these little black plastic pieces fell out of the back of my Dual Rectifier Solo head... Anyone have an idea what they are? The amp seems to be fine.

https://steve-devaney.squarespace.com/music

 

[JCDenton6]

Those are the inserts on the bottom of the power tubes that broke off.

Make a note of pin alignment or take a picture of the back of the amp so that you make sure the tubes are inserted correctly in the future.

 

[domct203]

Those are the inserts on the bottom of the power tubes that broke off.

Make a note of pin alignment or take a picture of the back of the amp so that you make sure the tubes are inserted correctly in the future.

+1

Those are the alignment pins from your 6L6GC and/or 5U4GB tubes.

As mentioned, you better make note of the proper orientation of those tubes. If you were to mis-index (rotate the pin location) the tubes you could end up with an epic failure and/or fire.

The next question is "how did they get broken?"

Change any tubes lately?

Dom

 

[17thLevelWizard]

Thanks gentlemen, that explains it. Yes, I was considering taking out the EL34s and putting the original 6L6GCs back in, but got wet feet and just put the EL34s back in instead. I just checked and I have two tubes missing their alignment pins (one EL34 and one 5U4GB).

Now I'm not sure if I put the tubes back in correctly. I'm a neophyte.

 

[17thLevelWizard]

Got it sorted. Thanks again.