Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

Traces inside tube?
Traces inside tube?
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 12th February 2012, 10:35 PM   #1
rntlee is offline rntlee
diyAudio Member
Join Date: Jan 2012
Default Traces inside tube?

Is this 5y3 bad? What are these traces inside? The getter looks like new.
  Reply With Quote
Old 12th February 2012, 11:00 PM   #2
Tubelab_com is offline Tubelab_com  United States
diyAudio Member
Tubelab_com's Avatar
Join Date: Jul 2005
Location: West Virginia panhandle
It looks like the glass is coated on the inside and not perfectly clear. If this is the case you are seeing scratches created by the mica support spscers as the assembly were stuffed into the glass. Coated glass (usually grey or black) is more common on amplifier tubes, not rectifiers but the scratches are perfectly normal.
Tubelab, it's 5 year mission. To explore strange new tubes, to seek out new circuits and topologies, to boldly go where no tube has gone before......
  Reply With Quote
Old 12th February 2012, 11:39 PM   #3
rntlee is offline rntlee
diyAudio Member
Join Date: Jan 2012
Yes, there does appear to be a coating on the inside, so that makes sense now. Thanks!
  Reply With Quote


Traces inside tube?Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Reference inside wiring of SR tube amp kits siliconray Siliconray Online Electronics Store 14 17th May 2017 05:08 AM
DO-35 diode inside vacuum tube ? pjp Tubes / Valves 11 9th February 2009 03:06 PM
Can this wire be used inside tube amp, H07V-K 1.5mm2? agadis Tubes / Valves 3 22nd January 2008 08:12 PM
Cleaning beverage out of inside tube amp MichaelPublic Tubes / Valves 15 10th October 2007 04:44 PM
Discoloration inside a tube? cocolino Tubes / Valves 4 22nd August 2002 11:12 PM

New To Site? Need Help?

All times are GMT. The time now is 01:58 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio