Sorry if my first post was hard to understand - I see the Board Software compressed my Lines from the Tube Chart making them hard to understand.ģ.Josefson, P. Shouldn't a tube with a short test Bad ? Can a Tube with a short correctly test GOOD ? So my question - Is the tester functioning correctly ? because it indicates Short but tube tests good. BUT when I test for Quality - the same tube indicates GOOD. My 12BE6 Tube lights the test light on Switch Number 4 - that supposedly indicates SHORT. You then watch for the test light to come on that indicates SHORT. The manual says to test for short by moving the 12 Switches one at a time from K to P Position EXCEPT the Ones noted as Filament Selector Switches. Thanks Todd - Yes I downloaded the Manual and instructions.įilament Selector Switch Numbers were 1-5-7 Some days its just not worth chewing through the restraints I think I'm using it correctly - Hoping to figure out if all is right with the tester so I have a reason to pick them up when I see them. Any Tips appreciated about Tubes or the Use of my Machine appreciated. I often see old tubes for little or nothing at Sales but had no reason to pick them up. I remember the 5 cent tester machines at the Variety when I was a kid. Its been fun and fascinating cleaning up the tester and figuring it out. Does a Darkened area inside the tube glass always indicate a bad tube or does it just happen because of heat and the Tube can still be good ? If YES - should they be recycled ? Unsure whats inside of them (Mercury etc ) ?ģ. If shorted should they just be discarded ? Some of the Other tubes in the box that I have had time to mess with show the same scenario with short test showing short but tubes testing OK.Ĭan Tubes that indicate a short still test OK ? The Person at the Garage sale said 'never messed with it because I have no idea of how to use it'. I also have no knowledge of weather the tester is supposed to be functioning fine or not. I have no knowledge of weather the tubes were Supposed to be good or not. Per Instructions I do not flip switches 1 5 7 or 5 6 7.īUT Both Settings when Quality checked shows the tubes as Good. The same tube on both settings lights the neon light on short test on 4. Instructions say to test for Short first. In the Tube Chart - there is often more that one entry with different settings for the same number tube - why is that ?Ģ. I downloaded the Manual and Tube Chart but have several things I dont understand.ġ. It was too cheap to pass up for a Gadget Curious Guy. I just bought an EMC 213 Tube Tester and a Box of Tubes at a Garage Sale and found this site. Hello Newbie Here - Not versed much on the world of Tubes.

Emc 215 tube tester manual