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How did I do? (EICO 625 Vacuum Tube Tester)
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Author:  booangler [ 30 Oct 2008, 19:34 ]
Post subject:  Re: How did I do? (EICO 625 Vacuum Tube Tester)

gmilitano wrote:
I'm gonna pull mine out to double check.

Are the heaters going on the tubes?

Gio,

I thought of that, hey do for the 6EU7 but doesn't appear to on the 6BQ5. I noticed that the filaments are different pins for the two tubes.

I'll take any help I can get.

Thanks

Alan

Author:  Gio [ 30 Oct 2008, 20:56 ]
Post subject:  Re: How did I do?

booangler wrote:
What setting do you show for the 6BQ5? I have the following settings listed:

Shunt 15
Fil 6.3
Sel 3
Up [1,2] [6,9] [7,8]
Down 3,4

That is odd, on mine for 6BQ5 is says

Shunt 19
Fil 6.3
Sel 3
Up 1,2,7,9
Down 3,4

Did you misread the chart or is that what yours shows?

Author:  booangler [ 30 Oct 2008, 22:39 ]
Post subject:  Re: How did I do?

Gio,

I will try your settings tomorrow and let you know.

Alan

Author:  booangler [ 31 Oct 2008, 05:38 ]
Post subject:  Re: How did I do? (EICO 625 Vacuum Tube Tester)

Gio,

New settings, same results!

Alan

Author:  Gio [ 31 Oct 2008, 06:55 ]
Post subject:  Re: How did I do? (EICO 625 Vacuum Tube Tester)

Ok, when you are testing, do you see the tube heaters come up? You should.

Author:  booangler [ 31 Oct 2008, 07:02 ]
Post subject:  Re: How did I do? (EICO 625 Vacuum Tube Tester)

gmilitano wrote:
Ok, when you are testing, do you see the tube heaters come up? You should.

Gio,

I see it with the other tubes but not with the 6BQ5. I even waited 15 seconds for the heaters to fully heat the tube.

Alan

Author:  Gio [ 31 Oct 2008, 07:25 ]
Post subject:  Re: How did I do? (EICO 625 Vacuum Tube Tester)

Ok, get a DMM and check to see if there is any resistance or continuity across the heater pins 4,5 on the 6BQ5. It should be a little over 1 ohm.

Author:  booangler [ 31 Oct 2008, 08:39 ]
Post subject:  Re: How did I do? (EICO 625 Vacuum Tube Tester)

Gio, Did I mention that I have tried multiple 2 different tubes?

I did test the resistance, reads about 1.8.

Author:  Gio [ 31 Oct 2008, 12:26 ]
Post subject:  Re: How did I do? (EICO 625 Vacuum Tube Tester)

Hi Alan, ok, it does not seem that the heaters on the tubes are burnt out.

It could be there is no voltage there or that the socket is not making good contact with the tubes.

Can you safely measure the voltage on the tube tester socket heater pins to see if you have about 6.3VAC?

Also, how is it that your settings were not the same as mine? Did you misread the roll chart on the tester or are those these settings that are shown on your roll chart for 6BQ5?

Cheers

Author:  booangler [ 01 Nov 2008, 05:44 ]
Post subject:  Re: How did I do? (EICO 625 Vacuum Tube Tester)

gmilitano wrote:
Hi Alan, It could be there is no voltage there or that the socket is not making good contact with the tubes.

Can you safely measure the voltage on the tube tester socket heater pins to see if you have about 6.3VAC?

Also, how is it that your settings were not the same as mine? Did you misread the roll chart on the tester or are those these settings that are shown on your roll chart for 6BQ5?

Cheers

Morning Gio,
I will measure for voltage at the heater pins, may not get to it until Monday (we have a very busy weekend).

As for the settings, what I wrote down came directly off of the roll chart. If I can get a clear picture I will include it on the next post.

Regards

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