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How did I do? (EICO 625 Vacuum Tube Tester)
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Author:  booangler [ 29 Sep 2008, 20:04 ]
Post subject:  How did I do? (EICO 625 Vacuum Tube Tester)

I just bought this on eBay. What do you think?
Attachment:
EICO-Vacuum-Tube-Tester.jpg

Oh, and I paid just $34.00 shipping is another $14.00 for a grand total of 48.00. Now how to I verify that the thing works properly?

Alan

Author:  Gio [ 29 Sep 2008, 21:51 ]
Post subject:  Re: How did I do?

You did ok. I can't read the model number of that EICO vacuum tube tester. I have an EICO 625 Vacuum Tube Tester. There is a PDF of the manual on that page that should gibe you an idea on how to use it.

The EICO 625 is a tube emission tester. That gives you a basic idea of what condition the tube is in. It will not measure transconductance, so you can't use it to "match" tubes.

Author:  booangler [ 30 Sep 2008, 08:54 ]
Post subject:  Re: How did I do?

Gio,

It is a 625. Do you think I over paid. Recently the same model sold for close to $70.

Alan

Author:  Gio [ 30 Sep 2008, 12:46 ]
Post subject:  Re: How did I do?

I think I paid $75 for mine, but it had just been recapped and calibrated. It also came with a measured tube so I check it against that tube. It is useful for checking tube life but you can't use it to match tubes.

Author:  booangler [ 30 Sep 2008, 15:51 ]
Post subject:  Re: How did I do?

gmilitano wrote:
I think I paid $75 for mine, but it had just been recapped and calibrated. It also came with a measured tube so I check it against that tube. It is useful for checking tube life but you can't use it to match tubes.


How and who could calibrate an item like this? I am ot looking for a specific person in my area, but a direction from which to start a search.

Author:  Gio [ 01 Oct 2008, 12:25 ]
Post subject:  Re: How did I do?

The best way would probably be to find a local electronics repair shop that has a calibrated tester and then get a couple of tubes measured and use those for reference.

Author:  booangler [ 30 Oct 2008, 06:34 ]
Post subject:  Re: How did I do?

I am having an issue that I can not seem to resolve. I can not seem to test my 6BQ5 tubes. The 5U4 and the 6EU7's test just fine. Not sure what is going on here. Any thoughts??

Thanks,

Author:  Gio [ 30 Oct 2008, 12:49 ]
Post subject:  Re: How did I do?

What sort of problem are you having? Did you set the up/down switches properly?

Author:  booangler [ 30 Oct 2008, 13:08 ]
Post subject:  Re: How did I do?

gmilitano wrote:
What sort of problem are you having? Did you set the up/down switches properly?

Gio,

They just wont test!! It is the damnedest thing. Like is said I can test both the 5U4 and the 6EU7's. As soon as I depress the merit switch I get results, except with the 6BQ5's.

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

for the up selectors I only use one set at a time.

Thoughts?

alan

Author:  Gio [ 30 Oct 2008, 19:26 ]
Post subject:  Re: How did I do? (EICO 625 Vacuum Tube Tester)

I'm gonna pull mine out to double check.

Are the heaters going on the tubes?

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