[Test-Equipment] Eico 667 Is there a way to check performance?

[J. Forster]

Maybe just rotating the setup switches from end to end a few times?

-John

==============

> Ray, send it to Mr Tube Tester in Fredrick MD, Mr Bill Waters.
> Ts6550 at yahoo.com
>
>
> -73- Peter K2LRC
> www.k2lrc.com
> In God We Trust !
>
>
> -----Original Message-----
> From: test-equipment-bounces at mailman.qth.net
> [mailto:test-equipment-bounces at mailman.qth.net] On Behalf Of Ray LaRue
> Sent: Sunday, December 12, 2010 5:29 PM
> To: Discussion of Electronic Test Equipment
> Subject: [Test-Equipment] Eico 667 Is there a way to check performance?
>
> I have an Eico 667 that hasn't been used in a number of years.  I brought
> it back up very slowly and it appears the filters are OK.  Power supply
> ripple seems nominal.
>
> However I recently had cause to check a 6AQ5.  It barely moved the "merit"
> needle.  I pulled another
> (used) one and it checked the same.  Altogether I checked 7 or 8 6AQ5's
> (all pulls).  They all barely moved the needle in the same way.   I find
> it hard to beleive they were all that bad.
>
> Other than buying a new 6AQ5, which may not be needed should the tube
> checker be bad, does anyone know of a way to check the performance of the
> 667?
>
> Your attention is appreciated,
> 73,
> Ray, W4BYG
> ______________________________________________________________
> Test-Equipment mailing list
> Home: http://mailman.qth.net/mailman/listinfo/test-equipment
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Test-Equipment at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Test-Equipment mailing list
> Home: http://mailman.qth.net/mailman/listinfo/test-equipment
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Test-Equipment at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>