[EICO] Eico 666 help

[Malcolm & Carol Leonard]

Antique Radio Forum(get URL from Google)specializes in answering tube tester
questions.
Malcolm Leonard
----- Original Message ----- 
From: "Percy Mistry" <pfmistry at hotmail.com>
To: <eico at mailman.qth.net>
Sent: Friday, June 25, 2004 3:28 PM
Subject: [EICO] Eico 666 help


> Hi, I just subscribed to this list and posting for the first time.
> I recently got an Eico 666 in non-working condition from someone. All I
know
> from the previous owner is that the meter gets pinned when its powered on.
> So... just wanted to find out more about this tester - how do other users
> like it ? Is it good ? and I had a few questions...
>
> I haven't yet tested anything inside to see what exactly is wrong but just
> wanted to check if anybody has replaced the two electrolytic
> capacitors(10uf), the rectifier and the germanium diode.
>
> Do I need to use the exact same values for the caps, rectifier and diode
> (1N48) ?
> Can I replace the caps with higher values (22,47 or even 100uf) since they
> are in the circuit basically as filter caps ?
> Is it ok to use a 1N34 which is also a germanium diode to replace the 1N48
?
> And can I use almost any regular rectifier to replace the existing 50ma
> recitifier ?
>
> Your inputs will be very helpful and highly appreciated.
> Thanks!
> 73s,
> -Percy KC0GVT.
>
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