On Oct 5, 2005, at 1:53 PM, Kenneth D. Grimm, K4XL wrote:
> R.Measures wrote:
>
>> On Oct 5, 2005, at 11:17 AM, Mike Schatzberg wrote:
>>
>>
>>> Wilson, your point is well taken, it could be you are right and the
>>> final is
>>> at fault. But before investigating such a significant and expensive
>>> problem
>>> as an intermittently open or shorted 8877, I would spend a few
>>> moments and
>>> check the more simple and common possibilities first, and then go
>>> onward
>>> from there.
>>>
>>
>> Agreed. I would first perform the Funderberg gold-sputtering test to
>> see what's what with the grid.
>> http://www.somis.org/Goldmeltballs.html
>>
>>
>>> It is often worth considering Achems Razor, which says that
>>> "All things being equal the simplest answer must be correct." This
>>> doesn't
>>> always seem to work out for electronics. I would hope it is not the
>>> triode........
>>>
>>> 73,
>>>
>>> Mike
>>> WB2AJI
>>>
> My money is still on Aachem. In other words, the relay.
>
> Not everyone has a hi-pot tester. Jose already has a new relay. What
> would Aachem suggest? Buy a hi-pot tester and look for meltballs or
> sub the relay?
Hi-pot testers are easy to make with an old neon sign transformer and a
few parts. Trying to trouble shoot a tube type amplifier without a
DMM, a HV probe, and a high-pot tester wastes time and possibly money.
> 73,
>
> --
>
> Ken K4XL
> k4xl@arrl.net
> *** BoatAnchor Manual Archive ***
> On the web at http://bama.sbc.edu and http://bama.edebris.com
> FTP site info: bama.sbc.edu login: anonymous p/w: youremailadr
>
>
>
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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