[Amps] Ameritron AL-1500 Problem (Mike Schatzberg)

[R.Measures]

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 at arrl.net
> *** BoatAnchor Manual Archive ***
> On the web at http://bama.sbc.edu and http://bama.edebris.com
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>
>
>

Richard L. Measures, AG6K, 805.386.3734.  www.somis.org