>
>>Which 1 ohm 10w resistor blew?
>>
>
> It is between the - of the HV and ground. The grid current metering
>taps of the high end.
Thanks. It takes lots of Joules to blow one. I'm guessing that you had
a large surge in grid current.
>
>>>Put new tubes in it, and it came right up working
>>>fine. Could not determine for sure if one of the 3-500Zs had a fil-to-grid
>>>short or not.
>>>
> The first time I was looking right at it, saw nothing.
>
>>
>>What kind of parasitic suppressors are you currently using, Jim? Do you
>>have a dipmeter? Do you have access to a high-pot?
>>Rich---
>>
> I cannot measure the res w/o unsoldering the whols mess (silvered
>bar stock) ......
- One end of these resistor(s) can be quickly unsoldered with a
pencil-point propane torch. Knowing the resistance might provide a clue
as to what to do. OTOH, if you have a free unlimited supply of new
3-500Zs ..............
Please save the grid/fil. 3-500Zs. We can usually straighten a bent
filament helix in our centrifuge.
Rich---
R. L. Measures, 805-386-3734, AG6K
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|