[Heathkit] DX-100 passed away today...

[Ron Youvan]

    Howie WA3MCK wrote:

> Now to the problem...
>
Attempted to get on 40 AM this afternoon and my beloved DX-100 passed away.
> All was normal less than 24 hours ago.
>
> Started to load her on 7.290 MHz as per manual.
> Transmitter output dropped when I attempted to apply drive - took about
> three seconds  - then fuse blew.
>
>  Quickly shut it down.
>
> Checked everything externally - all seemed OK.
>
> Re-fused rig.
>
> AC Power up - no problem.
> Filaments good.
> Applied plate voltage - no problem.
>
> Went Key down and VERY carefully attempted to apply drive -  No output.
>
> shut it down before I blew another fuse.
> Haven't opened the beast up yet.
>
> Anyway- before I do - does anyone have any general suggestions as to
> type of failure from this brief description?
>
> It's going on the bench this weekend - I'll have to hire the local neighbor
> kid to hoist it up on the bench. He moved it for me months ago like it
> weighed 20 lbs.
>
> Thank you
>
> Howie WA3MCK

   Once it blew the fuse, shutting it down id irrelevant.

   Tubes go bad, a physical inspection of all rectifier tubes and both 
RF amplifiers the 6146s and (if present) the 1625 modulator tubes.
If they all look good test by replacement.
-- 
   Ron  KA4INM - Youvan's corollary:
                 Every action results in unwanted side effects.
.