[Boatanchors] Hallicrafters HA-1 (TO Keyer) woes

[David Propper]

yes, there is the possibility that some of the tubes are bad or the that the mercury relay has failed. However, as a starting point, the keyer, if it has never been re-capped, is already more than 50 years old. Most electrolytics are leaking at that age.  The leakage from the ceramic disk caps will drive the keyer into “run on” condition, and of course, as previously mentioned, check all the tubes on a lab quality tube tester, i.e.: Hickok, etc.

Best of luck,
Dave
> On Sep 16, 2017, at 5:50 AM, Rob Atkinson <ranchorobbo at gmail.com> wrote:
> 
> Maybe, maybe not.  Depends on what the keyer is doing.  Remember, it's
> not an analog device.  It's actually a simple vacuum tube computer.
> 
> 73
> Rob
> K5UJ
> 
> On Fri, Sep 15, 2017 at 9:28 PM, David Propper <k2dp at charter.net> wrote:
>> recap the entire unit including all the ceramic disk caps. check the tubes, clean the pots and you should be good to go.
>>