[Boatanchors] replacing oil filled capacitor in Viking II ?

[howard holden]

Hello Brian,

No experience with the Viking II, but I have a regulated 350VDC supply that I use in a GO-9. That supply had an oil filled cap in the HV side which leaked. Replaced it with an equivalent value electrolytic, no issues and it’s been playing for about 5 years now, very often and sometimes for days at a time. I’d say go for it, just be careful with the oil filled in case it is PCBs.  And no problem using the Viking II on CW – it’s my only mode!

73, Howie WB2AWQ Reno NV

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From: brianpepperdine brianpepperdine<mailto:brianpepperdine at sympatico.ca>
Sent: Sunday, December 13, 2020 12:00 PM
To: Boatanchor group<mailto:boatanchors at mailman.qth.net>
Subject: [Boatanchors] replacing oil filled capacitor in Viking II ?

Hi.
I recently picked up a Johnson Viking II. Owner is SK.
Looking inside it is pretty good top and bottom of chassis. No charred marking
etc FWIW.

The only thing of consequence at first view is the oil filled capacitor.. 8 Mfd
100 vdc. This does show a little of what I think is seepage around the two
terminals and bit around the seal of the can at the top. Not migrated anywhere
else, not onto the chassis below nor down the can. Just a thin brown line.

Most of what I can see on the internet re. cap replacement in the Viking II is
re. the paper caps and electrolytics, which is straight-forward, but they say
the oil filled is generally OK and are left alone (no one seems to mention
possibility of PCB?). Anyhow, if the oil filled cap should go as a caution re.
what is seems visibly (I have not tested it re. capacitance nor resistance)
 what can I replace it with that is modern at 8 mfd and 1000 VDC? I see no
reference to that generally re. the Viking II nor electronics in general?
Any ideas how to proceed or advisability etc
Hope to get this on the air by early 2021 if I can.. just need to order the
right stuff for it. Otherwise looks good and hope transformers etc. fall into
place A-OK of course etc. As do we all with our BAs coming in!! Sacrilege of
sacrileges I will only use it on CW, not AM phone...

73
Brian VE3VAW
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