If you can find a tube tester, test it. I find that 6HS6's get shorts more
than most other tubes. They won't show up until you light the filament. My
TV-10-D/U puts line voltage on the pins to check for shorts (to light a neon
bulb), so you wouldn't necessarily see a short with no power to it. Not
sure why I see so many: if it's something in the design or just because many
people when they find these tubes are on the way out try to milk them for as
long as they can because they're so expensive.
Typical eBay prices for them are around $30 but you should be able to find a
local provider who will sell them for $15 each or so. Sometimes I get lucky
and find them in $2/each "assorted tubes" boxes :)
Funny to see a resistor fail shorted. Not typical.
Congrats on your find!
Steve Wedge, W1ES/4
I swear by my life, and my love of it, that I will never live for the sake
of another man, nor ask another man to live for mine.
-Ayn Rand.
All my computers have my signature with various pearls of wisdom appended
thereto.
--------------------------------------------------
From: <rhule...@comcast.net>
Sent: Wednesday, December 21, 2011 8:54 PM
To: <Drakelist@zerobeat.net>
Cc: <Drakelist@zerobeat.net>
Subject: Re: [Drakelist] AC-4R Surprise
Well, my nose detected burnt smell in vicinity of T4. R61, a 150ohm 1/2
resistor in the 250 volt line to V8's plate is burnt to a crisp,
resistance is zero. But why? Resistance to ground on V8 pin 5 is 15k per
spec. But pin 6 screen grid resistance to ground it 15k, vs 90k spec.
Any advice? 73, Curt KB5JO
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