Ancient_Hacker wrote in message
...
You might consider adding a small DC fan. A 12V fan running off a
diode and capacitor off the (supposed) 6.3VAC heaters will be running
relatively quietly at V.




I'd half considered a fan but there is no obvious place to put it and
without cutting a hole in the steel chassis or the wood cabinet it would
just be circulating the air, unless mounted outside the chassis , directed
over the bottles. Good idea about the heater supply use.

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Diverse Devices, Southampton, England
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