Quote:
Originally Posted by zombie1210
I pulled the 1L6 and looked at it. It's dark frosted, and there are a couple cracks by the base of it.
|
What do you mean by 'dark frosted'? The inside of the glass will have a coating (the getter) that normally is brown, black or shiny silver on a tube under vacuum, but turns powdery/chalky white if the vacuum has been compromised.
The original batteries are indeed toast. Series 9V batteries and AA or C/D cells are acceptable alternatives. Be careful not to mix up A and B battery terminals...I've blown multiple tube filaments at once more than once (luckily not on a TO) making that mistake.
Another option I've seen is putting ~6 D cells and a switch mode boost supply into a gutted original battery case. Antique radio classified had an article on building one back in ~1993 that I had some success building ~5 years ago...There may also be a pre-built option as I've seen more than a couple floating around at swapmeets.