tag:blogger.com,1999:blog-8163423095612471504.post4522457753731156047..comments2024-01-08T19:55:32.324-05:00Comments on Forgotten Bookmarks: Possible ShortMichael Popekhttp://www.blogger.com/profile/06083697912791290450noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-8163423095612471504.post-52001007048635917892010-09-18T20:07:01.774-04:002010-09-18T20:07:01.774-04:00A color TV tube schematic. The guy's testing t...A color TV tube schematic. The guy's testing the tubes to see which one (or ones) is bum. I have memories of my mother (in the 60's) going down to Sprouse Reitz 5&10, which had a tube tester, to test the tubes when our TV wasn't working. If she could fix it and not need to call in an expensive repairman ...<br /><br />One of the tubes mentioned: <br />"The 6GU7 is a medium-mu twin triode of the 9-pin miniature type intended for use in the matrixing circuits of color television receivers." [ref: http://www.shinjo.info/frank/sheets/135/6/6GU7.pdf ]Salhttps://www.blogger.com/profile/03597301821068526313noreply@blogger.comtag:blogger.com,1999:blog-8163423095612471504.post-12046819410092080072010-09-11T19:46:25.034-04:002010-09-11T19:46:25.034-04:00Looks like a diagram of an old radio set.Looks like a diagram of an old radio set.Diana Troldahlhttps://www.blogger.com/profile/04995861214213617151noreply@blogger.comtag:blogger.com,1999:blog-8163423095612471504.post-17086220594118551882010-09-09T15:53:40.257-04:002010-09-09T15:53:40.257-04:00It looks like a handyman's repair diagnosis fo...It looks like a handyman's repair diagnosis for a tube-powered TV. The comments in the "newest" ink from 1969 indicate testing/replacing all of the tubes except two ("band still there" may indicate a horizontal electrical disruption in the picture) then replaced the last two with two used (but still testing "barely green") 6GU7s, which resulted in "band gone."<br /><br />I enjoy your blog; I used to be a carpenter and working in older homes had a similar fascination with the discarded/forgotten things I'd find in closets, attics, or even walls.elvisfreakshowhttps://www.blogger.com/profile/07325725876610804009noreply@blogger.comtag:blogger.com,1999:blog-8163423095612471504.post-71964310972148874622010-09-09T15:53:11.191-04:002010-09-09T15:53:11.191-04:00It looks like a handyman's repair diagnosis fo...It looks like a handyman's repair diagnosis for a tube-powered TV. The comments in the "newest" ink from 1969 indicate testing/replacing all of the tubes except two ("band still there" may indicate a horizontal electrical disruption in the picture) then replaced the last two with two used (but still testing "barely green") 6GU7s, which resulted in "band gone."<br /><br />I enjoy your blog; I used to be a carpenter and working in older homes had a similar fascination with the discarded/forgotten things I'd find in closets, attics, or even walls.elvisfreakshowhttps://www.blogger.com/profile/07325725876610804009noreply@blogger.comtag:blogger.com,1999:blog-8163423095612471504.post-3501932365296359252010-09-09T14:22:24.873-04:002010-09-09T14:22:24.873-04:00and of course nubers means numbersand of course nubers means numbersfredricktoohttps://www.blogger.com/profile/00657040535913885759noreply@blogger.comtag:blogger.com,1999:blog-8163423095612471504.post-6417172152628993432010-09-09T13:45:49.518-04:002010-09-09T13:45:49.518-04:00the nubers certainly refer to vacuum tubes which w...the nubers certainly refer to vacuum tubes which were, when I was a kid, quite ubiquitous; being used in all home radios and TV's. Circa 1950'sfredricktoohttps://www.blogger.com/profile/00657040535913885759noreply@blogger.com