Thread: Tenma 72-6802
View Single Post
Old 17th Nov 2018, 8:00 am   #3
Diabolical Artificer
Dekatron
 
Diabolical Artificer's Avatar
 
Join Date: Jul 2009
Location: Sleaford, Lincs. UK.
Posts: 7,636
Default Re: Tenma 72-6802

Doubted you'd find a schematic, I wrote to Tenma for a meter schematic, heard nowt back. Looks like there is one though.

"probably resistors in the high voltage chain." worth having a look, brightness and intensity on CRT scopes is one of the easiest things to fix.

Looked at an EEVblog video's yesterday of a modern Keysight scope fault, as they say in the best mafia films " Forget about it" An old CRT scope can't tell you the time or the latest Yen to $ exchange rate, but you can at least fix them when they go wrong : )

Andy.
__________________
Curiosity hasn't killed this cat...so far.
Diabolical Artificer is offline