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.
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