Checking hv

[Yamamaya42]

Originally Posted by timmy

I’m working on this pilot tv with the d5-100 crt it works nice to see a fresh b&w picture but I’m trying to figure out how to get the screen to open up alittle more top and bottom the pot is maxed to open the screen already maybe a cap or resistor in the right place may do it but I’m open to suggestion.

Well, you are putting a CRT in a TV that it was not exactly made for, so there will be some changes to be made, I'm not sure if I am looking at the right schematic, pilot_tv37_sams_62-16, but if it's right, you say that “the pot is maxed to open” (R4) vertical size, if this is the case, then all you need do perhaps is raise the value of R58 to 1.1 or 1.2 meg or so, just see how it goes, or, if by chance, you have the pot at the other extreme, then lower it to 900-800k.