ok im back again with the same set it is a 63 silvertone ctc12 clone. i have a few issues and to this day i cant seem to solve. on the schematic there is a section of the 6bk4 and it has 2 lines coming together with a circle on each end and this is where to check regulator current but it shows a jumper that goes across it so is this jumper always across these 2 lines and then removed to put a meter in between and then put back or is it left separated. because i removed this jumper and now have no control of the hv 30kv is high, not right. the other problem is like on modern tvs there is a screen control on the flyback and if adjusted to high then there is lines across the screen until its lowered and this is what i have on this silvertone it as though the bias is to high but it is counterclockwise all the way down and these lines are each one is red, green, blue, and no mater what i do adjusting, subbing tubes nothing gets rid of them i am thinking there may be a resistor or a shorted cap in the chroma board , i just dont know at this point. i have since replaced the flyback when i discovered the 1v2 was wired wrong and i had focus issues now i dont just the lines. so i dont know if its a bias issue or a color drive issue. hopefully someone can shed some light on this never ending sega with this set. so what ever is going on here still is affecting the hv if that jumper stays in place when not checking reg current then ok but i then have to have the hv at max to get decent hv and if something is being driven to hard will have an affect on the hv and this is what it seems like thats going on here. the 1.5meg resistors are good and the high watt resistors around the drives as well check good.
10-27-2014, 04:08 PM
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