Quote:
Originally Posted by bandersen
I picked up a 1077B a couple months ago. It's in great shape except for one problem - no vertical on the internal test pattern CRT - just a horizontal purple line !
I've checked the B+, 13GF7 vertical output tube, vertical transformer and they seem fine. So are the signals on my scope as compared to the service manual. I unsoldered one end of the vertical yoke winding and got about 1,300 ohms. I think that's about right since there are two 560 ohm resistors shown in the schematic in the yoke windings.
Anyone have an idea? This is driving me nuts!
Thanks.
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A shorted electrolytic cap(polar or NP) in the vertical deflection ciruit would be my bet.