Hey all, new to the board and looking for some help with a sick 465.
Initially the -8v feed wasn't working, I had no spot checker/trace. I replaced the diode bridge and IC and presto- I now have a trace. Issue is the trace wouldn't center. I went back to voltage checking and discovered my 15 v was actually reading 14.1 so I went about finding the issue, open resistor. Replaced and now sitting at 15V with a trace far off the screen. If I short the two test points 322 and 324 together the line appears in the center of the display. According to the block flow chart it's an imbalance in the "vertical switching circuit". It does this in both channel 1 and 2. Q322 and 324 are the last transistors connected to the delay line. If I press the trigger button the waveform on line test appears but cannot be moved, don't know if that's the way it's supposed to be. At a base voltage reading of -1.2 and emitter reading of -.2.0V i get 0.700v, the diagram shows it should be zero (0) volts. Is this what it's supposed to be?
Initially the -8v feed wasn't working, I had no spot checker/trace. I replaced the diode bridge and IC and presto- I now have a trace. Issue is the trace wouldn't center. I went back to voltage checking and discovered my 15 v was actually reading 14.1 so I went about finding the issue, open resistor. Replaced and now sitting at 15V with a trace far off the screen. If I short the two test points 322 and 324 together the line appears in the center of the display. According to the block flow chart it's an imbalance in the "vertical switching circuit". It does this in both channel 1 and 2. Q322 and 324 are the last transistors connected to the delay line. If I press the trigger button the waveform on line test appears but cannot be moved, don't know if that's the way it's supposed to be. At a base voltage reading of -1.2 and emitter reading of -.2.0V i get 0.700v, the diagram shows it should be zero (0) volts. Is this what it's supposed to be?
