After checking through most of the circuit involved with the Ext Horiz function, and finding the signal going through all the way to Q824, and still no trace, I figured out what was wrong.
After switching to Ext Horiz, the trace was way off to the left, so I have to turn up the intensity knob to 3 o'clock and the Horiz Position knob to 1 o'clock. Normally, In A sweep, the Intensity knob is around 11 o'clock, and when in A Intens B or B delayed, the Intensity is at noon.
Is the low intensity and shifted position while in Ext Horiz normal? I did not see anything in the manual about this. Also, the phase shift a 1 MHz is 42 degrees. Is this excessive? The shift negligible/invisible at 100 KHz.
Also, I broke one resister when unsoldering a lead to check the resistance. The lead came out of the body, and I think it was because i did not have a heat sink on the lead. I cut open the resistor and it looks like a carbon composition resistor -- filled with a black carbon paste of some sort.
Does it matter performance-wise if I replace the carbon comp resistor a with carbon film one?
Thanks for all of the help!
