Hello, I recently got a Tektronix 2232 with a interesting issue, the trace is very thick about 2 inches, the volts/div is working correctly so is the time base and triggering, if I feed a signal in it is displayed correctly but the trace is still very thick, both channels are having the same issue. I have measured all of the voltages coming out of the power supply, here is what I got:
+100v = 102.0v
+30v = 30.0v
+8.6v = 8.50v
-8.6v = -8.47v
+5v = 5.30v
-5v = -5.69v
I have also noticed high heat coming from RT901 and RT905 and the vertical amplifier and preamplifier. Also when it is turned off all of the power rails go to 0v except for the -5v rail which slowly drains to 0v.
Here is the service manual for my instrument (there are two different ones):
https://archive.org/details/tektronix_2232_Service_Manual/Any help would be greatly appreciated!