Hi Vincent,
I will wait for the proper parts, but after the test of the transformer I wanted some confirmation I was on the right track.
Question: do you have an idea of the temperature of the FET in your scope?
According to the datasheet, the FET installed now should be able to work up to 120 degrees Celsius, but like I said, I don't want stuff to be (so) hot.
Talking about hot: there is some discolouration of the PCB of the area around R256 - R259 and R266 - R271 (Vertical deflection circuit) and the second area around R888 - R 891 (Intensity, Focus & Blanking) .
I will check these too.
Looking for pictures of other 22xx scopes show that it's mostly the 2215A and the 2235 that seem to have the exact same thing going on, like this one here:
Several pictures of eg. a 2213 do not show the discolouration.
BTW, I read your 2232 repair story, that was quite a lot more work than I had to go through with my 2215A!!
Thanks for that information,
Un saludo,
Leo
satbeginner