I've a Tek 2465B that I recently acquired, it was described as 'no trace' and that is true, when powered up various leds flash for a bit but no trace is visible, with or without the beam finder pressed. It's a 1996 model but no surface mount caps.
The first thing was to check the power supplies via the main board test point (actually a 14 pin DIL socket) J119. Measuring the voltages I get:
Pin Measured Spec
1 -14.95 -15.0
2 3.940 5.0 (digital +5v)
3 -18.66 (-15v unreg)
4 10.00 10.0
5 -4.986 -5.0
6 15.01 15.0
7 0.0 0.0 (gnd)
8 87.0 87.0
9 42.47 42.4
10 0.008 (unused)
11 -8.03 -8.0
12 0.761 5.0 (analog +5v)
13 -1.365 (?)
14 -1.363 (?)
So from this it looks like the +5v for digital is low, and the analog +5v is very low.
Looking at the PSU boards there is no evidence of either bad/leaky caps or overheated components.
Whats the next thing to test?
