this is my little friend I was in touch yesterday : The Atari Asteroids PSU:
First did some cleaning.
Replaced F5 and did some measuring. Noticed that the schematics was somehow tricky and reworked the figures of the manual.
Measure point of GND is blue spot in Fig 3.
Measure points of fuses is the red spot. This should be the values
F2 vs F3 (7A)= ~15 VAC (VDC after diode cr1, cr2)
F2 vs F3 (3A)= ~36 VAC
F6 (3A) vs GNS= 6.3VAC
F2 - F3 -> 21V
F2,F3 vs GND -> 10,5V
F4 - F5 -> 38.3V
F4, F5 vs GND -> 19.15V
F6 vs GND : 14.45v
F6 vs F4 : 31.8V (yellow cables)
For first okay, since the load of the monitor is yet to come.