Update: If I flip the cab power switch to what seems like the on position (up) I get all of the volts, except for the 5V line. I hit the 12, the 28, the lamps, but no 5V.
I accidentally just tested the voltages with the switch flipped backwards and I now have 5V. I understand that the switch direction is somewhat meaningless. I just wanted to point out that regardless of switch position my 12v, 28v and lamp lines are getting juice on the PS. Only the 5V line is impacted by power switch position. I installed a new switch and nothing has changed. If the switch had been bypassed everything should be showing. Instead the switch is directly effecting the 5V line and only the 5V line. Any ideas?
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I picked up a BK last week that needed some TLC: https://pinside.com/pinball/forum/topic/nerdygrrl-gets-knighted
Yesterday I tested the PS and as you would expect, a good chunk of my caps were bad. My initial testing showed my 12V and lamp line were ok, but all of the other lines were below spec. My 5V was sitting at about 1.8 down the line.
I recapped the PS and that helped my solenoid line, but my 5V was still sitting at 1.8. I tested my BR and that tested fine, so I decided to swap the Q5 (even though original tested fine). I installed the new Q5 (lining up as should be), now when I test my 5V I get a higher initial reading, but the voltages quickly drop to 0. Almost like when you test a capacitor after powering it on and it drains.
I checked the new Q5 and it tests fine. Reflowed the connectors on the Q5, reinstalled, same deal, starts off higher in the 4's and 5's and quickly drops.
I went ahead and put the old Q5 in (which also tested fine), voltages are holding steady at 1.8V. The fuses are fine, and connector looks good and was reflowed.
I know there isn't a lot to this 5V line and I probably should just go ahead and swap out the BR, aside from that does anyone else have any suggestions? Has anyone seen this before?
Edited OK, let me clarify, I was calling Q5 (2N6059) a VR looks like the manuals refer to 2N6059 as VR.
So my new Q5 is acting weird. Old one holding strong at 1.8V