[sdiy] [AH] Arp Solina with excessive chorus noise

[Phil Macphail]

>> Unlikely.  Except in cheap crappy switched-mode power supplies, electrolytics just don't fail.  Maybe if you're working on equipment that was built in and has not been switched on since the 1950s or 1960s, you'd have a problem.
> 
Interesting that you say that. TDS500/700 oscilloscopes have bullet-proof SMPSU's, but the 100 or so decoupling electrolytics on the main boards are legendary for leaking. If you are lucky the scope starts failing self-test as an early warning. If you aren't so lucky then you need to find the damaged tracks and vias. YouTube is full of repair videos.