My 30V 5A regulated lab power supply (QW-MS503D) is acting wonky: At power-up, the voltage quickly ramps up to 62V(!) (confirmed with multi-meter), holds there briefly (less than a minute) with current display showing around .15A before dropping to 0V. If there's an obvious part or parts to test/replace, please suggest! I'm a self-taught, older electronics hacker with some experience, some tools, and a good deal of caution and common sense. Thanks! Wayne
