Technics SU-8055: STK-0050 Supporting Circuit Troubleshooting

This time around more than just the STK is knackered so we have to do some digging into the supporting circuitry. With respect to checking for continuity on pins 2&3, you also want to check 8&9. If either pair is shorted, the pack is definitely bad. Because you're checking both sides, the orientation I was confirming in the video doesn't actually matter. 00:00 Introduction 00:59 Disassembly (Top) & Initial Investigation 02:16 Disassembly (Bottom) & STK-0050 Pins 03:02 How you know the pack is bad 07:21 STK-0050 Removal 09:34 Evaluating the bare STKs 12:27 Installing power IC "replacement" test resistors 13:26 Power on test 13:52 Measuring the supporting circuit Audiokarma SU-8044 Repair Thread: https://audiokarma.org/forums/index.p... Useful products from the video: • STK-0050 Darlington Power Pack: https://amzn.to/33TjDRo • Multimeter: https://amzn.to/3coravp • Organized Resistors: https://amzn.to/3hTB0X3 • DeoxIT Contact Cleaner and Fader Lube: https://amzn.to/303BR1z • Hakko FX888D Solder Station: https://amzn.to/3hXwmHQ • Irwin Cutters & Pliers: https://amzn.to/364atnU • Irwin Strippers: https://amzn.to/3cpXDkU Videography gear: • Samsung Galaxy Note 9: https://amzn.to/32XY16Z • Audio-Technica AT899 Condenser Mic: https://amzn.to/3kOBSyl • Steinberg UR22 USB Interface: https://amzn.to/3iZ8QeD • Gooseneck Phone Holder: https://amzn.to/3kDuFkg • 70" Tripod w/ phone mount: https://amzn.to/32YswK6 Edited with ShotCut: • https://www.shotcut.org/ As an Amazon Affiliate, I receive commission for qualifying purchases.