EEVblog #777 - Keithley 177 Microvolt DMM Repair

Come on a ride as Dave repairs an intermittent Keithley 177 Microvolt DMM, garden paths and all. Service manual & Schematic: http://www.utwente.nl/tnw/slt/doc/app... Datasheet: http://www.datasheets.pl/integrated_c... 555 Timer T-Shirt: http://teespring.com/555timer-grey3 Negative Feedback T-Shirt in the EU: https://fabrily.com/negativefeedback Forum: http://www.eevblog.com/forum/blog/eev... EEVblog Main Web Site: http://www.eevblog.com The 2nd EEVblog Channel:    / eevblog2   Support the EEVblog through Patreon!   / eevblog   EEVblog Amazon Store (Dave gets a cut): http://astore.amazon.com/eevblogstore-20 T-Shirts: http://teespring.com/stores/eevblog Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/