Fluke 8060A Repair

[Updated June 2013, see end of article.]

[Also see: newer article on IBM 8060A/AA Refurb]

The Fluke 8060A is another early-80s vintage handheld DMM.  With a 4½ digit  20,000-count display, RMS-responding AC bandwidth to 100kHz, and direct readout in dB, it is still in use today and a favorite of those working with audio gear.

MalfunctioningThis eBay acquisition was described as “powers up, but I can’t test it.”  I assumed it would be non-functional, and when it arrived, that suspicion was confirmed.  The display flickers, is sometimes very faint, but mostly shows a fixed arbitrary number, regardless of what function or range is selected.  It is also in sad cosmetic shape, being very dirty and grimy.  Repairs will be required to get this unit working again.

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Fluke 8020B Teardown

This Fluke 8020B DMM dates from somewhere in the early to mid-80s and is an updated version of the 8020A, Fluke’s first handheld DMM. The eBay seller’s description said this one “would not power up”. However, when I installed a battery, it worked perfectly. Overall, the unit is in very good cosmetic shape, especially after a thorough cleaning. The button for the AC/DC selector switch was missing, but thanks to a friend at the EEVBlog.com forum, a spare has been fitted, making the unit complete.

Discussion of this topic can be found at EEVBlog Forum.

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No-name vs. branded test leads

Ever wonder whats inside the insulation of your test leads?  This is a cross-section comparison of the wires from a generic no-name set of test leads and a Fluke TL75 set.  The TL75 set comes standard with many Fluke meters and are rated at 10A.  These generics are available for about $5, and carry no ratings at all, other than they’re 33 inches long.

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Tektronix 465 Oscilloscope Repair and Restoration

Tektronix 465 OscilloscopeAfter buying and refurbishing some older Fluke DMMs for use on my workbench during the past couple years, I recently decided to try something a little more complicated. So I found a crusty old “parts or repair” Tektronix 465 on eBay. It looked physically intact and the pix showed that it at least made a dot when the beam-finder button was pushed. Good enough.  I set about to win the auction, and did.

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