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Re: [TCML] Shinola meter, parts wanted or for free distribution - review

I've done similar to a Fluke 77. Totally dead. However, it came in real handy a couple months ago. I happened to have a second Fluke 77 that I killed the voltage measurement function on. I looked at the board and a 1W resistor was fried. Opened up the old dead Fluke and used it's resistor as the replacement (identical). Presto, Fluke was up and running and good as new (no calibration necessary as it was a current limiting resistor off the main probe connection).
So even though you might kill a meter, keep it around for parts. You just never know when it will come in handy. Of course it took 10 years before it came in handy, but it sure made a quick 15 minute repair possible. 

Bart

Antonio Carlos M. de Queiroz wrote:

Jim Mora wrote:

This Sinometer accidently tried to measure 120v AC on the ohms scale,
certainly not the first time I have done that during my longish career. It is the first time I nearly needed a fire extinguisher for taming a DVM ;-
About destroying cheap meters: I had one actually not bad, and was trying to measure about 25 kV by connecting the meter to measure the current trough a 
high-voltage resistor made from a series of 5.6 MOhm resistors.
Everything fine, until I turned off the system, and turned off the meter too. Some minutes later, I resumed the measurements, and turned on the HV, forgetting 
to turn the meter to the microamperes scale first. The result was 25 kV
inside the meter without any protection and sparking everywhere. The large resistor in series was not enough protection. No marks visible in the board, 
but the meter is dead.

Antonio Carlos M. de Queiroz

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