Products > Test Equipment
BK Precision LCR meter 879b with ADC failure
mountaindude:
...and it's a winner.
Replacing that TPS60400DBVR did the trick - meter now works as new.
mountaindude:
Full writeup of the repair of the BK879b: https://ptarmiganlabs.com/blog/2015/12/06/fixing-a-broken-bk-precision-879b-lcr-meter/
ATCRET:
I zapped my meter this morning causing ERR 02. Checked the fuse (good), then found Mountain dude post - thanks a lot, verified a bad -5 VDC. The meter checked good after removing the part and applying -5 VDC. Ordered TPS60400DBVR on EBay.
mountaindude:
--- Quote from: ATCRET on February 16, 2016, 01:17:20 am ---I zapped my meter this morning causing ERR 02. Checked the fuse (good), then found Mountain dude post - thanks a lot, verified a bad -5 VDC. The meter checked good after removing the part and applying -5 VDC. Ordered TPS60400DBVR on EBay.
--- End quote ---
Sorry about the zapping, great that you found the issue! My meter works great these days, hopefully yours will soon too.
The Chump:
I too have had a very similar failure, causing U603 to be broken.
I coudn't get hold of TPS60400DBV but I took a chance with the closest available alternative, ADM8828
Just requires blobbing the SHDN pin to GND and it works
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