A little trouble

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Andrew Gehring

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Feb 28, 2023, 9:10:17 PM2/28/23
to IMSAI 8080esp
Hi All,

I recently received my IMSAI and I've begun assembly. I am at the stage just before the switches, but when I apply power all of the LEDs in rows LO, LS, LA (8-15), and LD come on and stay on.

Using the switch the power led behaves as expected, and the ESP looks correct based on the terminal.

Any hints?

Regards,
Andrew

Jonathan Bayer

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Mar 1, 2023, 4:45:18 PM3/1/23
to imsai8...@googlegroups.com

Check ALL your solder joints.  Something similar happened to me, turned out I missed one solder joint


JBB

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