Search found 4 matches

by awoodbridge
Mon Jan 23, 2023 11:54 am
Forum: Geiger Counter
Topic: Miss-wired Pulse . . now it's dead
Replies: 7
Views: 33917

Re: Miss-wired Pulse . . now it's dead

New micro fixed it, I'm back up and going.
by awoodbridge
Fri Jan 20, 2023 10:05 am
Forum: Geiger Counter
Topic: Miss-wired Pulse . . now it's dead
Replies: 7
Views: 33917

Re: Miss-wired Pulse . . now it's dead

1 Data
2 +
3 Gnd

Since that is what was on my circuit board, I thought I was smart enough to put them in the correct order when I created it, I did not.

If I short the tube clips, the voltage drops to near 0V as you anticipated.
by awoodbridge
Wed Jan 18, 2023 7:54 am
Forum: Geiger Counter
Topic: Miss-wired Pulse . . now it's dead
Replies: 7
Views: 33917

Re: Miss-wired Pulse . . now it's dead

Previously, I had just shorted it before like the troubleshooting suggested looking for a click.

With my meter there is 3v between TP1 and Ground w/ or w/o the micro.
by awoodbridge
Fri Jan 13, 2023 6:05 pm
Forum: Geiger Counter
Topic: Miss-wired Pulse . . now it's dead
Replies: 7
Views: 33917

Miss-wired Pulse . . now it's dead

I mis-wired J6, and now everything appears to be dead.

-I still here the whine of the HV when it's turned on
-I'm not getting anything from TP1 to Ground.

What are the likely candidates for parts to replace/check?