Recent Posts

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Out of Production Hardware / Re: Technical Issue with 3x Tracker 2700 and 2700S
« Last post by jvthorsley on February 22, 2018, 04:26:39 pm »
Sounds like capacitors that have developed high ESR on the low voltage P.S.U.
Have you a meter to measure ESR? Their almost as good as a working Huntron!
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Out of Production Hardware / Re: Technical Issue with 3x Tracker 2700 and 2700S
« Last post by admin on February 22, 2018, 11:59:14 am »
I am guessing that a trace or via got damaged during soldering or removal. Take a close look with a good magnifier or video microscope.
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Out of Production Hardware / Re: Technical Issue with 3x Tracker 2700 and 2700S
« Last post by emanuxelz on February 22, 2018, 09:29:04 am »
Unfortunatelly I couldnt repair the boards. The one that was shorted I found the sine wave chip shorted (+5 -5) but the other 5v short i couldnt find.

The board that was good before still hasnt been fixed. I replaced the lf412s and the high speed buffers.
I ran the diagnostics and offsets but i still can have a good signature.

On the 200mv 3v selection the display is crazy with random noise.

At 5v 1k I can start seeing things. The oval shape is now almost a flat line but it is still a ellipse/oval/circle shape like I was measuring a capacitor.

What could it be? I can't understand why it went bad just by removing a pair of ICs and putting it back even after I replace them for brand new ones.
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General Discussion / Re: Software Suggestions
« Last post by admin on February 19, 2018, 08:09:17 am »
Neither of these suggestions are in the current release. I would like to the see the camera position in the Board Image very much, though. I will keep pushing that one.
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General Discussion / Re: Software Suggestions
« Last post by IsaiasW on February 18, 2018, 02:12:42 am »
Hello Huntronian, was this ever implemented? It would fit our needs perfectly.
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Out of Production Hardware / Re: Technical Issue with 3x Tracker 2700 and 2700S
« Last post by emanuxelz on February 09, 2018, 09:07:08 am »
I removed the 3 zero ohms resistor to separate the circuit.

5v and gnd(d) from r180 are shorted.

+5va and -5va are shorted but their middle ground isnt shorted.

My last resource would be supply it with 5v and wait for the smoke with a Fluke thermal camera.
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Out of Production Hardware / Re: Technical Issue with 3x Tracker 2700 and 2700S
« Last post by emanuxelz on February 08, 2018, 06:50:04 pm »
I was wondering, is there any way to separate at least parts of the circuit from the same 5v supply? Like removing zero ohms resistances for instance.

Also, how can 3 voltages from 3 different regulators(wich I already removed) can be shorted? That would mean I have at least 2 shorts one from 5v-gnd and other from +5va-gnd-5va.

Thanks for your help, I will try the caps tomorrow.
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Out of Production Hardware / Re: Technical Issue with 3x Tracker 2700 and 2700S
« Last post by admin on February 08, 2018, 09:15:23 am »
Sounds like a shorted cap (or caps). You might need to start removing them (start with the tantalums) and watch for the short to disappear.
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Out of Production Hardware / Re: Technical Issue with 3x Tracker 2700 and 2700S
« Last post by emanuxelz on February 08, 2018, 08:22:31 am »
I found others HC4051s deads.

Everything suplied with +5v, -5va, +5va are shorted.
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Out of Production Hardware / Re: Technical Issue with 3x Tracker 2700 and 2700S
« Last post by admin on February 06, 2018, 11:11:42 am »
Heh, heh. The first 2700 versions had regular, soldered-in micro-fuses that had to be replaced when blown. The fuses on the later versions of the Tracker 2700 main board were "self-resetting".
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