Hello All,
Could someone be so kind as to measure TP1 and tell me what TP1 should read
under normal circumstances. I am getting 7v at TP1 and need to know if this is
correct or even close. I think it should be zero with zero input, but I am not
certain.
Cheers,
David
On 01/10/2015 03:15, David Garrido wrote:
Hmm…..
I am having one heck of a time tracking this one down folks. I am starting to
entertain the idea that there is a possibility that somehow, me having this
things wide open is causing my difficulties here. Besides having the “Lid
Hmm…..
I am having one heck of a time tracking this one down folks. I am starting to
entertain the idea that there is a possibility that somehow, me having this
things wide open is causing my difficulties here. Besides having the “Lid Open
and Disable switch,” I have that pulled
Hello All,
I am making a little more headway on this issue of the OVERLOAD & FAULT led’s
being triggered and shutting down the system.
In paragraph 3-34 on page 3-4 of the manual it states:
Once U2-3 has been pulled low and a 3-9ms delay, the Operate FF J Input, U41-4
is supposed to go high.
Hi David,
My eye keeps wandering over to U40, U43, and that abortion of
tantalum capacitors, and snubber networks hung on the inputs to
U40, U1 and U2.
Whenever I see stuff like that, I know the engineer was getting
frantic over being toasted by glitches. FF clocks just aren't
at all amused
Hi David,
Do be careful inside of that 5205A, it has lots of gotcha
points that would be quite happy to light you up like a
Christmas tree.
Mine has some issues with the fault circuitry from time-to-time,
particularly after it has sat for a while. I believe that most of
the problem is related
Hello Chuck,
You are absolutely correct, this is a one hand in your back pocket job, no
doubt!!!
This is VERY clean inside, in fact one might even say pristine. Which is just
one of the many reasons I want to get it going properly. I re-seated all of
the boards during the initial inspection
David wrote:
I am not certain I want to disable the OVERLOAD circuit to make this
adjustment without knowing what may be wrong for fear of doing more
harm than good. But on the other hand, this may very well be
exactly what is causing the tripping in the first place.
What you need to do is
Hello All,
I know this is not specifically discussing precise voltage, but it is about
producing it. We should consider starting a FLUKE calibration equipment repair
forum.
Anyhoo………I have been scratching my head over this 5205a issue for a couple
weeks now. It presents with a OVERLOAD
