TP1 very low - TP4 decreasing

TP1 very low - TP4 decreasing

Postby flolap » Apr 20th, '21, 18:17

Hi there! :P
this is my first built, and here is where i am....

I built IO board, sequencer parts for auto trigger, and noise

I know there is a few topics on that subject, but my problem adds a bit of it all (i think)

As i saw on the topic "Cannot adjust TP1 to 5V : stays around -0.2V [SOLVED]" by tupinamba, i checked voltages at all square pads and i get the normal +5v
but at TP1, i get at most 0.6v (most of the times, its around 0.3)

and then, weird thing (maybe some of you will be able to tell me whats that) when i tried to set up TP4 at 130mV, i get a maximum of 70mV which is slowly decreasing if i keep probing that point, untill all power is gone :?

Maybe this can ring some bells with people that know their business (i hope!) :)

Any help would be greatly appreciated as i triple checked all components orientation... :oops:
flolap
 
Posts: 2
Joined: Apr 19th, '21, 18:02

Re: TP1 very low - TP4 decreasing

Postby flolap » Apr 21st, '21, 21:07

Ok so apparently i wanted to jump many steps by following what was written on the board...
Those adjustments are to be made in the end
:roll:
flolap
 
Posts: 2
Joined: Apr 19th, '21, 18:02

Re: TP1 very low - TP4 decreasing

Postby metro_electro » Jul 30th, '21, 13:21

Still good information for those who are building. Thanks for sharing.
metro_electro
 
Posts: 13
Joined: Jul 14th, '20, 19:56


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