How can I determine if the via's at removed caps lead holes are still intact and conductive. Can a damaged via be repaired?
Regards, Richard
Regards, Richard
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I know many folks on this forum warn against conductive glue and suggest removing it immediately upon site. I'm here to vouch and say these people know what they are talking about. To be more accurate, the glue isn't intended to be and doesn't actually start out conductive. It gets conductive as it is heated by components that get hot. The glue starts out to be a light tan color but as it is exposed to heat, it gets darker and darker until it is a dark brown. I have found that it becomes conductive at the point that it reaches a light brown color on darker.
Here is an experience I... -
Hi All,
We've got a 8th gen 13" Spectre X360 which seems to have faulty onboard memory. Windows was bluescreening with Memory_management errors. Running HPs built in memory test brings up memory errors, but it does not tell you which chip. Is there a MODS like program so you can determine this? Memory is on board unfortunately and don't really want to go order 8 chips and replace all 8 if I don't have to.
Lastly do you have to use the exact same chips, or can you use chips with the same specs but from other manufactures?
Thanks for your assistance.... -
So, I have old smps NEC psu, who not work correctly... it has no label table of declaration, and I supose that is from some printer or so.
The output is 34v.
Switching element is STR16006
Mains caps are 2x 470uF/250v
Output caps is 10000uF/40v
I dont know a topology, only have interest to know in which way should determine power for what designed for.... -
I'm working on repairing a keyboard, there is trace damage on the membrane. So I got my little pen of silver conductive trace repair paint and repaired the trace. Let it completely dry, test it, and its not working. So I take my multimeter out, put it on continuity, touch 2 different area of the paint, and nothing. I put it on resistance, I get OL most of the time, occasionally it might flash to something ridiculous like 17 mega ohms or something.
Why is this stuff not working? This is what I am using https://www.amazon.com/gp/product/B00B88B9KI -
I'm not sure if this is correct, the output pin 7 is grounded or the ic has a short. I'm just trying to rule it out. https://www.ti.com/product/LM2574?qgpn=lm2574