Hantek 6074BC - Damaged U807 - what is it?

antoffka

Yes, the program sees the device, everything works, but there are no measurements.

amy

Please test the voltage of these points and check whether the voltages are consistent with the marked values.

antoffka

Tp in image

antoffka

if i doo here

antoffka

I consider it to be defective HAD1511

antoffka

I can not find where I can buy it (HAD1511)

amy

Please confirm whether the voltage if this red markpoint is 1.8V.




The point (you said it is short circuit) in the picture below is interlinked with the point 1.8V in the picture above.

antoffka

Hello Friend ! Of course I was wrong! in (TP3) - (+1.8V on you foto) = 1.75v , point on th foto were "1" Ohm  interlinked with the point 1.8V . If L33 set , to TP3 voltage is zero.

amy

Do mean the 1.8v voltage become 0V when the 0 ohm resistance of L33 is welded?
The 2.7V in the figure below should be 1.8V, right?



Remove L33, C214, C216, C213, and test whether there is short circuite on the two pads of C213.



If all the above are satisfied, it can be determined that had1511 is faulty.

If you can't find it, you can contact your seller to get the chip or get it from us, but you need to pay the freight from China to you.

antoffka

Yes, that's right, I deleted the items C214, C216, C213 but if L33 connected , power in L33 = "0" . I wrote to my official seller in Russia, but he said that the guarantee was already over and offered to buy another device. If there is an opportunity to purchase a microchip (had1511) from you, I would love to do it, because even in online stores in China you can’t find it.