2D72 dead

levj · Post time 2021-4-19 16:25:55

Hi. My 2D72 is dead, no powering on and not charging (all led is always off). I bought it from Hantek online store about two yers ago.
Battery ok, about 4 volt.
Probably usual known problem, but page with files and explanation is expired.
What should I do?

Thx for answering.

levj · Post time 2021-4-21 19:01:44

Edited by levj at 2021-4-21 19:02

Hi amy, thx for answering.
5v on fuse and on capacitor, but no 4.5v on C19 and no 3.1v on L5.
U6 becomes hot (id marker is not visible on IC, so I not see his datasheet).
C19, C15 and C21 is as shorted (not have schematic, so I do not know if connected to U6).

levj · Post time 2021-4-22 21:10:40

Thank you very much amy.
I will buy it on aliexpress. Time for delivery is abuot 45 days for Italy.

Seller is Hantek store and unfortunately it costs me cheaper to buy it back than to send it to China for renovation.

In any case I will desolder U6 from board and try if my 2d72 power on only with battery.
I will keep you update.

levj · Post time 2021-4-29 21:28:05

Edited by levj at 2021-4-29 21:29

ok, I try to short pin 6 and 7 of u6 and it go with battery.
I not shure it's a good things, but now I know that my 2d72 work and problem is U6.
I wait for it.

levj · Post time 2021-5-10 17:14:57

I replaced U6 with ETA6002 and my 2D72 is alive.
Thank you amy.