I got to test and build my DSO however, the screen all of the sudden went white. I powered it off and U3 has really hot to the touch. It had me wondering so I checked the 9v wall wart and it was showing 17V. I trashed the P/S and grabbed one that did measure 9V. Plugged it back in and it started to smoke and U3 smells and has a bubble so I guess it's shot. Anything I can do ?
the PID is cXwbcLb5
The board PN is 109-15000-00E1
I still get a white screen so I hope it's only U3 (I think it's a voltage regulator).
Thanks!!
BillyK
EDIT: It was the 3.3V regulator and D2 seems to be ok. I'll post pics when I can
Let the smoke out. 9V adapter bad
Re: Let the smoke out. 9V adapter bad
Can someone trll me what regulator to get nto replace this one. It's hard to read from the damage.
Thank you.
Thank you.
Re: Let the smoke out. 9V adapter bad
The part number for US is LM1117-3.3. Package is TO263
Re: Let the smoke out. 9V adapter bad
Whoops I ordered SOT223. I found the schematic afterwards.lol Thank you!jye1 wrote:The part number for US is LM1117-3.3. Package is TO263