Hello everyone.
Acer 5536, Hannstar JV50-PU
Model number 48.4CH01.021, 08252-2
First at all, there was short to ground on 19V line. Fix it.
Northbridge was also non-working /there is short to ground on L32/. Remove NB for testing /216-0754026/.
There is short to ground on L37 /with default CPU AMD QL-65/ With another QL-65 - 178Ohm...
After that I see U45 is blown. Replace it with another one.
When plug adapter and pressing power button, U45 become very hot and blown after 5-10 seconds. Hmz, I check replacement before solder it on the board. However, remove U45 and check it again - shorted. From donor board, replace U41 /TPS 51124/, U45, U42, U37, U40.
No result - with and without cpu, U45 blowns everytime.
Remove L37 and power again. U45 blown again.. Also remove C633 C634 C635 C664 C665 C666 for testing.
I'm stuck. Can someone give me a hint?
Add schematic and boardview in attachment. I'm using BoardViewer to open boardview file
| ! | MSF113 писал(а): |
| Shematic and BV already on forum. Deleted. |
Thanks and Happy Easter to all!
