SONY MBX-266 Z50CR MB S1202 4RM02 board repair

[stingerchamp]

SONY MBX-266 Z50CR MB S1202-2 48-RM02 021 board repair
is possible or not.

Pu4103 ,RT8223M IC is burnt in such a way that a gap is created between motherboard sides like a hole lol

PIN 16,17,18 of this ICs are damaged and on the other side there are capacitors closed by to the damaged pad.

Need help or suggest is this board repairable or not if we replace IC
and if yes then how?
https://datasheetspdf.com/datasheet/RT8223M.html

Schematic - https://www.badcaps.net/forum/showth...t=39080&page=2

Any suggestions

.

[emestee]

Re: SONY MBX-266 Z50CR MB S1202 4RM02 board repair

Find a BV, it'll be difficult to verify repairs if you dont have it. In principle yes, this is salvageable. You'll need a dremel, bakelite or another material to cover the hole that's sufficiently heat resistant, UV mask and lamp to create flat work surface, jumper wires to recover the traces, and all of this has to be done under microscope. I've seen people do it however.

[emestee]

Re: SONY MBX-266 Z50CR MB S1202 4RM02 board repair

Here watch this: https://www.youtube.com/watch?v=h4HNEWdvv8c. It's a silent video, you dont need to know russian

[stingerchamp]

Re: SONY MBX-266 Z50CR MB S1202 4RM02 board repair

Here watch this: https://www.youtube.com/watch?v=h4HNEWdvv8c. It's a silent video, you dont need to know russian

Thank You.

[mcplslg123]

Re: SONY MBX-266 Z50CR MB S1202 4RM02 board repair

BV not available freely. Remove the IC and 4 mosfets connected to this IC and then check impedance on both the coils. If impedance is good , then it makes sense to try else you need to findout what else is wrong. If layer beneath the surface is damaged, may not be repairable.