Audio Amplifier IC Replacement

The power amp on my audio system recently failed and the root cause has been narrowed down to several faulty ICs on the main board. I already have the schematic and a parts list; however, I need an experienced technician to remove the bad chips and install new ones—between three and five ICs in total.

Here is what I’m looking for:
• Careful diagnosis around the affected section to confirm exactly which ICs have failed.
• Clean, ESD-safe desoldering of the old chips and precise re-soldering of the replacements (through-hole or SMD, depending on your findings).
• A quick verification that bias, gain and thermal readings fall back within spec once the new parts are in place, ensuring the amp delivers undistorted sound at rated power without overheating.
• A short report (or video) showing before/after measurements so I can log the repair.

I can ship the board to you or we can arrange local drop-off if you’re nearby. Feel free to tell me what test gear you’ll use—audio signal generator, oscilloscope, multimeter, bench supply, etc.—so I know the job will be handled professionally. Let me know your estimated turnaround and any questions you have about the schematic or parts sourcing.

need to be in Ho Chi Minh city. total around 100 pcs, fix time about 30-40 min each