Nothing too fancy. Fixed 3 UMK3 boards tonight and thought I'd share what I did.
BOARD A - No Video, No Audio
-) Reseated the graphics chips (U45, U47). Video now functions as advertised.
-) Pressed down on the audio processor and the sound came on until I leg go of the pressure on it. Inspected the legs and found no issues. Reseated the chip next to the processor (U57). Audio now functions as advertised.
BOARD B - Totally Dead
-) Re-seated the revision roms. Board booted up and now works 100%.
BOARD C - All Roms Fail Test (All Red)
-) Found numerous bent socket feet on the solder side of the board...
Strightened socket feet. Roms now all check good (green) and board functions 100% with no defects noted.
That's all folks. Hopefully this helps someone.
BOARD A - No Video, No Audio
-) Reseated the graphics chips (U45, U47). Video now functions as advertised.
-) Pressed down on the audio processor and the sound came on until I leg go of the pressure on it. Inspected the legs and found no issues. Reseated the chip next to the processor (U57). Audio now functions as advertised.
BOARD B - Totally Dead
-) Re-seated the revision roms. Board booted up and now works 100%.
BOARD C - All Roms Fail Test (All Red)
-) Found numerous bent socket feet on the solder side of the board...
Strightened socket feet. Roms now all check good (green) and board functions 100% with no defects noted.
That's all folks. Hopefully this helps someone.


