Please help me identifying this Chip M65RA L4916
I need some help, with identifying this Chip M65RA L4916 and finding a datasheet for it. This chip is used in a SONY MDR-NC22 noise cancellation headphone. The headphone still works but does not cancel noise anymore. I did make some measurement and suspect this chip to be bad.
Edit: typo corrected
I need some help, with identifying this Chip M65RA L4916 and finding a datasheet for it. This chip is used in a SONY MDR-NC22 noise cancellation headphone. The headphone still works but does not cancel noise anymore. I did make some measurement and suspect this chip to be bad.
Edit: typo corrected
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Have you got the service manual, which includes schematics?
SONY MDR-NC22 VER.1.2 Service Manual download, schematics, eeprom, repair info for electronics experts
On that version of service manual the chip you are referring to would be LM4916?
http://www.ti.com/lit/ds/symlink/lm4916.pdf
Hope this helps.
SONY MDR-NC22 VER.1.2 Service Manual download, schematics, eeprom, repair info for electronics experts
On that version of service manual the chip you are referring to would be LM4916?
http://www.ti.com/lit/ds/symlink/lm4916.pdf
Hope this helps.
Well, I ended up replacing the electret microphones and dialing the cancellation setting. Now it is much better than I remember it was.
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