Hi everyone,
On my desk: a Sennheiser in-ear monitor ew300 g2 IEM (SR300 - the transmitter) almost completely dead, no display, power is on (red ring is shining).
On the Motherboard there is a burned item, it says C 491.
It has 5 pins (a double transistor?), what is it.
I can't find a circuit diagram or a service manual on the web.
Sennheiser is not helpfull, they do'nt answer at all.
Can someone help me?
The circuit diagram or a service manual would be nice.

Attached a picture of the item.

Thanks in advance
Benno

https://forum.allaboutcircuits.com/...or-ew300-g3-iem-portable-uhf-receiver.156933/

 

Hello there ,welcome to AAC!
this is all I could find but they charge $20 U.S.
I didn't look very hard. popped up right away.
https://www.ultimateservicemanuals.com/products/sennheiser-service-manuals-schematics

 

Hello there ,welcome to AAC!
this is all I could find but they charge $20 U.S.
I didn't look very hard. popped up right away.
https://www.ultimateservicemanuals.com/products/sennheiser-service-manuals-schematics

Thank you,
I found it already, but no Service Manuals only User Manuals.