Itune Fatman carbon edition burned part U6

[coed1992]

I am working on an hybrid amp
iTube Fatman carbon edition, without an output signal. After sometime of troubleshooting I found one part that was burned labeled U6 on the board near the TDA7265 amp chip and with a smd code A1xx encircled in red in my photo. Can anyone Identify this part since it was burned I can only see A1 but some letters after it are not visible. Since the label is U6 on the board I believed this not a transistor.

 

[coed1992]

By the way, this U6 chip is connected to pin 5 of TDA7265 amp chip, which is the mute/standby pin. Let me try to disconnect this pin, it might
give an output after.

 

[tomchr]

Your best bet is to find a schematic or service manual for this so you can figure out what that IC is supposed to be.

Tom

 

[coed1992]

Yes, I had tried to email Darred amps in Hongkong, because they same model of this Hybrid tube amp. I hope they will kind enough to send me the schematics. If they will, I will post the schematics here for sharing.

 

[coed1992]

For the mean time I disabled the mute protection by lifting the pin Pin 5 of the chip amp TDA7265, and it work. Just sharing to those having some issue. Til now the amp is working fine.

 

[coed1992]

But don't forget to take out the U6 first before disabling the mute function.