Sagem 9xx no signal

[Stan0]

Has anyone saw the Sagem without signal?
And how to repair this?

In Years ago I have this problem, I change the back cover, all was allright, but now it need some circuit. Has anyone scheme?

[ataman]

Try to change PMB2905.

[gsmsalers]

Change audio ic, or antenna switch. I don't know service manual name. It is easy to find.