@chappylv could be a filter (fuse) but before you go ahead and look for somebody who can do the microsoldering part for you, replace the display assembly. At least that way you can either rule it out, or rule in it, as the culprit. One of the main issue is going to be the unavailability of Sony schematics. Sony has stopped even making schematics which will make it difficult to trace components for failure.
Here is the trouble shooting sequence from Sony:
Check:
Check whether the phone vibrates after the on/off key has been pressed.
Action:
If the activation described above is not detected, refer to section 1.1 ‘Power’.
Check:
Check the connection between Display FPC and Main PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean the connectors.
Check:
Replace the Main PBA with a known working one and test the Front Cover Assy.
Action:
1. If the Front Cover Assy is still not working – replace it.
Run Touch Panel Calibration after replacing Front Cover
Assy according to 1297-3232!
2. Replace Main PBA.
1.6.1 Illumination
Check:
Inspect external port of Light Sensor on the Front Cover
Assy.
[image|927755]
Action:
If dirty – clean it.
Check:
Inspect the Light Sensor on the Main PBA.
[image|927756]
Action:
1. If dirty – clean it.
2. Replace Main PBA.
-
No, you do not have to necessarily replace the PCB. there are ways to creat new backlight ways if it is a component on the board etc. Let us know what you find.
+
No, you do not have to necessarily replace the PCB. There are ways to create new backlight ways if it is a component on the board etc. Let us know what you find.
@chappylv could be a filter (fuse) but before you go ahead and look for somebody who can do the microsoldering part for you, replace the display assembly. At least that way you can either rule it out, or rule in it, as the culprit. One of the main issue is going to be the unavailability of Sony schematics. Sony has stopped even making schematics which will make it difficult to trace components for failure.
Here is the trouble shooting sequence from Sony:
Check:
+
Check whether the phone vibrates after the on/off key has been pressed.
+
Action:
+
If the activation described above is not detected, refer to section 1.1 ‘Power’.
+
Check:
+
Check the connection between Display FPC and Main PBA.
+
Action:
+
1. If not properly connected – disconnect and reconnect.
+
2. If dirty or oxidized – clean the connectors.
+
Check:
+
Replace the Main PBA with a known working one and test the Front Cover Assy.
+
Action:
+
1. If the Front Cover Assy is still not working – replace it.
+
Run Touch Panel Calibration after replacing Front Cover
+
Assy according to 1297-3232!
+
2. Replace Main PBA.
1.6.1 Illumination
+
Check:
+
Inspect external port of Light Sensor on the Front Cover
+
Assy.
+
[image|927755]
+
Action:
+
If dirty – clean it.
+
Check:
+
Inspect the Light Sensor on the Main PBA.
+
[image|927756]
+
Action:
+
1. If dirty – clean it.
+
2. Replace Main PBA.
+
+
No, you do not have to necessarily replace the PCB. there are ways to creat new backlight ways if it is a component on the board etc. Let us know what you find.
@chappylv could be a filter (fuse) but before you go ahead and look for somebody who can do the microsoldering part for you, replace the display assembly. At least that way you can either rule it out, or rule in it, as the culprit. One of the main issue is going to be the unavailability of Sony schematics. Sony has stopped even making schematics which will make it difficult to trace components for failure.
+
Here is the trouble shooting sequence from Sony:
+
Check:
-
Check whether the phone vibrates after the on/off key has
-
been pressed.
+
Check whether the phone vibrates after the on/off key has been pressed.
Action:
-
If the activation described above is not detected, refer to
-
section 1.1 ‘Power’.
+
If the activation described above is not detected, refer to section 1.1 ‘Power’.
Check:
Check the connection between Display FPC and Main PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean the connectors.
Check:
-
Replace the Main PBA with a known working one and test
-
the Front Cover Assy.
+
Replace the Main PBA with a known working one and test the Front Cover Assy.
Action:
1. If the Front Cover Assy is still not working – replace it.
Run Touch Panel Calibration after replacing Front Cover
Assy according to 1297-3232!
2. Replace Main PBA.
+
1.6.1 Illumination
Check:
Inspect external port of Light Sensor on the Front Cover
-
Assy. [image|927755]
+
Assy.
+
[image|927755]
Action:
If dirty – clean it.
Check:
-
Inspect the Light Sensor on the Main PBA.[image|927756]
@chappylv could be a filter (fuse) but before you go ahead and look for somebody who can do the microsoldering part for you, replace the dispaly assembly. At least that way you can either rule it out, or rule in it, as the culprit.
+
@chappylv could be a filter (fuse) but before you go ahead and look for somebody who can do the microsoldering part for you, replace the display assembly. At least that way you can either rule it out, or rule in it, as the culprit. One of the main issue is going to be the unavailability of Sony schematics. Sony has stopped even making schematics which will make it difficult to trace components for failure.
+
Here is the trouble shooting sequence from Sony:
+
Check:
+
Check whether the phone vibrates after the on/off key has
+
been pressed.
+
Action:
+
If the activation described above is not detected, refer to
+
section 1.1 ‘Power’.
+
Check:
+
Check the connection between Display FPC and Main PBA.
+
Action:
+
1. If not properly connected – disconnect and reconnect.
+
2. If dirty or oxidized – clean the connectors.
+
Check:
+
Replace the Main PBA with a known working one and test
+
the Front Cover Assy.
+
Action:
+
1. If the Front Cover Assy is still not working – replace it.
+
Run Touch Panel Calibration after replacing Front Cover
+
Assy according to 1297-3232!
+
2. Replace Main PBA.
+
1.6.1 Illumination
+
Check:
+
Inspect external port of Light Sensor on the Front Cover
+
Assy. [image|927755]
+
Action:
+
If dirty – clean it.
+
Check:
+
Inspect the Light Sensor on the Main PBA.[image|927756]
@chappylv could be a filter (fuse) but before you go ahead and look for somebody who can do the microsoldering part for you, replace the dispaly assembly. At least that way you can either rule it out, or rule in it, as the culprit.