Nokia X7-00 shows 'Charger Not Supported' error repair solution

Here's the guide on how to fix the Nokia X7-00 that shows "Charger not supported" error when the battery charger is being plug-in. This solution below shows the so-called BTEMP 47K resistor in Nokia X7-00 devices that mostly known by technicians that if being damaged will result to Charger Not Supported problem. This is another not charging problem issues but with a different method on how to fix it.

You can view the larger image here. Just locate that component mounted at the side of the PCB board and replace it. Some problems may also cause by a battery connector, so ensure that the battery terminal are also okay, before attempting to replace it.

Read more

Nokia X7-00 Display Problem Solution

view larger image here.

- Check the display pin connector, clean it, rework or re-solder it if necessary.
- Check the capacitors and coils, replace if necessary, and then check the VBAT voltage and the VIO voltage on it. Those are the supply voltages for the display
- Check the two DSI line choke filters
- If those parts above already checked and seems nothing wrong, the problem possibly exist on the Display UI chip. Reworking or replacing it will only fix the display problem

For damaged or lifted display pin connector or due to wet or water damaged, here's the tracing guide if you might think that the problem lies on a broken display signal line paths.

view larger image here.

So, hope this helps you in fixing display problem on Nokia X7-00.

Read more

Nokia X7-00 Not Charging Problem Solution

Read more

Nokia X7-00 Handsfree Speaker No Audio Problem Solution

 

View larger picture here.

If the first attempt of those methods above doesn't fix the speaker audio problem. The next option is to work on the Audio Codec IC. You may check the VBAT 3.7v across the filter inductor coil, this is the supply voltage to make the Audio IC work.  If the voltage is okay, check all the surrounding components of the Audio chip.

 

 

Read more