Volume rocker not working, what is wrong? [pics attached]

Tsury · Jul 14, 2012

Hi you guys.

I opened my phone to repair the LCD screen and now the volume rocker isn't working.
I attached images of my phone, if you need other images I can take them.

I just don't know what to check... Should I just try to put a new volume ribbon? Would that be enough?

Any help will be most appreciated.
Thank you.

Mister B · Jul 14, 2012

can you feel the rocker button click ?
are the small pop caps still located on the volume switch points ! as they do fall off easily & are incredibly small.
volume is part of main flex board so lets hope it not damaged.

Tsury · Jul 14, 2012

Mister B said:
are the small pop caps still located on the volume switch points ! as they do fall off easily & are incredibly small.

Yes, I can feel the rocker click (I think so), but I'm not sure what you mean by the pop caps. What are these? Should I add am image of my rocker (the plastic button)?

Mister B · Jul 14, 2012

the little plastic domes that sit on the volume board with just a spot of tack glue holding them in place.
If all present & button feels correct & both up/down dead then possible you damaged flex ...

Outlaw78a · Jul 14, 2012

what can we do if were missing pop caps, can i somehow trigger that function with a screwdriver for example, how exactly do "pop caps work ?"

Mister B · Jul 15, 2012

Just a small conductive graphite pad in center that bridges 2 contacts on the button board when cap pressed down.

tigger-gg · Jul 15, 2012

Mister B said:
are the small pop caps still located on the volume switch points !

On the picture you can see the little black dot, so they are still located.

Mister B said:
as they do fall off easily & are incredibly small.

:good: Oh yes, you are so right.

@ Tsury,
be sure that the main flex cable is connected to the main board.

Tsury · Jul 15, 2012

tigger-gg said:
On the picture you can see the little black dot, so they are still located.:good: Oh yes, you are so right.

@ Tsury,
be sure that the main flex cable is connected to the main board.

How do I check it? What other capability is the flex cable providing? The device is working, I can eliminate it in some other way probably.
You can use this guide to direct me: http://www.ifixit.com/Guide/Installing-HTC-HD2-PB81120-Logic-Board/5919/1

Thanks a lot!

tigger-gg · Jul 15, 2012

Tsury said:
How do I check it?

If the main flex cable is not connected to the main board, loudspeaker sound and vibration do not work.
http://www.ifixit.com/Guide/Installing-HTC-HD2-PB81120-Logic-Board/5919/8

---------- Post added at 08:35 PM ---------- Previous post was at 08:28 PM ----------

Also be sure that the flex cable of volume rocker is not broken.

---------- Post added at 08:45 PM ---------- Previous post was at 08:35 PM ----------

Outlaw78a said:
what can we do if were missing pop caps,

You could buy new ones, e.g.:
http://www.chinagadgetland.com/htc-desire-hd2-volume-button-contact-chiporiginal-p-10004635.html
or
http://www.enjoyapples.com/volume-button-contact-chip-for-htc-desire-hd2_p1909.html

Tsury · Jul 15, 2012

tigger-gg said:
If the main flex cable is not connected to the main board, loudspeaker sound and vibration do not work.
http://www.ifixit.com/Guide/Installing-HTC-HD2-PB81120-Logic-Board/5919/8

---------- Post added at 08:35 PM ---------- Previous post was at 08:28 PM ----------

Also be sure that the flex cable of volume rocker is not broken.

---------- Post added at 08:45 PM ---------- Previous post was at 08:35 PM ----------

You could buy new ones, e.g.:
http://www.chinagadgetland.com/htc-desire-hd2-volume-button-contact-chiporiginal-p-10004635.html
or
http://www.enjoyapples.com/volume-button-contact-chip-for-htc-desire-hd2_p1909.html

I guess I should buy a new flex first?

tigger-gg · Jul 15, 2012

Open your HD2 again and connect the main flex cable on the main board. And dont forgett to unlock the tastatur flex cabel. I have forgotten it twice :crying: it tears very easily.
Have you edit your last post? First you have written that the sound and vibration also do not work.

Tsury · Jul 15, 2012

tigger-gg said:
Open your HD2 again and connect the main flex cable on the main board. And dont forgett to unlock the tastatur flex cabel. I have forgotten it twice :crying: it tears very easily.
Have you edit your last post? First you have written that the sound and vibration also do not work.

Yes, I edited it and forgot to re-add it!
My vibration and speaker indeed doesn't work.

Tsury · Jul 15, 2012

tigger-gg said:
Open your HD2 again and connect the main flex cable on the main board. And dont forgett to unlock the tastatur flex cabel. I have forgotten it twice :crying: it tears very easily.
Have you edit your last post? First you have written that the sound and vibration also do not work.

What is the minimum I need to tear down in order to check it?
There are too many steps in this guide (remove vibrator/gps/bluetooth/camera).

tigger-gg · Jul 15, 2012

You have to do all steps (1-22) of this giude http://www.ifixit.com/Guide/Installing-HTC-HD2-PB81120-Logic-Board/5919/1

Tsury · Jul 15, 2012

tigger-gg said:
You have to do all steps (1-22) of this giude http://www.ifixit.com/Guide/Installing-HTC-HD2-PB81120-Logic-Board/5919/1

What do I do with the big battery sticker in step 17? Just throw it away?

tigger-gg · Jul 15, 2012

No, dont throw it away. You have to put it back when you assemble your device.
Maybe this will help you too:
http://pocketnow.com/hardware-1/off...-training-videos-leaked?wpmp_switcher=desktop

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Volume rocker not working, what is wrong? [pics attached]

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