HTC BOLT BLACK SCREEN - HTC Cell Phones

sounds like bad connection to backlight of phone.

See this videos:

• htc one sv repair fix 2
• HTC One SV C525E LCD Touch Screen Repair Daz

Yes, You can purchase a replacement screen for the Htc mytouch 4G here of of ebay or elsewhre on the internenrt Touch Screen Digitizer Glass Replacement for Mobile HTC MyTouch 4G...

I solved this problem few times by completely opening my HTC Desire Z mobile phone and then reassembling it. Third time, I noticed that the problem is due to looseness of two, out of three, tiny screws at the "camera" button of the mobile set. Therefore, mobile set was not properly pressed and sealed at the "Camera" button and due to some protection by HTC, screen went black. Now I have used new relatively long tiny screws and the problem is solved permanently.

seems like hardware issue.
I had the same problem.
opened up the phone , pulled out the camera and put it back in,
restart... and voila!! it works!

your phone have screen problem. you must change your screen or any hardware parts. pls chek your phone in htc's company shope.

my htc cell phone touch screen does not work all a sudden

is there the "calendar" and "contacts" menu buttons on the bottom of the black screen?

that's what would happen to me. i just turned off the touchFLO 3D on the today screen (by going to settings, then today screen options) and it seems to not go black anymore... even after being untouched for hours.

not sure if the same thing is happening to you, but it worked for me.

Follow the video guide at the following link and you can repair you lcd screen on the htc touch

How to repair HTC Touch LCD Screen

the touch scren not workin i can't see or do nothing on it wat should i do