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Ask Louie Your Own Question
Louie, Technician
Category: TV
Satisfied Customers: 2557
Experience:  25+ yrs. experience in the field and 5+ yrs. online, down to component level.
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Screen is black sound is on, un65hu7250f, no screen is black

Customer Question

screen is black sound is on
JA: What's the model number of your TV? How old is it?
Customer: un65hu7250f
JA: Does the TV menu work? Do you have the same problem on all sources/inputs?
Customer: no screen is black sound works
JA: How long has this been an issue? What happened right before this popped up?
Customer: today
JA: Anything else you want the TV expert to know before I connect you?
Customer: no
Submitted: 10 months ago.
Category: TV
Expert:  Louie replied 10 months ago.

Hi, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.

Initially, let's try review the basic checks; have you tried unplugging for an extended period of time? ...and then plugging back in into another outlet?

Customer: replied 10 months ago.
unplugged for a couple of hours
Expert:  Louie replied 10 months ago.

Appreciate the additional information on what has been tried.

Consider an experiment (if have not been done). Power on the TV and set to a program/channel. If at all possible, darken the room where the TV is. Wait for about 5 minutes or more. Shine a flashlight at an angle (not directly) and nearly but not touching the screen where the volume level / menu display is usually seen.

Press the VOL UP/DOWN or MENU button and note if a dark/ghostly image of the volume level or MENU could be seen.

Postback results.

The above is a test to determine if it is a backlighting issue.

Customer: replied 10 months ago.
no image seen
Expert:  Louie replied 10 months ago.

I understand.

Still and as it would be indicative of an internal hardware issue, are you then considering a DIY (do-it-yourself) repair approach?

If yes, do you have access to and familiar with a multi-meter (and even perhaps a soldering iron)?

Customer: replied 10 months ago.
there is faint light but no ghostly image
Customer: replied 10 months ago.
I am familiar with soldering iron and multimeter
Expert:  Louie replied 10 months ago.

Significant findings as it would then eliminate the backlighting system as a potential suspect. It would also appear that the power supply is functional to an extent.

...and great on the DIY!

This would then leave the T-COM board and/or the main board as the prime suspect(s).

Please post back with clear picture(s) of the inside/circuit boards. Click HERE.

Customer: replied 10 months ago.
Expert:  Louie replied 10 months ago.

Please post back with clear picture(s) of the inside/circuit boards. Click HERE with particular attention to the T-CON board and/or the main board.

Customer: replied 10 months ago.
the tv is on the wall and not interested in taking it down tonight
Expert:  Louie replied 10 months ago.

I understand; when able please.

Customer: replied 10 months ago.
thought there might be a different step as rebooting the tv
Expert:  Louie replied 10 months ago.

I realize that the above information may perhaps be not what was expected. Unfortunately, there is no quick-n-easy fix and neither is there a workaround; sorry for having to be the bearer of bad news.