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I have a sony Led digital Tv model KDL 32EX420 i have sound…

Customer Question
Hi i have a...

Hi i have a sony Led digital Tv model KDL 32EX420 i have sound and a black screen, why?

Technician's Assistant: What's the model number of your TV? How old is it?

KDL 32EX420 couple of years

Technician's Assistant: Does the TV menu work? Do you have the same problem on all sources/inputs?

The screen is black cant see any thing, but i get sound

Technician's Assistant: How long has this been an issue? What happened right before this popped up?

Nothing it was workinf fine then went to turn on and black screen

Submitted: 8 months ago.Category: TV
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Answered in 47 minutes by:
11/16/2017
TV Technician: Nathan, Installer replied 8 months ago
Nathan
Nathan, Installer
Category: TV
Satisfied Customers: 30,754
Experience: Custom home theater installer, authorized dealer top brands.
Verified

Hi, I'm Nathan.
Sorry to hear that you're having trouble, but I'll do my best to help you. Please give me a few moments to review and reply.

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TV Technician: Nathan, Installer replied 8 months ago

Unfortunately, the issues you are experiencing are symptomatic of an internal hardware defect, meaning a faulty power supply or backlight component, though there are many possible failure points. This issue could be a manufacturing defect, but is also often caused by a power event (shock/surge, prolonged over/under voltage condition, etc).

This could also be the result of age related wear and tear; as a 2011 model tv, that type of failure wouldn’t be surprising. This tv is already well past its service life.

There is one step you can take here, both as a possible fix, as well as a diagnostic evaluation:
1) Unplug the power cord from the outlet

2) Wait at least 1 hour (60+ Minutes)

3) Press and hold the power button (on the set, not the remote) for 60 seconds
4) Keep holding power button while plugging back in, and for another 60 seconds after. When plugging back in, go directly to the wall outlet, bypassing any power strips or surge protectors.

If this reset process does not work, it would unfortunately confirm an internal hardware failure.

This is something that would require repairs to correct; if you're thinking about a do it yourself repair, you'll need to be comfortable and skilled with electronics repairs, which could include dismantling the set (removing the back panel of the tv), diagnostics testing with a multimeter, changing out boards as needed, and possibly desoldering/removing and soldering/replacing individual components.

If you’re considering repair at a local shop, you’ll find a typical repair to be around $300 for diagnostics, parts, and labor.

For a tv of this size/age however, replacement will make more sense. You can get a brand new LED tv with a fresh warranty in the $200 range.

I can help you with finding parts, finding a repair shop, or recommending replacement options, if desired.

My apologies for the news,

Nathan

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Satisfied Customers: 30,754
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