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Pete
Pete, Electronic Engineer
Category: TV
Satisfied Customers: 16333
Experience:  Over 16 years of experience installing and repairing electronics.
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My Sansui TV has sound but no picture, just a black scre

Resolved Question:

My
Sansui TV has sound but no picture, just a black screen.
Submitted: 5 years ago.
Category: TV
Expert:  Pete replied 5 years ago.

Electronics Pete :

Hello and welcome to JustAnswer! I am Pete, a TV expert, and I'm happy to assist with your question today.

Electronics Pete :

How long have you had your Sansui TV?

Electronics Pete :

If you press the menu button on the remote control, can you still see the on-screen menu?

JACUSTOMER-p3bhik67- :

We have had the TV not quite two years. The menu does not show up.

JACUSTOMER-p3bhik67- :

Sansui TV 325 is the model.

Electronics Pete :

There are three possible causes of this problem:

1. The power supply to the backlight inverter has failed.
Solution - the power supply circuitry inside your TV will need to be repaired or replaced.
Estimated cost: $150-200

2. The backlight inverter has failed.
Solution - the backlight inverter inside your TV will need to be repaired or replaced.
Estimated cost: $150-200

3. The backlight has failed.
If the backlight has failed, the cost of replacing it would be almost as much as a new TV set, so these repairs are not normally carried out.

Customer: Can you give me more info on what to look for on the back of the tv if it gives any indication of what it might be, when I look a the tv screen it is on but not showing and images and the light in the back is on
Electronics Pete :

Can you try shining a bright light on your TV screen in a dark room to see if you can make out the faint image of a picture?

Electronics Pete :

If you can see a faint image, then the backlight or its associated power supply circuitry has failed.

Electronics Pete :

If there is no picture visible, then the TV will require electronic testing to determine the exact cause of the fault.

Electronics Pete :

Faults are often found on the power supply board in these LCD sets.

Electronics Pete :

Things to look for are burnt brown hot spots on the circuit boards, capacitors with leaking/bulging top or seals. Loose wires and connectors, or blown fuses.

Pete and 2 other TV Specialists are ready to help you