My sony tv the look in black,but has audio, what is the problem?

Either the Standby voltage is missing or the main board is defective.

Repairing a TV set is actually a skilled work. If you're not sound in electronics, make sure, that you can't do it; especially to Sony sets. If the set switches ON; with audio output OK, and there is no Video, surely the fault should be with its horizontal scan output section circuit. Check that circuit for fault. To get more details, http://electronicshelponline.blogspot.com/

replace the inverter board or power supply board

It could be as simple as your video cable going bad. Check to make sure the wire is in good shape and that the contacts and connections are secure.

I would say try using it with an HDMI cable (if possible) and see if the problem persists. You can also try and hook up another device (DVD player, camera, PS2, etc) to the TV input you are using now and see if it is the TV that is giving you trouble.

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To add an exterior speaker to Sony KV-13M10, you have to have an AMPLIFIER.

• At the back of your TV you will be able to see 3 RCA output namely = VHF/UHF, Audio and Video.
• Use an RCA cable and connect to the Audio output.
• At the back of your amplifier, connect the other end of the RCA cable to an RCA input labeled Audio - L (left, usually in white color).
• Your speaker should be connected to your amplifier labeled output or audio out. The connection type depends on the make and model of your amplifier. The speaker wires usually come in red and black color. red goes to red, black goes to white.

A simple diagram will look like this:

TV audio out -------------> amplifier audio in (left, white color) amplifier audio out (left, white color) -----------> speaker (black wire) amplifier audio out (right, red color) ------------> speaker (red wire)

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TV's are not your best source of audio. Get the TV-related audio digitally from the source, NOT the TV.

Sony sets have several protective circuits that blank the screen if something happens that might damage the picture tube. One of the more common causes is trouble in the vertical output circuit. Given the age of your TV (the XBR models have been around a while), this might also be a symptom of a picture tube starting to fail. Most of these sets have circuitry (called AKB) that adjusts the color drive signals to the picture tube to keep them balanced. If one of the colors is enough out of range the screen will blank. It might be the tube itself, or failure of some part in that AKB circuit. The set might also have defective parts in the input switching or video processing stages.

Unfortunately, I can't suggest any place you might look if you want to try repairing this on your own. This kind of trouble usually needs to be diagnosed and repaired by a professional TV technician who has the service information to track it down.

Hope this has been helpful. Thanks for using Fixya!

Go here for a detailed adjustment that may fix your problem

http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html

try to trouble shoot if the wire is the problem, how? remove the 3 colored wires from the tv and ps2 then try to use the red color instead of yellow to the video from tv and ps2 (both red) temporarily do not use the yellow color. once a picture appears use now the white for the audio (both white) for left audio once there is a sound you may try the yellow for the right audio. i hope this will help you and hear a positve reply from you.