Question about Toshiba 43AX60 43" Rear Projection Television

Sound but no picture

When the TV is turned on we can hear the program on TV but there is no picture....just black. Toshiba Chassis# TAC9859

2 more comments
Tamara Lansinger Aug 01, 2007

Model # TP43H60 Model # TP43H60
Tamara Lansinger Aug 12, 2007

Can you give me some idea as to where these problems maybe located and what they look like. I want to make certain that I have the right piece that I am looking at.
Tamara Lansinger Aug 14, 2007

Looking for a little more detailed help please.
Tamara Lansinger Sep 05, 2007

I've already got a multimeter and soldering iron just waiting for the service manual to arrive.
Thanks for checking up.

2 Answers

Anonymous

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556 Answers

When the TV is turned on we can hear the program on TV but there is no picture....just black. Toshiba Chassis# TAC9859 very simple as you hear program means sound is ok can you see light? if light is there & sound is there ypur problem in video or luminance section unless you know tv tech please do not open the set. please let me know .

Posted on Sep 14, 2007

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3,130 Answers

This could be a problem in the vertical sweep circuit, as when the vertical circuit fails, The video or screen will blank out so the picture tubes do not get damaged. In this chassis, I have seen the convergence IC's cause this, or the capacitor in the sweep power supply that feeds the voltage to the vertical IC has failed and blew out the vertical output IC. If you have no solid state repair experience, play it safe and call in a trained tech to assist you in this repair. Good Luck.

Posted on Aug 12, 2007

2 more comments
Anonymous Aug 13, 2007

You will need to get the service manual first. But if you do not understand how to read a schemaric, or a circuit diagram, it will be waiste of money
Anonymous Aug 18, 2007

Like I said before my friend, you will need to get a service manual and see where you are losing the video. It most likely will be in the protection circuit, so when the vertical sweep goes out or the vertical convergence goes out, it does not damage the picture tubes. Do you have a multimeter we can use and trace voltages with? If so and you can follow a schematic diagram, get the manual and maybe I can guide you through the circuit and see whats happening to the video.
Anonymous Sep 04, 2007

You need to buy a service manual first to trace out the circuit flow. We simply cannot tell you or guide you blindly without knowing what is in the circuit, and all sets are different. You will have to spend a little to fix this TV set I'm afraid. You will also need a multimeter, a soldering iron, and a knowledge of how the knowledge to use them. There is I'm afraid no magic fix to fix this TV set.
Anonymous Sep 05, 2007

When you get the service manual, let me know.

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