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Jmccustoms
Joined: 22 Feb 2010
Posts: 6
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 Posted: Wed Feb 24, 2010 4:21 pm Post subject: L32hdtv10a picture |
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| ok, I have the l32hdtv10a and replaced power supply and green/yellow light comes on and off but no picture, what can i check to see if its the backlight board? Im getting 23 volts to backlight board and through the fuses but im sure there is a command circuit or wire to tell the backlight board to come on, there is three wires with the 4red and 4 black wire plug. can anyone tell me how to check and see if that circuit is telling it to come on or not? if its this board i can get it to work for another 60 bucks but dont want to buy it and it not be it, any help would be greatly appreciated........... |
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Justmanuals
Joined: 21 Aug 2004
Posts: 1948
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train123
Joined: 26 Jan 2010
Posts: 88
Location: Canada
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| Posted: Wed Feb 24, 2010 9:06 pm Post subject: |
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| With the set turned on, you should be able to shine a flashlight onto the screen from the front and see enough of the picture to know if that part is working. If you don't see any picture, you have more problems than just the back light. |
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Jmccustoms
Joined: 22 Feb 2010
Posts: 6
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| Posted: Wed Feb 24, 2010 9:38 pm Post subject: |
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| ok i did that and I saw the word volume while i was turning it up and down, so does that mean its the backlight inverter board? |
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jts1957
Joined: 24 Nov 2008
Posts: 2476
Location: Far, Far Away
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| Posted: Wed Feb 24, 2010 11:17 pm Post subject: |
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Or bad power supply, or bad CCFL bulb(s) or no enable signal. 
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minnie
Joined: 18 Aug 2005
Posts: 2880
Location: Hell
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| Posted: Thu Feb 25, 2010 2:56 am Post subject: |
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| If you have 12/24 volts to the inverters I'd suspect inverter. |
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Jmccustoms
Joined: 22 Feb 2010
Posts: 6
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| Posted: Tue Mar 16, 2010 12:57 pm Post subject: |
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| ok one more question, I checked power coming into inverter board and I have 4 volts standing on one wire, 3 volts when turned on and the other is ground. I also have 24 volts coming into board on red wires and grounds on black. the three wires are brown, orange and black, those three are the ones im getting the switch power to, so the inverter board is getting signal but not turning on the board correct??? and do you know who I can get the inverter board from? the numbers on the board are CPT 320WA01C rev 01. and I have a power supply board that was bad but I couldnt find any burnt spot on it (i replaced the power board)is this board worth anything to anyone as a reparable board and could I get anything for it? Thanks for all your help |
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jts1957
Joined: 24 Nov 2008
Posts: 2476
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| Posted: Tue Mar 16, 2010 6:06 pm Post subject: |
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One of the wires going to the inverter board should be going high/low each time the POWER button is cycled "on/off."
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Jmccustoms
Joined: 22 Feb 2010
Posts: 6
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| Posted: Tue Mar 16, 2010 6:24 pm Post subject: |
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| what is considered high? and what is considered low? i have 4 volts on one wire,and 3 volts on the other when turned on. from the new power supply |
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jts1957
Joined: 24 Nov 2008
Posts: 2476
Location: Far, Far Away
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| Posted: Tue Mar 16, 2010 7:34 pm Post subject: |
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Well if a wire has zero volts on it with the unit in the "off" state, then the power button is pressed and it becomes, say 3.86 volts in the "on" state, AND it reliably repeats this pattern each cycling of the power switch, then the "enable" voltage is present. 
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