Re: Olevia 242FHD-T11 no picture, but has sound
So you think it could be the main board or Tconn board ? I take it there is know way to check either one to see if they are the problem or not with out replacing them?
jeepitbull
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Last Activity: 08-30-2011, 01:29 PM
Joined: 08-10-2011
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Re: Olevia 242FHD-T11 no picture, but has sound
We tried the darkroom test a few times now and know flash our light what so ever . I would try the old power supply but I don't think it will even turn the TV on any more that's the reason it was replaced . I have also replaced the TV with two new power supplies cause I thought that was the problem the first time I put the new power supply in , so like I said I replaced it with a new power supply and got same results and all the voltages to the inverters read good . So now I am not sure where to check next for the problem , any other...Leave a comment:
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Re: Olevia 242FHD-T11 no picture, but has sound
I have a brand new power supply so it's not that. I'm confused though-I thought the transisters should be over 100 ohms but ours was reading 8.3 (on the 200k ohms setting).
The power to the inverters is good and there is absolutely no flashes from the backlights.
Could it be the main board?Leave a comment:
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Re: Olevia 242FHD-T11 no picture, but has sound
We set it to 200 Ohms, and when we tested the transistors we didn't get a reading. We then switched it to 200k Ohms and we got a reading of 8.3 on each transistor. What does that mean? The fuses tested fine.Leave a comment:
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Re: Olevia 242FHD-T11 no picture, but has sound
Thank you for the diagram. To me, the fuses don't appear to have any damage. Is there a way to test them? There doesn't appear to be any damage on the IC. This is our first time dealing with anything like this so could you please tell me how to check for shorts on the transistors?Leave a comment:
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Re: Olevia 242FHD-T11 no picture, but has sound
With the power on, the on/off on the master goes up to 4.95 and stays there. The brightness on the master goes up to 3.30 for about 5 seconds and then drops and stays at 1.88. The power stays at 24.0.
On the slave inverter, the on/off stays at 4.95, the brightness stays at 1.88, and the power stays at 24.0.
The remote works to turn the TV on and off but I can't say whether it changes channels since I have no picture.
Does that mean it could be the slave inverter since the values stay?...Leave a comment:
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Re: Olevia 242FHD-T11 no picture, but has sound
This is the one on the left side (if looking at the back). So the one on the right side would be the slave inverter? If so everything on that one looks fine too (no bulging or leaking caps)Leave a comment:
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Re: Olevia 242FHD-T11 no picture, but has sound
Here's the picture....Leave a comment:
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Re: Olevia 242FHD-T11 no picture, but has sound
First off, thanks for your quick reply!
We checked the voltage coming off the power supply on the blue wire going to the backlights (we read this somewhere) and it was reading 4.95. On the new power supply we got today it was also 4.95. My husband doesn't know if that's the right wire to check or not. How exactly do we test the wires to make sure we are getting the correct reading. As you can tell, we are not experts on this but we are learning fast!Leave a comment:
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Re: Olevia 242FHD-T11 no picture, but has sound
No, we don't see any backlights coming on. When we hooked it up to the cable, I could make out the writing on the top of the tv (MSNBC). The thing I don't understand is that our picture was coming in perfect, we just had a power problem. Now we have the power problem fixed and we have no picture. There aren't any bad caps on the backlight inverter boards.Leave a comment:
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Olevia 242FHD-T11 no picture, but has sound
When I first started having problems I would have to turn the TV off and on about 4 times in order to get sound. Then it started taking a few tries to turn it on. When it's in standby mode a blue light is on. As soon as you hit power the blue light will go off. It was getting to the point where I would have to unplug/replug it into the wall several times before I could even get the blue light to come back on. When it would finally come back on, I would press power and the blue light would go off but nothing else happened. I did some research and heard it could be a bad power supply. I ordered...
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