Re: Olevia 242-T11 No Picture no Sound No back lights
Which components should i be checking for problems in tne T Con board?
Chuda33
Member
Last Activity: 11-17-2012, 10:25 AM
Joined: 11-10-2012
Location: Napa, California
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Re: Olevia 242-T11 No Picture no Sound No back lights
first of all thank you for your help. I went ahead and check the T Con. I see that there is voltage going through, but only about 9 volts. Is this right or not
ThanksLeave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
I am Willing to go as far as you guys are willing to help me.
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Re: Olevia 242-T11 No Picture no Sound No back lights
Is there a way to get the schematics of both of these boards?
I think that way we would be able to better trace the problem.
Thanks.Leave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
I have done that and the problem remains. The back lights do not turn on just with the resistor in Place, however, by using a different wire and feeding 5 volts to the Blue wire, the light do come on.Leave a comment:
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Dear Bill, I need your help. I read a post where you were helping someone with the problems they were having with an Olevia TV. I also have similar problems with same brand TV. I have some questions that I feel you might have the answer. Can you please do me a favor and read my post title. "Olevia 242-T11 No Picture, No sound, No Back Lights. I hope you have the time to help me out.
Sincerely, Chuda33 -
Re: Olevia 242-T11 No Picture no Sound No back lights
With the wire removed from the socket and the 1K resistor connected to the PS_ON pin I read 3.2634 volts. once I connect the wire in the socket again, I get 1.8147 again. What does that mean? can you also tell me how much voltage should be going to the T CON board? Sorry that I am asking so many questions, but I am really new at this.
ThanksLeave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
From which side of the socket should I remove the wire firs. From the PSU or the Main Board?Leave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
Budm, I am sorry, Can you explain that again, because I am having trouble understanding?
ThanksLeave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
Hey guys,
Do you know where I can get Replacement board for this TV. Everyone seems to be out of stock?Leave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
so, do you think that is definitely the main board or what?Leave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
Here is the reading I am getting on PS_ON:
1.8147 V. Could this be the problem?Leave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
What do you think is causing that the TV can be turned OFF after it was turned ON?Leave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
Can some one tell me what are the voltage readings that I should be getting at each of the power supply outputs
ThanksLeave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
Should I at this point discard the Power supply and the T Con as being the source of the problem, or is there any more troubleshooting that I can do that would help me narrow down the problem.
thanksLeave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
Sorry, here are the readings for U5:
U5 Model# 1084
Pin1 = 2.0637
Pin2 = 3.3163
Pin3 = 5.086Leave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
What do you suggest I do next. I think that the problem is that I am not getting any voltage in the blue wire corresponding to the B 0n out of the power supply. Should I replace the capacitors in the power supply. They don't look damaged, but I have also read that sometimes they don't show damaged but they are shorted internally.
can you tell me which component should be supplying the power to the following Pins, and what the normal output should be.
Blue Wire B On
Yellow Wire BRI
Brown wire...Leave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
Hello everyone. I was out, but I am back. I want to thank everyone for all your help.
Here are the readings I took from each of the voltage regulators:
U18 Model# 1084
Pin 1 = 2.0509
Pin 2 = 3.2976
Pin 3 = 4.9340
U48 Model# 1084 ( Adjustable, I think)
Pin1 = 0.0275
Pin2 = 1.2804
Pin3 = 3.3220
U10 Model# 1084 (Adjustable, I think)
Pin1 = 0.2509
Pin2 = 1.5032
Pin3 = 3.3215
U9 Model#1084...Leave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
Thank you all. I will take better pictures of the boards and post them later today. About the regulators, I have tested them and they all seem to be OK. but I will test them again. Do you think that this might be the reason why I don't get voltage in the B On, and BRI Pins of the CNS1 of the power supply.
ThanksLeave a comment:
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Re: Olevia 242-T11 No Picture no Sound No back lights
Yes, I checked all connections.
One more thing, using a jumper wire, I was able to feed five volts to the blue wire and guess what, the back lights turned on. However there is sort of a busing noise coming from one of the inverter boards, the Slave to be more specific. I don't know if it is because the voltage is to high, or the current, or simple is the wrong voltage that should be coming from this out put. In any case, I think that this discards the Inverter boards being the problem.
Thanks for your he...Leave a comment:
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