Re: Vizio E550VL Black Screen/PSU
I got rid of the TV, decided to by new one.
msrods
Member
Last Activity: 06-22-2015, 03:02 PM
Joined: 04-03-2015
Location: Celeste, Tx
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Re: Vizio E550VL Black Screen/PSU
It is @C801A 398V at PS-ON and drops to 167V in less than a second....Leave a comment:
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Re: Vizio E550VL Black Screen/PSU
I guess I am going to assume that the Power Board is bad since I can get no readings of 18 or 12 VDC.Leave a comment:
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Re: Vizio E550VL Black Screen/PSU
Went back and rechecked the voltages on CN201 and CN204 using the ground pins on both connecters and I do not have 18 VDC or 12VDC PS-ON is 2.85 and the 5 VDC is 5.03.Leave a comment:
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Re: Vizio E550VL Black Screen/PSU
My post should have said HS3 and HS5 instead of H53 and H55Leave a comment:
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Re: Vizio E550VL Black Screen/PSU
Using pin 1 and pin 7 (black probe) I get no voltage at all. Testing on the secondary voltage side. If I use H55 on secondary side for ground point I get 0 VDC, if I use H53 on primary side for ground I get 20.11VDC.Leave a comment:
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Re: Vizio E550VL Black Screen/PSU
Don't know if this maters or not, but depending on where I put the ground clip the voltages vary by 4VDC and if I use the sig gnd for the grounds I get no voltage same with the GP1 on the board.Leave a comment:
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Re: Vizio E550VL Black Screen/PSU
First off I will stay with this until the problem is solved. I will pull the board and turn it over and check the voltages as indicated on the traced picture. I have been checking all the voltages one the front side at the pins. Maybe I am missing something. Have a Happy Easter.Leave a comment:
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Re: Vizio E550VL Black Screen/PSU
PS is 2.88 The next 3 which should be 12VDC are 13VDC and the bottom 3 which should be 5VDC are 5.04VDCLeave a comment:
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Re: Vizio E550VL Black Screen/PSU
How do I check that?Leave a comment:
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Re: Vizio E550VL Black Screen/PSU
It goes to 397 then drops back to 169.Leave a comment:
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Re: Vizio E550VL Black Screen/PSU
Voltage is 168 DVCLeave a comment:
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Re: Vizio E550VL Black Screen/PSU
As per request here are the pictures....Leave a comment:
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Re: Vizio E550VL Black Screen/PSU
No it does not. It falls off slowly to 4 VDC and holds there. BTW If someone can tell me how to post the pictures I will.Leave a comment:
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Vizio E550VL Black Screen/PSU
I have replaced the T-Con and mainboard and nothing but when I look at the PSU resistors R304,305 and 308 only read 28 Ohm. They are marked 68 Ohm. Back of the PSU at resistors location is yellow compared to the rest of board. Is it possible why all I am getting at the 24VDC pins for the master and slave only 8 VDC. I am a novice so any help would be greatly appreciated. -
Re: New Members - please post your introductions here
Hello been working on a Vizio E550VL and am looking for some help. From the threads I have read this seems to be the right place. I am just doing this for my enjoyment.Leave a comment:
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