Re: Old Vizio E470VA, new problem
So if all four mainboard ICs are showing good, where should I look next? What would cause the On/Off of CN903 to read 0.11v?
Thanks,
Gary...
EMD_Driver
Member
Last Activity: 11-29-2017, 08:21 PM
Joined: 08-22-2017
Location: Walterboro, SC
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Re: Old Vizio E470VA, new problem
Sorry about that..
U608 is a 17809...Leave a comment:
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Re: Old Vizio E470VA, new problem
Guess I didn't hit enter hard enough..
U706M-153
1117-33
0.8
3.3
5.14
Should read:
U706
M-153
1117-33
0.8
3.3
5.14Leave a comment:
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Re: Old Vizio E470VA, new problem
I finally got to test the voltages on the ICs and here's what I got.. I checked each terminal twice, to be sure. I also attached two pictures of the ICs in question. I only found four on the board.
U103
M271
G9084
3.80
5.04
9.57
U608
17089
06 11
11.87
0.7
9.02
U704
M272
1117-18
0.8
1.794
3.301
U706M-153
1117-33
0.8
3.3
5.14
Hopefully, one of...Leave a comment:
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Re: Old Vizio E470VA, new problem
Thanks for the tip! I'll get those ICs checked and report back!
Gary...Leave a comment:
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Re: Old Vizio E470VA, new problem
I made a little 5 second video of what the TV is doing when powered on. Perhaps this will explain it a bit better than I could.
Gary...Leave a comment:
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Re: Old Vizio E470VA, new problem
I took the measurements both ways. With the PSU installed and on the bench, with the PS_ON jumpered. For the purpose of this post, I flipped the image and cropped it to highlight the connectors.
The upper connector is labeled: CN903
I will list the pins and the voltages obtained beside each one, while the board is installed and the power on.
24v - 24.32-24.34v fluctuating.
24v - 24.32v
24v - 24.32v
24v - 24.32v
24v - 24.32v
Gnd
Gnd
Gnd
Gnd
Gnd...Leave a comment:
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Re: Old Vizio E470VA, new problem
I'll be happy to get those measurements for you tomorrow.
One question..
Would I get the voltages you need with the PSU out of the set and the PSON jumpered to one of the 5v terminals, or should the readings be taken with everything hooked up?
GaryLeave a comment:
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Old Vizio E470VA, new problem
Hello everyone,
I did a job for someone and she gave me a Vizio E470VA. She said lightning had struck and the TV no longer worked. Before throwing it away, I decided to test it and see what I could find.
When the set is plugged in, the word Vizio below the screen lights up. It will then go off again. I can turn the set on with the remote, but I can see the entire screen flashing. It will go light and immediately dark. The flashing is very rhythmic and alternates about every second. I did an extensive search and could find no similar conditions. Also, while the screen...Last edited by EMD_Driver; 08-22-2017, 02:57 PM. -
Re: New Members - please post your introductions here
Hey all!
I'm Gary and I've been in IT for over 20 years. I didn't even know about this forum, until google pointed it out to me during a search. I have some questions and I'll be posting them, as soon as my restriction is lifted!
Have a good day!Leave a comment:
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