Re: Transistor for TV problems
same part number, but it does not need to be the same maker.
so an AZ1117-3.3 could be swapped for an LM1117-3.3 for example.
if it's a 1117 you just need to match the voltage.
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Re: Transistor for TV problems
yes,
3 pins usually.
one is the input, one is output and one is either ground, or goes through resistors to set the output voltage.
go download a datasheet for a 1117 regulator.
https://duckduckgo.com/?q=1117+datas...t-wt&kv=1&kh=1Leave a comment:
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Re: Transistor for TV problems
Yes, there are regulator ICs on the main board.
Your TV has more than one versions so I do not know exact one that you have, they are not cheap.
http://www.shopjimmy.com/catalogsear...q=Vizio+E470VLLeave a comment:
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Re: Transistor for TV problems
My personal experience on almost every Vizio main board from this era is as follows:
If the screen lights up briefly with the vizio logo then freezes, the eeprom usually fixes it. If there is no backlight as you've describes but the logo changes color, then 95% + of the time it's going to be one or more bad voltage regulators.Leave a comment:
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Re: Transistor for TV problems
I am not sure if this EEPROM problem or not, look at shopjimmy website to see.
The metal shield is for the main processor.Leave a comment:
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Re: Transistor for TV problems
Can a eeprom fix this issue? And what's under that metal rectangle in the middle of the main board?Leave a comment:
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Re: Transistor for TV problems
OK, then the problem is on the main board and will require more troubleshooting.Leave a comment:
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Re: Transistor for TV problems
Yes the TV was on when I did the readings. Here's the picsAttached FilesLeave a comment:
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Re: Transistor for TV problems
It is not showing as shorted circuit, using Ohm meter can only do so much for testing the MOSFET, but this MOSFET has nothing to do with what the TV is doing right now, it is the main board that is not sending the signals to turn on the power supply board and the inverter board but we need to know if those Voltage readings are made with the power switch is activated or not, that is VERY IMPORTANT info I need to know.Last edited by budm; 05-14-2015, 09:19 PM.Leave a comment:
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Re: Transistor for TV problems
Are these readings with the power switch activated? If it is activated, then the main board is the problem.
https://www.badcaps.net/forum/attach...7&d=1431658037
We will need good clear pictures of the whole back side of the TV to see all the boards.Last edited by budm; 05-14-2015, 08:57 PM.Leave a comment:
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Re: Transistor for TV problems
Yeah, no picture and no back light, I tried the flashlight test I didn't see anything. Here's the picturesAttached FilesLeave a comment:
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