Re: Vizio VL320M Component Level diagnostic ideas
I double checked readings on the large capacitor. Getting 170.5V with TV off and 167.6v with TV on.
Fixinmytv
Member
Last Activity: 12-02-2015, 02:44 PM
Joined: 10-22-2014
Location: fargo, nd
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Re: Vizio VL320M Component Level diagnostic ideas
I searched the board and didn't see the "IC821" I found C821 (Info printed on it "22J 1KV") and R821 (has "100" printed on it). I might be missing it, quite a few tiny numbers.
I found a more clear picture of bottom of power board on this site here, easier to read then my picture: [url]http://www.shopjimmy.com/vizio-0500-0407-0760-power-supply-unit.htm#[/url]
For the RED diodes-
I set my tester to Diode mode and check them with polarity going both ways. Top left one (D802)...Leave a comment:
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Re: Vizio VL320M Component Level diagnostic ideas
Top and bottom of power board pics....Leave a comment:
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Re: Vizio VL320M Component Level diagnostic ideas
Voltage on the big capacitor is 170vLeave a comment:
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Re: Vizio VL320M Component Level diagnostic ideas
Attached pic of power supply connectors. Attached picture with voltage readings of power connectors with TV OFF and TV ON.
Caleb - On board fuse appears ok....Leave a comment:
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Re: Vizio VL320M Component Level diagnostic ideas
The voltage regulators are labeled as "1117 Ɔ ¦¦ 9m f"
Not quite sure what each voltage regulator should show for input and output voltage.
How do I tell if it is supposed to be inputting or outputting 5v, 3.3v, 1.8v etc?Leave a comment:
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Vizio VL320M Component Level diagnostic ideas
I have a vizio VL320M, blank screen with no sound. When I try to turn it on the Vizio logo changes from amber to white, I can also turn it off, logo turns amber again. I'm not sure which component or board to replace. I'm open to ideas of what to test next.
I'm new to troubleshooting tv's. Read through some threads on the site and went through testing voltage regulators and came up with these voltages:
U2 Type 1117
2.032
3.267
5.067
U4 Type 1117
2.042
3.293
5.099
U5 Type 1117
1.32
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Re: New Members - please post your introductions here
Hello everyone, I've been working on computers, printers, networking, home theater for 15 years, a friend just came to me with a broken tv and i'm starting to enjoy TV repair more than I ever thought! Looking forward to meeting everyone and seeing how I can help.Leave a comment:
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