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Re: VIZIO TV (Model:VL370M) Display not working
Yeah I've noticed that too looks like VGH is half of what it should be for a working TCON board. It's interesting to see what you guys do to troubleshoot. I'm curious how come VGH is a problem why is the voltage lower than it should be?Comment
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Re: VIZIO TV (Model:VL370M) Display not working
I think vgh is created by a voltage doubler circuit. Maybe a shorted diode. I can't read the chip that generates the t-con voltages.I assume no responsibility for any stupid suggestions I might post.Comment
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Re: VIZIO TV (Model:VL370M) Display not working
Hm I see so it's one of those little metal pieces like C25, C76, C61 or that area around it that's shorted?Attached FilesComment
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Re: VIZIO TV (Model:VL370M) Display not working
C are capacitors. D are the diodesI assume no responsibility for any stupid suggestions I might post.Comment
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Re: VIZIO TV (Model:VL370M) Display not working
can check the caps meter in diode mode, probe on each end, shorted if continues to beep or reading close to 000, if one reads short remove and check off board, if it's ok off board then something else was making t read short.Comment
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I have dell 5490 la-f401p problem: no display ( in HDMI out working )
changed working bios ,working screen ,cable
Please help me to resolve the issue
i have more then 7 laptop's having the issue -
This specification for the LG Ultra Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Ultra boardview and Ultra schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for LG Ultra Notebook is accurate,...09-06-2024, 07:20 PM
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Dear collegues,
the owner of this machine brought it to me saying that suddenly one day the display didn't turn on anymore, he tought that all the machine was damaged but it turned out that the MacOS starts good and stays on, and that connecting it to an external display it works without problems.
If you take a look into general settings, you can also see that the internal retina display is recognized as connected by the main board but for an unknown reason it doesn't turn it on.
I've tried to put a bright light towards the screen but I can't see anything, any shadows or apple... -
Problem
This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached.... -
Most Displays I have worked with are of course LCD Or Blueish Fluorescent Types. I Have a Marantz PMD800 tuner with sort of a white display. The display area is a sealed rectangular shape in a Glass Case. Looks like some sort L.E.D. display only not your typical section number type. I picked up this Tuner cheap as the display is very Dim. In front of the circuit is a dull red Plastic lens.
The display is very week and hard to see. I've got my DC 5 Volts allover and also a DC 32 Volt that runs some other section. Power supply looks good front to back. Not familiar with this type...
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