I have a neighbor who brought me this TV to see if I can repair it for him. When the TV is plugged in you get a red power light, when you press the power on the TV or remote the light blinks, goes out, then back to solid red, there is nothing on the screen during this no logo, no sound, no backlight or anything. Took the back off and nothing jumps out to me capacitors all look good. Where would I start in diagnosing the problem? Thanks in advance!
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What Voltages do you have on this connector while the TV is plugged in but off?
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I don’t have my meter at home at the moment. I will get it and check those voltages.Comment
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Was given advice on a Facebook tv repair group that my problem was the main board, found a main board purchased and tv still does not function properly but has different symptoms than it originally had. When you plug in and power up the tv now the red power light goes out like normal and stays out as if the tv is on but I have no picture sound or backlight (no picture with a flashlight shined on the screen). If you try to power the tv down it will not power down you have to unplug it to power it down. I will get the voltages requested when I get the chance but just wanted to updateComment
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ok so finally got time to set aside to work on this TV I was remodeling a home and didn't have the time to look at this. I will list the voltage at each pin with tv plugged in but off, going from top to bottom or using the above photo right to left.
1. 0v
2. 0v
3. 49v
4. 48v
5. 0v
6. 0v
7. 29v
8. 29vComment
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I think its possible you only probed the top set of pins. There are 16 total. The top 8 are easy to get to via the pins going into the board. That said the 29V measurements should probably be 12V since that's what's marked...Also - pin 6 is the standby Voltage and while I am no expert I believe it should be higher than zero.Comment
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You are correct. I missed the other 8 I flipped the board over plugged it in and got the readings.
below in the same order are the other 8 readings.
1. 0v
2. 0v
3. 0v
4. 0v
5. 0v
6. 0v
7. 32v
8. 0v
the first readings were for the outside set of 8 pins these are the readings for the inside 8 pins. All with tv plugged in but powered off.Comment
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Anyone have any thoughts on this? Since I took a while to get the readings and get back to this thread I'll recap it in case anyone has any ideas. When you power Tv on red power light flashes goes out then right back to solid red like it is when the TV is off, I did by a replacement main board because of recommendations from another site and it was not the problem. TV still does not work with the new board. I was asked to get readings off the 16 pin connector from the photo above. Starting with the readings from top to bottom for the left column and going then top to bottom on the right column this is with the tv plugged in but power off.
1. 0v
2. 0v
3. 49v
4. 48v
5. 0v
6. 0v
7. 29v
8. 29v
1. 0v
2. 0v
3. 0v
4. 0v
5. 0v
6. 0v
7. 32v
8. 0vComment
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
Hi all!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
https://www.badcaps.net/forum/troubl...-hardware-devi... -
Hi all,
TL;DR - this laptop is driving me nuts with the oddball power-related behaviors. Appreciate any insight you can provide!
I'm experiencing a power issue on an Asus Probook P5440UF-XB74. Although I've worked with electronics and computers for decades, this is my first attempt at getting into motherboard-level component troubleshooting. Any help the community can provide is greatly appreciated!
A few weeks ago I was using the laptop (on battery power) for a Zoom meeting. The battery was running very low (long meeting) but I wasn't worried about... -
I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy... -
This specification for the HP Pavilion Power Pavilion Power 15-cb009nl 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 Pavilion Power 15-cb009nl boardview and Pavilion Power 15-cb009nl 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...09-06-2024, 05:59 AM
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