I just tore down one of those cheapo netbooks for kids and salvaged a useless display out of it. I took that LED stripe out of it and thought that maybe I can convert it into a desk lamp or whatever. I connected it to am ATX PSU 5V rail and it didn't o jack shit. I connected it to the 12V rail and i lit up really bright but got hot. Is it supposed to get hot? What is the correct voltage for it?
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Re: LED backlight voltage?
Anything useful in here for you?
https://cdn.badcaps-static.com/pdfs/...5b3e53eac5.pdfPlease upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740 -
Re: LED backlight voltage?
My LED stripe is not an STMicro. It says JL-H070LED-IDW1. I googled it and there is no info about it.I can put text here?!Comment
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Re: LED backlight voltage?
Well this ad
http://www.aliexpress.com/item/Free-...787891737.html
suggests it is one of these AT070TN07-VA
Which is one of these?
http://www.panelook.com/AT070TN07%20...view_1534.html
There is a datasheet but you have to register looks like 10v might be about right?
try with a 9v battery?Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: LED backlight voltage?
I also read those, but they had nothing about LED voltage. I'll see if I can find a 9v battery.I can put text here?!Comment
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Re: LED backlight voltage?
Works with a 9v battery. Thanks.I can put text here?!Comment
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Re: LED backlight voltage?
What ever you do, you need to limit the current through the LED to about 20mA for most LED. So you should use current limiting resistor or power supply with constant current source.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Hi, I'm Daniel, and I'm new to the world of repairing motherboards.
I would like to create a table, or more likely a guideline about the voltage rails and their possible resistance rail.
I know that the motherboard design has a very big depend on the rail's resistance, but I would like to know what is the smallest value for a rail that can be acceptable. For example, I heard that some new gaming motherboards can have 0,5 Ohm resistance on the GPU rail, but on an older type, it could be a sign of a shorted GPU rail.
So, I generated a table with AI so I can... -
Back Story
I just recently purchased a RZ09-01652 Razer Blade 14 Touch v4(2016) as a project. I suspect the original motherboard had overheated and caused board damage to the vrm's for the CPU and GPU as now that motherboard works however will lockup on you often due to hardware clock issues.
So after some research and looking at options for replacement motherboards I got a replacement RZ09-01952 razer blade 14 motherboard which has the 1060 vs the 970m that was in my original motherboard. I have contacted the seller about the motherboard being bad however I doubt they will be... -
Hi. Recently serviced a damaged A1466 Macbook Air. Thought to post the issues and resolution for each.
Macbook AIR Model A1466 Diagnostic 09-01-2021
Issue: Liquid damaged (beer spill) Macbook AIR will not power up.
Problems & Resolutions
1) Attached Apple magsafe power adapter. No green / no orange light. This confirms the absence of the PP3V42_G3H voltage rail. The PP3V42_G3H rail is the primary voltage rail necessary to communicate with the magsafe power adapter to report the green or orange light status to the end user....09-01-2021, 09:31 AM -
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 everyone,
I have a strange problem (for me) on an MSI GT70 2PE laptop.
When it's under heavy load, power goes steadily to the battery (for 2 or 3 seconds) then return to the charger. If I remove the battery it turns off.
The higher the load, the lower the voltage on the main rail. We go from 19.5V, PC connected to the charger but turned off (normal consumption of 0.06A)
On, when it draws 2A the voltage is 19.2V, then eventually collapses to 18.5V (and turns off) around 5A.
I removed the first 2 mosfets (PQ13 & 14) from the main rail, without noticeable change....
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