Re: Lg 42LE4500 losing backlights
Awesome, thanks very much.
Trip to maplins coming up
Awesome, thanks very much.
Trip to maplins coming up
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Re: Lg 42LE4500 losing backlights
Ok took a trip to maplins and got a .06w 10k resistor.
Fitted it to pin 44 and put the set back together. The leds did nothing at all :-(
So I stripped her down to remove the resistor ready to clean things up for my new ic that I've ordered from China (will be here some time 2070 lol) and I broke the leg off the ic. Bugger but still not a problem as the pad was untouched as I'd dried the pin off.
Pics to followLast edited by Greasejunky; 12-01-2016, 08:07 AM.Comment
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Re: Lg 42LE4500 losing backlights
HI.
I'm with same problem. the mosfets are so hot and i replaced them but the symptom is the same.
i've disassembled panel to see led strip and they look fine to me.
Have you replaced that IC AS3693B? The problem has been solved?
Regards!Comment
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Hello, I'm a beginner for micro soldering. Right now I have some difficult to solder a qfn 20, I guess I put too much solder on the thermal-ground pad, the result is a corner of chip wich don't touch the board (last try).
I use a wire solder with hot air, I tin the board and chip before with iron and I use good flux.
I will have to solder a LVDS connector (40 pins, laptop pc), I saw a solder paste in seringe, good quality (it does not scatter).
See the test :
https://youtu.be/bNAzC-EvqHs?t=1767
With hot air from bellow the board, that's... -
Can someone recommend any good UV solder mask? But i need a solder mask that will stand high temperetures. The thing is...sometimes i have a bigger cooper ripped from the board, lets say mosfet pad... i reconstract it with cooper sheet, then i "glue it" with solder mask...then i use UV light...and let it cool a bit. After, i try to clean the cooper of extra solder mask..and till that part all is ok. But, when i use a soldering iron to solder that pad/cooper...the solder mask gets weaker or destroyed and finally the pad is ripped again from the board .
Is there any solder mask... -
So I though in my spare time I’d set myself up repairing motherboards mainly pin damaged lga1151 sockets types.
I’m using an achi ir sc pro rework station (gave up on my Achie ir6500 - don’t recommend)
I’ve managed to get my rework profile somewhere in the correct region (after a lot of trial and error) to get the old sockets off and reflow new ones back on again, the problems I’m getting is not all of the solder balls are re-attaching when re-flow occurs. I know this because when socket is removed pads still look clean and have no solder... -
Hello, I have a problem with my Samsung UE48H6410SSXZG with the main board BN41-02156A and the power board BN44-00709A. Everything seemed like this, the TV could no longer be switched on, the standby LED always flashed 5x2 times. Backlight was off and no sound from TV. Also made the flashlight test and there was no picture.
I made the following tests:
1. Disconnected the main board from Power Board = backlight works.
2. Connected the main board and disconnected the T-Con = backlights does not work.
So I ordered a main board from Ebay also BN41-02156A but from... -
'Morning,
I get sound and picture when powering on the TV and its stays that EXCEPT that the left half of the screen will dim every few seconds then return to normal while the right side of the screen performs as designed.
Did the soft and hard reset options pulling the plug, using the reet option in the vizio menu to no avail.
I checked the mainboard - found some popped capacitors so replaced it - but that did not change the situation.
I checked the t-con board. It is getting good power. Then I removed one ribbon cable to see if I could isolate...
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