Magical way of testing T-Con boards??!!?? - what kind of sorcery is this???

[KYBOSH]

Please give me your opinion on this test method.
i have never seen anything like it but want to give it a shot ASAP!

[KYBOSH]

In the comment section the guy says "Removed a coil from the Power Supply and solder an LED bid on to both legs of coil"

nothing by way of specs unfortunately

[Davi.p]

the test coil captures a portion of oscillating current from the board coils, maybe the used led has an integrated resistor, it's a short way to test if the converter is ON or OFF, without searching the test points, the rest is a common issue of bad cap, when a coil is OFF other ones are too, size of coil does not much matter , the important is the limiting resistor for the led, you can use visually a similar coil of the video, try different ones..

[Diah]

he wrote to save time,,, but if we check if there 12V on Fuse of t-CON we go straight to disconnect one half then U ribbon to have 3/4 display.
magnetic coil with LED here work same as wireless charging.. LED < 1.5V like the one RGB one or standby LED , so why this circus needed !!

[KYBOSH]

I am hoping that this can tell me if a T-Con is actually working and active. Testing for power at the fuse or on the rails is one thing but i think he placed tbe coils over the Chips/BGAs to show that they were actively processing signal (ie current flowing through them) even though nothing was showing on the display.

Many T-Cons do not have status LEDs on them so there is no way to know if they are functioning or not unless the TV throws a blinking code.

i have a Sony TV which i have been trying to fix for months. I have sound and everything but no display. Its either the TV or the display and there is no way to know for sure except by process of elimination. I had to order a replacement T-Con bcos there was no other way to know if the original is good or bad.

i would love it if this little trick could help verify this one way or another!

Do you think this would be a good tool for this?? Given that removing FCC cables on sonys dont really work in troubleshooting like they do in other brands.

[Diah]

not on Chips or BGA.. this used only on Filter coil, because these coil will produce magnetic Field Strength, at the end its useless

[KYBOSH]

not on Chips or BGA.. this used only on Filter coil, because these coil will produce magnetic Field Strength, at the end its useless

Oh i see. I assumed chips produced a field strong enough for this little tool.
still an interesting tool/trick and i'll try to make one to see if incannfind any real world use for it.