LG49UH603v No image backlight on

[bohaboha]

at the end this IC my first time i saw it exploded , and its cant replaced with RAW one.

it exploded because I used bad means to verify if it was too hot (Candel Debris)
when i am going to replace it it has to be programmed ? in that case what do you need if you want to explain thanks it is on the way

[bohaboha]

TPS65175B
https://aliexpress.com/item/1005002713379080.html

Hi lotas I have ordered that IC ps65175 but it will take very long to get it home. you can't find an equivalent IC that might be easier to get hold of and, above all, faster

[bohaboha]

Hello again Lotas, Diah, EazyBone and everyone else who helped. Now this IC ps65175 is soon here and it must be programmed I think as Diah has said "it cant be replaced with RAW one" if so which program and programmer to use ? I have some that I have never used if you can explain I am very grateful

[bohaboha]

no one to help solve tis issue?

[Diah]

no one to help solve tis issue?

we helping the possible things..LOL
you ordered one from china i think... if you are lucky it will come fit as same parameters of yours.... Chinese have their black sources of chips ic to sell...LOL

[bohaboha]

Thank you Diah i know you are . but if its row ic how to do ?

[Diah]

Thank you Diah i know you are . but if its row ic how to do ?

raw one...i don't think so.. as Chinese sell what in black way... but if its indeed raw.. the TV will remain start... in_stop command to send for hard reset could write the temp in TV to the chip ... thought this theory only not tested just because this chip never saw in such condition

[bohaboha]

Now the ic ps65175 is in my hands and I don't dare to do anything until I know for sure if it's programmed or not, and how do you know? Of course, the easiest way is to try it on the circuit and see if it doesn't explode again but I prefer another way to avoid waiting 3 more weeks

[Diah]

Now the ic ps65175 is in my hands and I don't dare to do anything until I know for sure if it's programmed or not, and how do you know? Of course, the easiest way is to try it on the circuit and see if it doesn't explode again but I prefer another way to avoid waiting 3 more weeks

put it in circuit... it will not explode... , the one explode because you had before wrong / shorted LVDS

[bohaboha]

thanks so much Diah ok i shall do but i am not very confident

[Diah]

thanks so much Diah ok i shall do but i am not very confident

to tell the truth --- i am too not very confident, just because the explode happen by yours hand wrong... so how will you solder this one in place correctly..with out damaging the boards.... LOL however hope and wish you have enough soldering skill

[lotas]

First, remove this chip and check the resistance where it was low (short) before, first with the panel disconnected, then connect the panel and check again where the short is, if the short appears again when connecting, then the problem is in the panel or in the buffer strips.

[bohaboha]

Diah I'm practicing on the old circuit to be prepared when I put it in place but no don't be worried I'll manage to put it in place without hurting the rest you're funny you

[bohaboha]

First, remove this chip and check the resistance where it was low (short) before, first with the panel disconnected, then connect the panel and check again where the short is, if the short appears again when connecting, then the problem is in the panel or in the buffer strips.

Thank you so much lotas for your advice which I shall absolutely follow
Hope for even more support from all of you

[bohaboha]

Hello all a little update now the IC chip ps65175 is removed and it went as you can see quite well because I have practiced with old board that I have under hand . now comes the difficult part or maybe the easiest because as you see in the pictures the old IC looks like it has had tin balls in the middle how do you think should I go about this IC chip
Any tips are more than welcome.
It looks like Short is gone now

[lotas]

It looks like Short is gone now

The short circuits have disappeared, now connect the panel with the lvds cable and check again for short or low resistance (without this chip).

[bohaboha]

Ok thank you lotas will do and report .

[bohaboha]

it looks like it's ok no short but I'm a little doubtful about a capcitor don't know if it's ok the one closest removed chipset. can i measure it on the circuit?

[bohaboha]

Hi now I'm two steps away from repairing this TV, the first thing is to solder in place this ICIC7703 (TPS65175B) and need some advice before I start with it. As you can see in the pictures it has tin in the middle, lit needs a reballing ? I'm wondering how I should go about filling up those holes with tin? Or just put bak with just tin on the sticks all around? Any advice is welcome.
the other is the loose Ribbon that needs to be back in place but we may have to take this after the ic chip is fixed

[bohaboha]

This IC chip have to be reworked and i think it is best to use soldering's paste to rework it on board rather then using Mounting Solder Ball cause it is quite small area but no i think it is doable . any method will be ok. the problem here is the size of the solder ball or the paste that have to be used ? for this i need your help to guide me . very funny found myself already owner of this new station IRDA SMD & BGA REWORK STATION T-862++ that was in my storage room