Samsung LA37B530P7MXRD Tcon Test points?

[ROOBZ]

Hi, This is my first post. Reading through most...some...ok a few of the posts im amazed at the knowledge and time that alot of you put in and its given me the courage to go out and try to revive an old samsung LCD TV! the tv i got had the typical white/brightness with image outline. so i assumed from reading all the posts it was the AS15 chip. ordered some from Ali Express and waited...then after a month they turned up! As i dont have the tools or skills yet, i gave it to a friend who works as a Electronic Engineer to put the chip on to the board. but once i put it in and turned her on....the tv that is, it still has the washed out image?! so going off what you guys said about testing the voltages for the video gamma i proceed to check but found that the test points arent in numerical order? is this normal? the only points i could find i took readings from. these are as follows
VG1=15.2
VG2=14.96
VG3=NTP (NO TEST POINT)
VG4=12.31
VG5=NTP
VG6=10.64
VG7=NTP
VG8=9.95
VG9=NTP
VG10=7.87
VG11=7.62
VG12=6.69
VG13=6.93
VG14=NTP
VG15=4.81
VG16=NTP
VG17=4.19
VG18=NTP
VG19=2.89
VG20=NTP
VG21=0.52
VG22=0.29

VGMA=15.27
VGL =-6.11
V3D3 =3.31
VID2=1.2

Dont know what those last test points were for but thought it maybe of some help!
T-Con Board Number T370HW02 VC CTRL BD

unfortunately i didnt take readings before i pulled the T-Con out
just want to know if that VG13 being a little higher is what is affecting the gamma? may have been a bad brand new IC. or it could be slightly faulty contact.
thanks in advance! hope the photos are ok

[zomi]

Re: Samsung LA37B530P7MXRD Tcon Test points?

Either bad chip or bad solder job
some of the chinese ones can be duff

[ROOBZ]

Re: Samsung LA37B530P7MXRD Tcon Test points?

ok sweet, thanks! is the test points normally like this? ill need to learn to solder real fast then!! haha

[dick_barton]

Re: Samsung LA37B530P7MXRD Tcon Test points?

Can you check that you have no short circuit on some of those pins. It could just be the flux shining in your photo, between pins 24 -> pin 18.

[ROOBZ]

Re: Samsung LA37B530P7MXRD Tcon Test points?

thanks Mr Barton, ive taken another photo as im just using the mobile phone for the pics. i cant seem to focus any closer! haha but i think i got it?!

[ReeceyBurger123]

Re: Samsung LA37B530P7MXRD Tcon Test points?

Seems to be like failed AS15 Ic. I would say just go over your solder job again if that fails we will start further diagnoses.

[diif]

Re: Samsung LA37B530P7MXRD Tcon Test points?

The AS15 are quite sensitive to heat, also check for shorts between pins.

[ROOBZ]

Re: Samsung LA37B530P7MXRD Tcon Test points?

Awesome! thanks Reecey and Diif. ive pulled the board back out and will take it back around to my mates, as ive not got the balls to solder it myself just yet! haha will check it and maybe swap it out with another IC as well. thanks for the quick response!
will post back here if anyone needs me to take some measurements

[ROOBZ]

Re: Samsung LA37B530P7MXRD Tcon Test points?

another question if thats ok, is there a way to test the AS15 IC Before installing it? that way I would know which one is clapped out! thanks again

[dick_barton]

Re: Samsung LA37B530P7MXRD Tcon Test points?

thanks Mr Barton, ive taken another photo as im just using the mobile phone for the pics. i cant seem to focus any closer! haha but i think i got it?!

It is difficult to photograph but again the shiney bits, although not looking as bad as in the earlier photo, could still be flux or solder particles shining between the pins. Get the old magnifier glass out.