Samsung LCD LN40AQ550P3FXZA Solarization Issue

[noledud]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

Talking of replacing boards - I always repair and replace AS15 / AS19 chips because my theory is at least you know its 100% working with no compatibility issues.

for those that cant replace the chips there are services on ebay for TCON repair here in the UK so imagine other countries have people offering similar services.

[jm442123]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

A big thanks to everyone who contributed thoughts on my solorization issue!

I am especially grate full for those of you that helped me understand the relationship of the Gama test points readings and what reading make for a good T-con board and what reading make for a bad T-con board.

Jim

[nomoresonys]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

Also not as difficult as some make it, nothing is likely to magically change in service menu all by itself, if the history of tv is unknown then who knows what's been done to it, anyway here's that setting simply explained, just follow instructions AND do as Bud said and make note/write down setting before messing with it. Maybe you should watch it 5 times before starting: https://www.youtube.com/watch?v=c-aXKCTiU6I

[Diah]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

because there are no standard definition of words and code used by SM on all brands. its difficult and risky too to play at SM. user can change only some function if being blocked from brand company such PVR time shift. smart 3D, or DTS etc. other values of certain Options could let the set never wake up again after restart.

i advice you just search under Option like advanced or expert any of Reset Option first. to delete profile setting. and reload driver to factory state. any option you see that unclear to you just upload here photo of it.. may other member can understand it and help. to me i am hater of Samsung SM.

[budm]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

OP, what ever you do in that service menu, make sure to write down the numbers before making any changes.

[Diah]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

the white color bold option such White balance / W/B Movie EPA Standard .... etc.. you can confirm them they changed too at log on the right side down on your SM page under EDID SUCCESS and the option listed by code like 0511 2111 ..... etc

[jm442123]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

Diah,

I do not understand your observation from the photo I provided of the Service Menu settings.

You state "some one played and edit 7 Options Value."

Are you indicating there is an incorrect setting on one of Service Menu settings?

Could you please clarify? Thanks.

Jim

[Diah]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

Hi all. Any help would be greatly appreciated.
Jim

https://www.badcaps.net/forum/attach...9&d=1566057229

from this OP Photo of SM data log there some one played and edit 7 Options Value !!!
and the skin of the women at background to me was normal not burned with wrong gamma !!!

[nomoresonys]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

Thanks for the opinion that it is a bad T-Con board because of the bad Gama IC, but what leads you to that conclusion based on the test point data? Just curious.

Already gave you that diagnoses 8 posts ago but don't forget to thank diff-boy.

[nomoresonys]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

lin·e·ar
/ˈlinēər/
Learn to pronounce
adjective
adjective: linear

1.
arranged in or extending along a straight or nearly straight line.
"linear movement"
consisting of or predominantly formed using lines or outlines.
"simple linear designs"
involving one dimension only.
"linear elasticity"
Mathematics
able to be represented by a straight line on a graph; involving or exhibiting directly proportional change in two related quantities.
"linear functions"
2.
progressing from one stage to another in a single series of steps; sequential.
"a linear narrative"

Origin

[nomoresonys]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

Did you read post 4?? On your chart you're ok 1 thru 9 then it goes up, which is bad. Not rocket science.

[budm]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

T-CON check spreadsheet by Tom66:
https://www.badcaps.net/forum/showth...&highlight=VGH

[R_J]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

This is a rough graph of you voltages, its not that bad but your picture is not that bad. If more of the voltages were off your picture would look a lot worse.

[jm442123]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

Yes. I ordered a "new" T-con board on ebay for $28.22. It looked like the Gama IC was about $12. At those prices I would just a well go with a whole new T-con board. I am hoping it is a good T-con board.

Diff .... So a good board would have a downward slope of the voltages from TP1 to TP17. Is that correct? Thanks for all of your help.

Jim

[nomoresonys]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

.

[nomoresonys]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

.

[diif]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

Thanks for the opinion that it is a bad T-Con board because of the bad Gama IC, but what leads you to that conclusion based on the test point data? Just curious.

A non faulty one produces a linear graph when plotted.

[jm442123]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

Thanks for the opinion that it is a bad T-Con board because of the bad Gama IC, but what leads you to that conclusion based on the test point data? Just curious.

[diif]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

Looks like AS19-H1G

You're right, I didn't zoom in on the photo.

[neilc6]

Re: Samsung LCD LN40AQ550P3FXZA Solarization Issue

Your tcon part number is 35-D026047. Lots on ebay. I have gotten damaged and non-working used tcons on ebay so it's a bit of a crap shoot unless you can find a new one. I find 10 yr old obsolete LCD TVs are getting less worth it to repair. TV is only worth about $80 working.