Re: Late model "40 RCA LED LCD, upper 1/3 screen distortion, no T-Con board

Thanks for the tip, Davi.p.
I've tried this method, first STVP point that was cut caused the panel to not display anything, it has been restored, then the one adjacent to the other ribbon was cut, at which point the distortion changed from severely on the top 1/3 of the screen to even faint lines all over the screen, it was a little better but still visible and far from an ideal image.
Then something happened, the trace of the previous STVP point that I've cut and repaired has burned (I...

Re: Late model "40 RCA LED LCD, upper 1/3 screen distortion, no T-Con board

Thanks for your quick replies,
The panel doesn't have any side tabs or any visible chips...
I am attaching a few detailed photos (in sections) of the long board that is attached to the panel, as well as two photos showing where one ribbon connects to the panel and a pic of the panel's corner, showing that there really is nothing there to fiddle with.

If it is indeed a panel defect and I can perhaps do something about it and salvage a large portion of the display then I will...

Greetings,

I have a quick question for some of the more experienced techs out there.
(my background: I do component level work and am somewhat experienced with TV repairs)

"40 RCA RLDED4030A-B-RK LED LCD TV, about 2 years old, the set experiences distortion in the upper 1/3 of the screen, distortion is not static (at least not all of it),
It appears as what seems to be fast rolling reflections of what is displayed on the lower screen sections and also some light colored horizontal lines.
A thing to note, if a large portion or all of the...

Re: Hybrid IC IPM YPPD-J017C J018C repair

Just a quick update to my last post if anyone else is wondering about it or would need info in the future;
The repair of the YPPD-J016E module with FGD4536 IGBTs did NOT work from me (as stated above the module failed within 10 minutes),
After ordering a Chinese replacement YPPD-J016E and installing it, the set has worked for around 10 hours of testing including turning it on and off and let it cool down and warm up again multiple times, it has not failed since and the set now works perfectly and has a beautiful picture once...

Re: Hybrid IC IPM YPPD-J017C J018C repair

Sorry for resurrecting this old thread, but I am now too working on a "50 no-name Plasma set using LG innards (Legend brand TV model LEP5018, made in August 2006), with a bad YPPD-J016E module (the main YSUS board being 6870QYC004D).
The set has similar symptoms; whole screen flashing with a ticking noise from the module.

Upon desoldering and checking the module I found a shorted Q4, with Q2 testing OK. I've repaired the module using the FGD4536 IGBTs (replacing both Q2 & Q4), the diodes on the hybrid tested...