LG 42PC3RA SMPS power_ysus problems on/off/on click and fixes

[Shipmaker]

Re: LG 42PC3RA SMPS power_ysus problems on/off/on click and fixes

First at all the bridge works since two hours

I read my service manuall and found nothing of firmware update.
Than go to LG Homepage and found only the manuall to downloud, than I walk to the television and look if there is an usb connection, but there is none!
So I think there is no way to update the firmware, but I found in germany a page who is discriping how to take of any pixelsnow with working on the Pottis(
Vsetup etc.)Here the Linkhttp://www.hifi-forum.de/viewthread-141-2177.html
My TV is the LG42PC1RV build in 2006.

Again Thanks!

[Alastair E]

Re: LG 42PC3RA SMPS power_ysus problems on/off/on click and fixes

No--Not done by USB or anything like that.

The Control-Board has a socket that you plug the special jig into attached to the PC and directly re-new the firmware.
You dont even need the set to do the job, just the control-board, the jig, computer and the software and firmware files.

Altering the pots will only give a partial cure I found.

[Alastair E]

Re: LG 42PC3RA SMPS power_ysus problems on/off/on click and fixes

Here you go--

http://www.slashdocs.com/mhqsvt/plas...-for-cd-1.html

[Shipmaker]

Re: LG 42PC3RA SMPS power_ysus problems on/off/on click and fixes

Thank you again!

yes now I understand the praxis, and you a right, because if i wanne make a upgrade it s better to do nothing with the pottis.
while my familie look tv I was searching for the panel number on the backside of the tv but maby i must opening the backside again to find it!

When I find the panel number I tell you and you can send me the upgrade!

Buy!

[Alastair E]

Re: LG 42PC3RA SMPS power_ysus problems on/off/on click and fixes

Doesn't quite work like that!

You would need to send me your Control-Board, I update it--and send back to you.....

Be too expensive to send my jig, my PC, the PSU for control-board and all the wiring/software to you to do it yourself!

---

Let me know the panel-number inside, and if you can get it--The Control-Board numbers, (small board under the metal chassis holding all the AV and Mainboard stuff) I have a spare control-board, maybe its the same type/version....

[Shipmaker]

Re: LG 42PC3RA SMPS power_ysus problems on/off/on click and fixes

Ok, I take the Backside of again and found this: PDP 42V80201
//DC 5,0 V //Va 60V // Vs 185 V max Watt 250.


Hope this helps to identify the Control Panel !

Nice, to hear from you!

[err500]

Re: LG 42PC3RA SMPS power_ysus problems on/off/on click and fixes

can someone post a pic of this solder bridge on disable AC detect optocouplers

my TV looks like this one https://www.badcaps.net/forum/attach...4&d=1396268836

[slappala]

Re: LG 42PC3RA SMPS power_ysus problems on/off/on click and fixes

Hi,
It's been a Long time from my last post, but I will let you know that the optocoupler mod has worked to this day , so about 6 years. TV is still working.

Today I got one black horizontal line in the middle of the tv screen and also I have some red dots on black backgrounds sometimes.

I think this tv is going to the recycling plant now. Tried to fiddle with the ribbon cables but no help for the black line.

Happy to hear the optocoupler mod has helped others too.