LG 42PB4D 42 in. Plasma HDTV - Answered Questions & Fixed issues

main board problem need replaced

Most major manufacturers supply manuals and software updates online so if you were to log on to the manufacturer's web site, you may be pleasantly surprised as usually, if available, one is able to download, by model number, Customer Instruction Manuals, Dealer Network for spare part supplies and updates as required.

The information is normally free of charge.

I hope this helps.

You just need to replace the power supply board.Have it service by a TV technician to replace it for you Its a common issue for this types of TV. Thanks

If you were to log on to the lg.com web site, I think you will be pleasantly surprised as usually one is able to download, by model number, Customer Instruction Manuals, list of Dealers for spare part supplies and Driver downloads as required.

The information is normally free of charge.

I hope this helps.

Halo sir...
confirm tat only channel 73 & 90 has this problem and all the other channels are working . If so.... The problem seems to be with your cable operator not with the TV. Kindly contact your nearest cable operator to fix this kind of TV relay problem.
Thanks You

You will only be able to use the HDMI if you tv has an output for it(for other things beside built in DVD player of home theatre). It can not be an input. If you want everything that plays through your tv to then play through your home theatre the easiest way is to use white and red composite audio cables(some call them rca cables) More than likely you tv will have this output.They will go from the output of the tv to the input of home theater. If your home theater has a Blu-ray or DVD player you need to use the HDMI from home theatre out to in on the tv. If you tv happens to have and OUTPUT for fiber optic audio or digital coaxle audio on your tv and your home theatre has same but as inputs that will work as well with a better quality sound. However this is very rare.

Sorry to hijack your post, but I have the same model and the same problem. After searching the net a bit it appears to be an LG issue.......

get in ti the menu and turn off the TEXT option.

I think it may remote controllproblem.channel button or scan button were pressed. you open the remote and clean slighitly all buttons with cotton .
Thyanking you

for plasma tv's there is no picture tube, it has only electron gun .it will be cost more at the same time buying a new one.

Your screen may have either burnt out or became disconnected somehow. Sometimes, it's as simple as a connector coming loose from its port; other times, however, there's physical damage to the wires/connector/port. I'd contact the manufacturer to troubleshoot it as far as it can go on the phone. I assume that they'll either figure it out right there, or follow their protocols and (assuming it's covered in the warranty) have you send it to them for diagnostic steps. The other alternative is to simply call a professional.

www.jordansmanuals.com/ServiceManuals%5CLG%5CTV%5CPLASMA%5C42PB4D%5C42PB4D%2...
Use that to see if you can sort it... Otherwise get a "Quote" for a professional approved service center.

ysus board but best to replace zsus to

Just fixed this problem. Turn TV off and unplug from wall, leave for 5 mins turn back on and picture back!

bad panel call lg

There can be several causes for this, few of which you can do anything about. However, a few things to try:

1) Replace the batteries on your remote control.
2) Try resetting the logic functions on your tv by unplugging it for a minute, then plugging it back in.
3) Try covering up the infra-red receptor on the front of your TV to see if you're getting unwanted signals from the receptor. taping a piece of foil over that area is perfect. If it doesn't stop after doing these two things you'll probably need to take it to a shop.
4) If this does stop it, then look for unexpected signal sources. Have you added a remote control extender? Added a new device to your audio-video system? Changed to a new remote?

I hope this helps. Joe

On most universal remote control, you will find the procedure to enter the builder code OR a procedure to pass through all the codes of the remote, one by one and pass to the other TILL you find the right one. It happen to me numbers of time and i've always trick it this way! Good luck.

Try this:

In the menu go to CC and set the TV to CC1 as this is a text box appearing for captions. Hope this works!

It sounds like your tv is in text mode for the captions. Try going into the menu, and go into captions, and set it to off. That should solve the problem. If not, do U have a cable box? If U do, try the same approach with the cable box B4 concluding it's something wrong with the tv.

This worked for me too! THANKS