20 Most Recent LG 42PX5D 42 in. Plasma HDTV - Page 9 Questions & Answers


hi,

• Check the Power Board Output high tension circuit


On your Z Board :

• Check Fuse (FS1, FS2) on Z-B/D normal?

(In case of open is replace)


• If yes , Is the output voltage normal after remove

P1 connector of Z-B/D?


If yes,


• Replace Z-Board.





More details here : Service Manual

http://www.tradebit.com/filedetail.php/99919648-lg-42px5d-plasma-tv-service-manual-


only with a fee

LG 42PX5D 42 in.... | Answered on Aug 25, 2010


Hello.
It looks like poor signal level is causing main board to freeze.
First I would recommend to make sure that it does not create same issue while you are using different device as a source of signal. Try DVD-player. If same thing happens with DVD player - main board have to be replaced. And it could cost some pretty penny ( part itself around $200 and more).
If "freezing" happens only while watching cable - I would recommend get cable box (if you don't use one) and connect it to the TV avoiding RF (antenna) cable. Use composit (yellow, red, white), component (green, blue, red, white, red) or HDMI cable to connect your signal source to the TV. That will assure reliable connection and signal level won't be an issue anymore.
Best regards.
Russ.

LG 42PX5D 42 in.... | Answered on Aug 13, 2010


Hello.
Put your old board back - if TV will turn on and dark picture will still present - then you just have purchased defective board. If even old board won't bring picture back - probably Plasma Panel couldn't take it anymore and died.
regards.
Russ.

LG 42PX5D 42 in.... | Answered on Aug 12, 2010


its either bad caps on the PSB-power supply board or the Y-SUS main board is bad or a component has failed on it. Remove the YSUS and take it to a PC repair shop the does board level test and repair. It's more cost effective to rework the exisitting board than to buy a new one. Or you can buy a refurb online. I say PC repair as they are cheaper than your local TV repair person.

Best regards

LG 42PX5D 42 in.... | Answered on Aug 03, 2010


zsus board is the problem. need to replace board.

LG 42PX5D 42 in.... | Answered on Jul 30, 2010


Try connecting any other device to the TV and check to confirm whether the issue is with the TV. Then, try resetting the TV to the factory settings. If the issue persists, try Power resetting the TV and check. If the issue still persists, the TV may require service.

LG 42PX5D 42 in.... | Answered on Jul 26, 2010


Hi


Thanks for using FixYa. The issue seems to be with the Y-sus, Z-sus and the control boards should also be checked. To start with you’ll need to open the back of the unit and check these boards for any blown/swollen/flat capacitors. Y-sus board is located on the left looking from the back and Z-sus is the board that is on the right hand side and controller board is the one located next to the power supply board. Please do accept the solution if the issue is resolved or post a comment for further assistance.


Thanks
Rylee

LG 42PX5D 42 in.... | Answered on Jul 20, 2010


The power supply board is dead.That the board,where the power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

LG 42PX5D 42 in.... | Answered on Jul 14, 2010


First make sure to hit the menu button on the TV's remote and if nothing is there then friend while the set is on turn a bright flashlight on and shine at angle into the set push the TV menu button if you can see a image then your back light is not working.
You can also check the transformers they are close to were the wires plug into the panel, make sure all transformers read the same amount of resistance if not you have found a bad one. Now you will have to check to see if the power supply is sending 24v to the backlight, if not the power supply is bad. Cost backlights around 150.00 and power supplies around 100.00. Well this should help you friend.

LG 42PX5D 42 in.... | Answered on Jul 10, 2010


Search for the STAND ASSEMBLY AP-42DX40S. I've found several sources but they are pricy.
http://www.jpcparts.com/m/100/LG_ELECTRONICS.html
or
http://spares.bigwarehouse.com.au/product_info.php?cPath=24759_24788_25049&products_id=602196&osCsid=c2d1941a8fa106a551d13e43b19ed321

I hope this helps.
Cindy Wells

LG 42PX5D 42 in.... | Answered on Jul 09, 2010


Hi
A common problem for these is bad capacitors in the power supply, Remove the back from your TV and look at the power supply on the left hand side.

You will see roughly around 9 x capacitors that are bulged / domed shaped on top usually these are valued at 3300uf 10V any that have bulged or leaked a brown like substance should be changed.
This will cure the problem as they overheat being sat next to a heatsink that gets very hot!
Try and change them for the same 3300uf but a higher voltage.
Hope this helps

LG 42PX5D 42 in.... | Answered on Jul 09, 2010


That could be the Z board, but most likely the sustain and upper/lower buffer boards. The brightness is found in the Z board. Try to find a repair shop to repair on the component level because the cost of new boards out weighs the cost of replacement.

Best Regards,
Beach TV Repair

LG 42PX5D 42 in.... | Answered on Jul 04, 2010


NEW YSUS AND BUFFER BOARDS ARE NOW NEEDED THE YSUS IS THE BIG BOARD IN THERE VERY LEFT HAND SIDE ONCE BACK IS OFF BIG BOARD WITH 1 BIG HEATSINK,, THAT AND THE BUFFER BOARD PUSHES INTO THAT WITH TWO BLACK CONNECTION TO THE YSUS REMOVE BOTH BUFFER IS FIDDLEY,,NEED TO REMOVE 4 RIBBON CABLES ATTACHED TO THE SCREEN B4 HAND,,

6871QYH053B IS YSUS MODEL BUFFER U WILL ALSO FIND ON EBAY.

LG 42PX5D 42 in.... | Answered on Jun 26, 2010


YES YOUR YSUS PANNEL HAS JUST POPPED CHECK OUT EBAY FOR REPLACEMENT,,

6871QYH053B

IS THE MODEL BOARD U REQUIRE,,

THERE WAS A GUY ON EBAY 64.99 AND 12£ POSTAGE AS LONG AS YOU STILL HAVE SOUND AND NO PICTURE,, YOUR PSU SHOULD BE FINE,,

LG 42PX5D 42 in.... | Answered on Jun 26, 2010


its the buffer driver board the big long board that plugs into your tv,, i have one for sale if u need one,,30£..promo7uk2@hotmail.com

free+p+p

this will cause the lines on your tv after replacing the ysus it could well be that ysus mabe faulty still if u replace buffer and find u still have the lines 9/10 times when the ysus goes it normally takes out the buffer board on these worst cases the control board,, but im 98% shure its buffer board.. let me know on here if u find out.

LG 42PX5D 42 in.... | Answered on Jun 26, 2010


ysus board needs to be replaced..

check out ebay ,,, in search use this,,

6871QYH053B

good luck all best lee.

LG 42PX5D 42 in.... | Answered on Jun 26, 2010


this tv needs a new ysus board and maybe the ysus buffer board as well..

type in buffer board for your model of tv in ebay and ysus,, theres a guy there who does them 64.99 & 12 £ postage u muct send your old one in,,for repair / replacement,,

6871QYH053B this is the ysus model u need..

all the best lee..

LG 42PX5D 42 in.... | Answered on Jun 26, 2010


this is the ysus board u can replace for around 100£

easy if u have a screwdriver and patients,,
and make shure the tvs switched off for a day before u replace board ,,

replacement type this in on ebay..
6871QYH053B

theres one guy on there 64.99 and 12£ swop your old one for this,,

i tend to replace the hybrid chip myself ,, but this guy has loads no its not me,,i dont have the time,i own my own tv repair business, so, hope this helps.

LG 42PX5D 42 in.... | Answered on Jun 26, 2010


is this with the dvb freeview ,,, if so u require a update,, a engineer is needed or buy a replacement dvb board from ebay,,, hope this helps..

LG 42PX5D 42 in.... | Answered on Jun 26, 2010

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