I've done some research and narrowed it down. My standby is on but no response when I hit the power. It has a ceramic fuse I think but I don't know how to check it. I have a tester, but I'm not sure what to test to see if my power board is bad or if its something else like the main board. The model number is 50PN6500-UA. SN 402RMUY1K062. Power Board PN EAY62812601
Check its AC line input cord first. If it is OK, check and replace the main power regulator board [SMPS]; inside the TV.
http://electronicshelponline.blogspot.com/
SOURCE: how do I test the y-sustain main board from a
Hi.
As such boards are cheap and fail quite easily (both the two sustain and
the buffers) Philips service manuals are more oriented at board
swapping then at proper testing. In this particular case the buffer boards fail very easily because of a bad soldering to IC. The short will regularly blow the main sustain board.
To start when a main sustain (e.g. Ysus) is fried the TV will go in protect mode with the led flashing in standby. One test is done disconnecting the Sus board (with power off) and restarting the TV. If TV does not go in protect, then the sustain board was good.
If there is no protection:
The first thing to check on a main sustain board is the fuse. If the fuse has blown the IC is probably fried.I believe fuse is F5004. Check for swollen capacitors that may have blown. Test the FET. That is the core of the board as it is the power amplifier.
Here the service manual:PHILIPS_SM_15540.pdf - Right Click "Save Target As"
Here a more useful service manual. Check and follow troubleshooting diagrams in manual.
Here some troubleshooting from users.
Note:if buffer board was shorted, then the main sustain board is usually faulty.
Regards.
Ginko
SOURCE: LG px950-ua plasma TV. How do I restore picture and sound?
Before spending more money on boards, measure the voltages that are there. If ok, it's not power supply.
Hi, checking user manual there's no soft reset option so maybe the main board is faulty too, usually when there's a damage by lighting in power supply this also reaches the main board since they aren't electrically isolated.
This issue is a
common, but hardly talked about from LG. Your tv is probably 1 or 2 months out
of warranty, and now you're hearing a series of clicks. After weeks of fighting
with LG to replace my tv, i decided to fix it myself. i'm proud to announce
that my 50PK540 is now working. want proof?
Take a look at the video i posted on youtube, then you will have a
better understand why your tv is clicking... I'm also selling the repair kit
for this power supply board on ebay now.
LG power supply Board model number EAY60968801. With anyone of these PCB
# EAX61392501/7, EAX61392501/10, EAX61392501/11, or EAX61392501/12 with the parts if this kit, I've also fis
several 50PK750 models, Some clients have send me their broken power supply
board, so I can do the repairs. Please Make sure that you've already gone
through the process of troubleshooting and testing your tv's power supply board
before making any purchases.. I recommend that you get a tv tech to check it
out, because every tv is different. Email at [email protected] if you have
any question.and watch the video:
http://www.viewbix.com/v/LG-Repair-KIT-now-available-on-Ebay/8ec4bea5-1d91-4d23-8180-7e5214e6c8f6
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