Question about Televison & Video
TV Power Board number is K-PL-0A-1.I think its LED driver power output is not good. What mentioned on board is LED DC power output as 30-120V but what I got at Pin 1& 2 as 24V on LED + mentioned. Can you please suggest what's wrong in this power supply board?
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Posted on Jan 02, 2017
If the power supply outputs are good! Then I would say the back light inverter is bad! If the screen stays black and does not come on.
Posted on Feb 28, 2009
You will have to isolate the main board and Inverters.
Unplug the inverters and turn on the set.
If it "turns on" then try re-connecting each inverter seperately to see if only one is causing the problem.
Posted on Mar 07, 2009
Your main board is faulty. I've done several of these but haven't been able to figure out which component is actually bad these yet. I've simply had to replace the board itself, and it fixes it every time. One thing you can do to get your backlights to come on (and so you know I'm not Jive'n you) Is unplug the three wire bundle that spans from power supply to main board. This will usually make the backlights fire up. I even had one that after I left it that way for a minute (with the backlight on) it suddenly started working again! But this was short lived. :-(
One time I even tried recapping the entire main to see it that would fix it. It did not. I think it might be something to do with the small chip labeled SL37HA37. It's a 16 legged bastard near the 3-wire plug I told you to pull. It's that or possibly the bigger IC near it that has a heat sink on it. The ball grid array solder joints may be faulty. Just guesses, if any smart guys out there figure this one out, be sure to tell the rest of us please!
Thanks, Chris Boise LCD www.boiselcd.com
Posted on Apr 23, 2010
SOURCE: My TV has a 17pw26-1
No, the voltages are just fine. The fault must be either in the PMW itself or in the HT transformer - and the only way to fix that is to replace the entire inverter board.
Posted on Oct 19, 2010
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