Question about Panasonic Televison & Video
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Posted on Jan 02, 2017
SOURCE: 42 plasma panasonic
DUDEEE this exact same problem happened to me!!!! what happened was it was workin fine then it started turning on and off, then now it goes through these weird phases where i cant turn it off using remote or the power button. every button on the side of the tv and the remote doesnt work. so i have to unplug it to turn it off, what a messedup problem!!! im taking my LG 32LB9D to the tv shop tomorrow i hope to get it assest and possibly fix, ill tell u how to solve the problem if my tv is fixed. :)
Posted on Nov 02, 2008
Either a bad power supply or a bad processor board.
A Good Service Shop should know what the 10 blinks are indicating.
May be a repair cost between $200 and 400 dollars.
Be prepared -
A/V Media Guy
Posted on Nov 22, 2009
Perhaps an easy fix. Remove the back of the flat screen. There will be a main circuit board visible. There will be several capacitors, cylinders with a cross hatch on the silver top. Do any of them look like they have a dimple created by expansion of the internal capacitor material over heating? If you see an expanded top...that's probably your problem. Get your solder gun out and replace that capacitor. You can order a new one off of Amazon. If yours is a 10 volt capacitor, consider replacing it with a 16 volt unit. Generally the electronics companies under design the size of these units. When you replace the capacitor take note of the silver band on the unit and where its placed in the two socket holes....there is a positive and negative hole placement.
Posted on Jan 03, 2011
Please check these 3 boards for blown fuses, bad caps, blown/shorted components.
Power supply, Y-SUSTAIN, and Z-SUSTAIN board.
You should download any one of the PLASMA TV training manuals to learn how PLASMA TV works from the link below, it will help you to get more understanding.
First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there is some troubleshooting you will have to do to find out the causes of the problem you are having.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Basic LCD monitor and TV troubleshooting guide:
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find.
Please leave rating if it helps.
Posted on Jan 15, 2011
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