Question about Flat Panel Televisions
I've had this plamsa for about 2 years now. It worked fine until a couple of months ago. I would be watching TV and it would just turn off by itself and the red light would blink 5 times and repeat.
The only way to get it working again is to turn it off at the power point and wait awhile. Sometimes it would work again for a few hours, other times it would just turn off as soon as I switch it on.
Does any one have the service manual or know what could be the issue?
are you using a PC to feed a signal or maybe a cable with an adapter?
I had the same issue when I used one of the rear HDMI ports to show a PC display. Apparently there is a software difference between the rear and side/front ports. Inputting the PC through the side HDMI port has solved the problem for me (so far!)
Posted on Apr 21, 2009
It seems that your unit has some sort of
PSU fault, or a problem that is shutting down the Power Supply Unit, PSU.
This happens so that no further damage, and possible fire will occur.
Remember there are leathl Voltages inside TV's, and generally these days don't contain any "User Servicable parts" like in the "Old" days, instead Board Replacment is all that is generally done.
You need to take the unit to a reputable service centre/man and ask for a firm "Quote" for the work to be done.
Posted on Jan 24, 2010
That's a fairly common indication that a component in the main power supply called an 'electrolytic capacitor' is fading away.
These are used as filters and in feedback paths in switched mode power supplies and one of the parts on which mfr.'s safe a nickel or two. If these parts are not rated for the type of service they perform (higher frequencies and ripple current) they chemically break down and lose value until they no longer can serve their purpose.
If you open the back of the set after allowing a number of hours (overnight is better) with the plug pulled, look for a smaller circuit board with larger than average parts. Some of these will be blocks (transformers and chokes) and it will have cylindrical 'cans' that are mounted 90 degrees to the board. Look for a part number which may be on a sticker. If you can find this, contact Panasonic service in your area and ask about repair or replacement cost of this board. If either causes a faint heart, check on the site below to see if they happen to have this board on hand, it may save some money:
Subassemblies are normally plugged in and won't require soldering to replace.
Posted on Mar 19, 2010
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