I'm a tv repairman. tv would not come on. I replaced the
main boar. tv comes on -picture is good- but people are
standing on their heads-writing up side down.How do I correct this problem?
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Go to service mode and there should be an option to flip the picture, not sure why this should happen when selecting reset as its more common when replacing the main board
Samsung say you should try the factory reset option.
If that doesn't work it could be a fault on the main board. Sometimes this happens when boards are replaced.
There is also a service mode that allows you to flip the main screen. You can find how to access that by searching YouTube with the words "Samsung TV picture upside down".
Try the other options first though.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.
Flip the TV over! Just kidding!! When you installed the main board was it identical to the old main board? If so, you might want to look at the old board and ensure there are no jumpers that needed to be set on the new board. Some companies make generic control boards for tvs but have different jumper settings for different models. The jumpers are just little black blocks that connect different pins to each other on top of the circuit board.
Check that the connectors are properly put on. In some models of TV sets the connectors are not keyed, and can be inserted in either direction. This would be obviously the connector that is carrying the image data to the screen.
If this is not a reversed connector, then it is most likely a firmware issue in the new replacement board. Make sure the replacement board is the exact one required for your model type.
I would suspect main board more than one you replaced--not likely to get help as Thompson is not known for that--possible firmware upgrade seems likely.
On every set I have seen with upside down/inverted or reversed screen etc it has been either a firmware issue or a main board.
As I told you, when the tv main chip detects a problem, it force the TV in protected mode, and activates an internal safety switch to
turn tv off. This is why TV goes off in ten seconds.
when this happens TV must be taken apart and inside component tested and eventually replaced.
The technician will test the inside of your TV starting from the power supply board.
If you want to do it yourself you will need experience in testing and precision soldering, otherwise call a repairman using the phone number listed in the user manual.
hi there, it is worth for fixing it, cheaper than replacing it. you have a vertical section problem. look for a quilified service personnel for it to fix. ty
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