Question about Sylvania Televison & Video
Portable black & white TV 5.5 inch. How do I get a pircutre?
Posted by Anonymous on
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Posted on Jan 02, 2017
it is because the channel is being brodcast in hd and not just digital. it is an unfortutane side effect of the dtv convertion, all brodcast are now digital but not all are high def, if you had a high def tv and were watching and standard definition channel it would have thick black line on the left and right because the image does not fill the dislay
Posted on Aug 14, 2009
SOURCE: my Sylvania 6427TE 27" TV
Possible fault can be in the CRT base of the TV or the fault of the Chroma IC/ Crt Drive connecctor.
The CRT board is the picture tube rear conneccted to a printed circuit board. Normally there are many transistor drivers , three for the three seperrate guns and two for the purity correction.
There could be a fault if one of the transistors are off with a dry soldering as you are having an intermittent fault. So the best way out is to solder this board and check.
If the fault is staying then check the line going to the main board- the rribbon wire cluster. You will notice a large IC near to this wire connecction with a lot of passive ccomponents around it. Solder the IC and if you find a Crystal around this section solder the area around it. Put the sett on- But take presaution when set is on not to touch circuits- and tap gently on the board. If there is colour flicking look for dry solder joints and solder.Repeat this work with caution not to bridge any tracks.
Finally we can also suspect the picture tube. If a gentle tap is bringing the colour back it can be the tube, you can use a regenerative apparatus to remove short and maybe get the tube in good order.
But that will be the last thing as I suspect the fault can be the CRT base board.
Please check and comment.
Posted on Sep 01, 2010
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