After one day of use, the TV has a blank white screen. No buttons are working at all at this point.
SOURCE: my coby tv has a
This is usually due to the tv's power supply shutting it down to prevent further damage. It does this when one of the other boards in the set is drawing more power than it should, indicating a faulty part on the board. This needs an experienced engineer to diagnose and repair it, and as this is a common fault with flat screens of all types, should not be too expensive, depending on the price and availability of spare parts.
SOURCE: Coby 32" Model TFTV3225 can
Just white glowing screen/ It can be bad T-CON (blown fuse) board or it is not getting the 5 or 12vdc from the main board. Check the caps in the power supply module also.
Please read my guides first:
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:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: www.interliquidparts.com
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.
SOURCE: No picture on coby tv
I'm not certain but it sounds like there is a loose video cable in there...if you are able to, take the tv apart, and literally push on all of the connectors and cables to make sure they are not loose. The main video cable may not seem to be loose, but once it is making contact again, it should clear that mess up. Just look for cables running to the main screen and pull them off and put them back. Then put the tv back together again and see if it worked...it usually does. why does this happen? Some blame it on dust, others blame it on quick manufacturing processes...whatever the case, the cables become slightly seperated from the controller board and that happens...it also happens to computer monitors too...Good luck and take your time. If there are a lot of screws and things either take pictures of where they all went or write it down. I like to make a diagram on a piece of paper and tape the screws on the diagram to show where they went.
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